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Set proper EOL on SVG source files (#12971)....
Jean-Philippe Lang -
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1 require 'rexml/document'
1 require 'rexml/document'
2 require 'SVG/Graph/Graph'
2 require 'SVG/Graph/Graph'
3 require 'SVG/Graph/BarBase'
3 require 'SVG/Graph/BarBase'
4
4
5 module SVG
5 module SVG
6 module Graph
6 module Graph
7 # === Create presentation quality SVG bar graphs easily
7 # === Create presentation quality SVG bar graphs easily
8 #
8 #
9 # = Synopsis
9 # = Synopsis
10 #
10 #
11 # require 'SVG/Graph/Bar'
11 # require 'SVG/Graph/Bar'
12 #
12 #
13 # fields = %w(Jan Feb Mar);
13 # fields = %w(Jan Feb Mar);
14 # data_sales_02 = [12, 45, 21]
14 # data_sales_02 = [12, 45, 21]
15 #
15 #
16 # graph = SVG::Graph::Bar.new(
16 # graph = SVG::Graph::Bar.new(
17 # :height => 500,
17 # :height => 500,
18 # :width => 300,
18 # :width => 300,
19 # :fields => fields
19 # :fields => fields
20 # )
20 # )
21 #
21 #
22 # graph.add_data(
22 # graph.add_data(
23 # :data => data_sales_02,
23 # :data => data_sales_02,
24 # :title => 'Sales 2002'
24 # :title => 'Sales 2002'
25 # )
25 # )
26 #
26 #
27 # print "Content-type: image/svg+xml\r\n\r\n"
27 # print "Content-type: image/svg+xml\r\n\r\n"
28 # print graph.burn
28 # print graph.burn
29 #
29 #
30 # = Description
30 # = Description
31 #
31 #
32 # This object aims to allow you to easily create high quality
32 # This object aims to allow you to easily create high quality
33 # SVG[http://www.w3c.org/tr/svg bar graphs. You can either use the default
33 # SVG[http://www.w3c.org/tr/svg bar graphs. You can either use the default
34 # style sheet or supply your own. Either way there are many options which
34 # style sheet or supply your own. Either way there are many options which
35 # can be configured to give you control over how the graph is generated -
35 # can be configured to give you control over how the graph is generated -
36 # with or without a key, data elements at each point, title, subtitle etc.
36 # with or without a key, data elements at each point, title, subtitle etc.
37 #
37 #
38 # = Notes
38 # = Notes
39 #
39 #
40 # The default stylesheet handles upto 12 data sets, if you
40 # The default stylesheet handles upto 12 data sets, if you
41 # use more you must create your own stylesheet and add the
41 # use more you must create your own stylesheet and add the
42 # additional settings for the extra data sets. You will know
42 # additional settings for the extra data sets. You will know
43 # if you go over 12 data sets as they will have no style and
43 # if you go over 12 data sets as they will have no style and
44 # be in black.
44 # be in black.
45 #
45 #
46 # = Examples
46 # = Examples
47 #
47 #
48 # * http://germane-software.com/repositories/public/SVG/test/test.rb
48 # * http://germane-software.com/repositories/public/SVG/test/test.rb
49 #
49 #
50 # = See also
50 # = See also
51 #
51 #
52 # * SVG::Graph::Graph
52 # * SVG::Graph::Graph
53 # * SVG::Graph::BarHorizontal
53 # * SVG::Graph::BarHorizontal
54 # * SVG::Graph::Line
54 # * SVG::Graph::Line
55 # * SVG::Graph::Pie
55 # * SVG::Graph::Pie
56 # * SVG::Graph::Plot
56 # * SVG::Graph::Plot
57 # * SVG::Graph::TimeSeries
57 # * SVG::Graph::TimeSeries
58 class Bar < BarBase
58 class Bar < BarBase
59 include REXML
59 include REXML
60
60
61 # See Graph::initialize and BarBase::set_defaults
61 # See Graph::initialize and BarBase::set_defaults
62 def set_defaults
62 def set_defaults
63 super
63 super
64 self.top_align = self.top_font = 1
64 self.top_align = self.top_font = 1
65 end
65 end
66
66
67 protected
67 protected
68
68
69 def get_x_labels
69 def get_x_labels
70 @config[:fields]
70 @config[:fields]
71 end
71 end
72
72
73 def get_y_labels
73 def get_y_labels
74 maxvalue = max_value
74 maxvalue = max_value
75 minvalue = min_value
75 minvalue = min_value
76 range = maxvalue - minvalue
76 range = maxvalue - minvalue
77
77
78 top_pad = range == 0 ? 10 : range / 20.0
78 top_pad = range == 0 ? 10 : range / 20.0
79 scale_range = (maxvalue + top_pad) - minvalue
79 scale_range = (maxvalue + top_pad) - minvalue
80
80
81 scale_division = scale_divisions || (scale_range / 10.0)
81 scale_division = scale_divisions || (scale_range / 10.0)
82
82
83 if scale_integers
83 if scale_integers
84 scale_division = scale_division < 1 ? 1 : scale_division.round
84 scale_division = scale_division < 1 ? 1 : scale_division.round
85 end
85 end
86
86
87 rv = []
87 rv = []
88 maxvalue = maxvalue%scale_division == 0 ?
88 maxvalue = maxvalue%scale_division == 0 ?
89 maxvalue : maxvalue + scale_division
89 maxvalue : maxvalue + scale_division
90 minvalue.step( maxvalue, scale_division ) {|v| rv << v}
90 minvalue.step( maxvalue, scale_division ) {|v| rv << v}
91 return rv
91 return rv
92 end
92 end
93
93
94 def x_label_offset( width )
94 def x_label_offset( width )
95 width / 2.0
95 width / 2.0
96 end
96 end
97
97
98 def draw_data
98 def draw_data
99 minvalue = min_value
99 minvalue = min_value
100 fieldwidth = field_width
100 fieldwidth = field_width
101
101
102 unit_size = (@graph_height.to_f - font_size*2*top_font) /
102 unit_size = (@graph_height.to_f - font_size*2*top_font) /
103 (get_y_labels.max - get_y_labels.min)
103 (get_y_labels.max - get_y_labels.min)
104 bargap = bar_gap ? (fieldwidth < 10 ? fieldwidth / 2 : 10) : 0
104 bargap = bar_gap ? (fieldwidth < 10 ? fieldwidth / 2 : 10) : 0
105
105
106 bar_width = fieldwidth - bargap
106 bar_width = fieldwidth - bargap
107 bar_width /= @data.length if stack == :side
107 bar_width /= @data.length if stack == :side
108 x_mod = (@graph_width-bargap)/2 - (stack==:side ? bar_width/2 : 0)
108 x_mod = (@graph_width-bargap)/2 - (stack==:side ? bar_width/2 : 0)
109
109
110 bottom = @graph_height
110 bottom = @graph_height
111
111
112 field_count = 0
112 field_count = 0
113 @config[:fields].each_index { |i|
113 @config[:fields].each_index { |i|
114 dataset_count = 0
114 dataset_count = 0
115 for dataset in @data
115 for dataset in @data
116
116
117 # cases (assume 0 = +ve):
117 # cases (assume 0 = +ve):
118 # value min length
118 # value min length
119 # +ve +ve value - min
119 # +ve +ve value - min
120 # +ve -ve value - 0
120 # +ve -ve value - 0
121 # -ve -ve value.abs - 0
121 # -ve -ve value.abs - 0
122
122
123 value = dataset[:data][i]
123 value = dataset[:data][i]
124
124
125 left = (fieldwidth * field_count)
125 left = (fieldwidth * field_count)
126
126
127 length = (value.abs - (minvalue > 0 ? minvalue : 0)) * unit_size
127 length = (value.abs - (minvalue > 0 ? minvalue : 0)) * unit_size
128 # top is 0 if value is negative
128 # top is 0 if value is negative
129 top = bottom - (((value < 0 ? 0 : value) - minvalue) * unit_size)
129 top = bottom - (((value < 0 ? 0 : value) - minvalue) * unit_size)
130 left += bar_width * dataset_count if stack == :side
130 left += bar_width * dataset_count if stack == :side
131
131
132 @graph.add_element( "rect", {
132 @graph.add_element( "rect", {
133 "x" => left.to_s,
133 "x" => left.to_s,
134 "y" => top.to_s,
134 "y" => top.to_s,
135 "width" => bar_width.to_s,
135 "width" => bar_width.to_s,
136 "height" => length.to_s,
136 "height" => length.to_s,
137 "class" => "fill#{dataset_count+1}"
137 "class" => "fill#{dataset_count+1}"
138 })
138 })
139
139
140 make_datapoint_text(left + bar_width/2.0, top - 6, value.to_s)
140 make_datapoint_text(left + bar_width/2.0, top - 6, value.to_s)
141 dataset_count += 1
141 dataset_count += 1
142 end
142 end
143 field_count += 1
143 field_count += 1
144 }
144 }
145 end
145 end
146 end
146 end
147 end
147 end
148 end
148 end
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@@ -1,139 +1,139
1 require 'rexml/document'
1 require 'rexml/document'
2 require 'SVG/Graph/Graph'
2 require 'SVG/Graph/Graph'
3
3
4 module SVG
4 module SVG
5 module Graph
5 module Graph
6 # = Synopsis
6 # = Synopsis
7 #
7 #
8 # A superclass for bar-style graphs. Do not attempt to instantiate
8 # A superclass for bar-style graphs. Do not attempt to instantiate
9 # directly; use one of the subclasses instead.
9 # directly; use one of the subclasses instead.
10 #
10 #
11 # = Author
11 # = Author
12 #
12 #
13 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
13 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
14 #
14 #
15 # Copyright 2004 Sean E. Russell
15 # Copyright 2004 Sean E. Russell
16 # This software is available under the Ruby license[LICENSE.txt]
16 # This software is available under the Ruby license[LICENSE.txt]
17 #
17 #
18 class BarBase < SVG::Graph::Graph
18 class BarBase < SVG::Graph::Graph
19 # Ensures that :fields are provided in the configuration.
19 # Ensures that :fields are provided in the configuration.
20 def initialize config
20 def initialize config
21 raise "fields was not supplied or is empty" unless config[:fields] &&
21 raise "fields was not supplied or is empty" unless config[:fields] &&
22 config[:fields].kind_of?(Array) &&
22 config[:fields].kind_of?(Array) &&
23 config[:fields].length > 0
23 config[:fields].length > 0
24 super
24 super
25 end
25 end
26
26
27 # In addition to the defaults set in Graph::initialize, sets
27 # In addition to the defaults set in Graph::initialize, sets
28 # [bar_gap] true
28 # [bar_gap] true
29 # [stack] :overlap
29 # [stack] :overlap
30 def set_defaults
30 def set_defaults
31 init_with( :bar_gap => true, :stack => :overlap )
31 init_with( :bar_gap => true, :stack => :overlap )
32 end
32 end
33
33
34 # Whether to have a gap between the bars or not, default
34 # Whether to have a gap between the bars or not, default
35 # is true, set to false if you don't want gaps.
35 # is true, set to false if you don't want gaps.
36 attr_accessor :bar_gap
36 attr_accessor :bar_gap
37 # How to stack data sets. :overlap overlaps bars with
37 # How to stack data sets. :overlap overlaps bars with
38 # transparent colors, :top stacks bars on top of one another,
38 # transparent colors, :top stacks bars on top of one another,
39 # :side stacks the bars side-by-side. Defaults to :overlap.
39 # :side stacks the bars side-by-side. Defaults to :overlap.
40 attr_accessor :stack
40 attr_accessor :stack
41
41
42
42
43 protected
43 protected
44
44
45 def max_value
45 def max_value
46 @data.collect{|x| x[:data].max}.max
46 @data.collect{|x| x[:data].max}.max
47 end
47 end
48
48
49 def min_value
49 def min_value
50 min = 0
50 min = 0
51 if min_scale_value.nil?
51 if min_scale_value.nil?
52 min = @data.collect{|x| x[:data].min}.min
52 min = @data.collect{|x| x[:data].min}.min
53 min = min > 0 ? 0 : min
53 min = min > 0 ? 0 : min
54 else
54 else
55 min = min_scale_value
55 min = min_scale_value
56 end
56 end
57 return min
57 return min
58 end
58 end
59
59
60 def get_css
60 def get_css
61 return <<EOL
61 return <<EOL
62 /* default fill styles for multiple datasets (probably only use a single dataset on this graph though) */
62 /* default fill styles for multiple datasets (probably only use a single dataset on this graph though) */
63 .key1,.fill1{
63 .key1,.fill1{
64 fill: #ff0000;
64 fill: #ff0000;
65 fill-opacity: 0.5;
65 fill-opacity: 0.5;
66 stroke: none;
66 stroke: none;
67 stroke-width: 0.5px;
67 stroke-width: 0.5px;
68 }
68 }
69 .key2,.fill2{
69 .key2,.fill2{
70 fill: #0000ff;
70 fill: #0000ff;
71 fill-opacity: 0.5;
71 fill-opacity: 0.5;
72 stroke: none;
72 stroke: none;
73 stroke-width: 1px;
73 stroke-width: 1px;
74 }
74 }
75 .key3,.fill3{
75 .key3,.fill3{
76 fill: #00ff00;
76 fill: #00ff00;
77 fill-opacity: 0.5;
77 fill-opacity: 0.5;
78 stroke: none;
78 stroke: none;
79 stroke-width: 1px;
79 stroke-width: 1px;
80 }
80 }
81 .key4,.fill4{
81 .key4,.fill4{
82 fill: #ffcc00;
82 fill: #ffcc00;
83 fill-opacity: 0.5;
83 fill-opacity: 0.5;
84 stroke: none;
84 stroke: none;
85 stroke-width: 1px;
85 stroke-width: 1px;
86 }
86 }
87 .key5,.fill5{
87 .key5,.fill5{
88 fill: #00ccff;
88 fill: #00ccff;
89 fill-opacity: 0.5;
89 fill-opacity: 0.5;
90 stroke: none;
90 stroke: none;
91 stroke-width: 1px;
91 stroke-width: 1px;
92 }
92 }
93 .key6,.fill6{
93 .key6,.fill6{
94 fill: #ff00ff;
94 fill: #ff00ff;
95 fill-opacity: 0.5;
95 fill-opacity: 0.5;
96 stroke: none;
96 stroke: none;
97 stroke-width: 1px;
97 stroke-width: 1px;
98 }
98 }
99 .key7,.fill7{
99 .key7,.fill7{
100 fill: #00ffff;
100 fill: #00ffff;
101 fill-opacity: 0.5;
101 fill-opacity: 0.5;
102 stroke: none;
102 stroke: none;
103 stroke-width: 1px;
103 stroke-width: 1px;
104 }
104 }
105 .key8,.fill8{
105 .key8,.fill8{
106 fill: #ffff00;
106 fill: #ffff00;
107 fill-opacity: 0.5;
107 fill-opacity: 0.5;
108 stroke: none;
108 stroke: none;
109 stroke-width: 1px;
109 stroke-width: 1px;
110 }
110 }
111 .key9,.fill9{
111 .key9,.fill9{
112 fill: #cc6666;
112 fill: #cc6666;
113 fill-opacity: 0.5;
113 fill-opacity: 0.5;
114 stroke: none;
114 stroke: none;
115 stroke-width: 1px;
115 stroke-width: 1px;
116 }
116 }
117 .key10,.fill10{
117 .key10,.fill10{
118 fill: #663399;
118 fill: #663399;
119 fill-opacity: 0.5;
119 fill-opacity: 0.5;
120 stroke: none;
120 stroke: none;
121 stroke-width: 1px;
121 stroke-width: 1px;
122 }
122 }
123 .key11,.fill11{
123 .key11,.fill11{
124 fill: #339900;
124 fill: #339900;
125 fill-opacity: 0.5;
125 fill-opacity: 0.5;
126 stroke: none;
126 stroke: none;
127 stroke-width: 1px;
127 stroke-width: 1px;
128 }
128 }
129 .key12,.fill12{
129 .key12,.fill12{
130 fill: #9966FF;
130 fill: #9966FF;
131 fill-opacity: 0.5;
131 fill-opacity: 0.5;
132 stroke: none;
132 stroke: none;
133 stroke-width: 1px;
133 stroke-width: 1px;
134 }
134 }
135 EOL
135 EOL
136 end
136 end
137 end
137 end
138 end
138 end
139 end
139 end
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@@ -1,149 +1,149
1 require 'rexml/document'
1 require 'rexml/document'
2 require 'SVG/Graph/BarBase'
2 require 'SVG/Graph/BarBase'
3
3
4 module SVG
4 module SVG
5 module Graph
5 module Graph
6 # === Create presentation quality SVG horitonzal bar graphs easily
6 # === Create presentation quality SVG horitonzal bar graphs easily
7 #
7 #
8 # = Synopsis
8 # = Synopsis
9 #
9 #
10 # require 'SVG/Graph/BarHorizontal'
10 # require 'SVG/Graph/BarHorizontal'
11 #
11 #
12 # fields = %w(Jan Feb Mar)
12 # fields = %w(Jan Feb Mar)
13 # data_sales_02 = [12, 45, 21]
13 # data_sales_02 = [12, 45, 21]
14 #
14 #
15 # graph = SVG::Graph::BarHorizontal.new({
15 # graph = SVG::Graph::BarHorizontal.new({
16 # :height => 500,
16 # :height => 500,
17 # :width => 300,
17 # :width => 300,
18 # :fields => fields,
18 # :fields => fields,
19 # })
19 # })
20 #
20 #
21 # graph.add_data({
21 # graph.add_data({
22 # :data => data_sales_02,
22 # :data => data_sales_02,
23 # :title => 'Sales 2002',
23 # :title => 'Sales 2002',
24 # })
24 # })
25 #
25 #
26 # print "Content-type: image/svg+xml\r\n\r\n"
26 # print "Content-type: image/svg+xml\r\n\r\n"
27 # print graph.burn
27 # print graph.burn
28 #
28 #
29 # = Description
29 # = Description
30 #
30 #
31 # This object aims to allow you to easily create high quality
31 # This object aims to allow you to easily create high quality
32 # SVG horitonzal bar graphs. You can either use the default style sheet
32 # SVG horitonzal bar graphs. You can either use the default style sheet
33 # or supply your own. Either way there are many options which can
33 # or supply your own. Either way there are many options which can
34 # be configured to give you control over how the graph is
34 # be configured to give you control over how the graph is
35 # generated - with or without a key, data elements at each point,
35 # generated - with or without a key, data elements at each point,
36 # title, subtitle etc.
36 # title, subtitle etc.
37 #
37 #
38 # = Examples
38 # = Examples
39 #
39 #
40 # * http://germane-software.com/repositories/public/SVG/test/test.rb
40 # * http://germane-software.com/repositories/public/SVG/test/test.rb
41 #
41 #
42 # = See also
42 # = See also
43 #
43 #
44 # * SVG::Graph::Graph
44 # * SVG::Graph::Graph
45 # * SVG::Graph::Bar
45 # * SVG::Graph::Bar
46 # * SVG::Graph::Line
46 # * SVG::Graph::Line
47 # * SVG::Graph::Pie
47 # * SVG::Graph::Pie
48 # * SVG::Graph::Plot
48 # * SVG::Graph::Plot
49 # * SVG::Graph::TimeSeries
49 # * SVG::Graph::TimeSeries
50 #
50 #
51 # == Author
51 # == Author
52 #
52 #
53 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
53 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
54 #
54 #
55 # Copyright 2004 Sean E. Russell
55 # Copyright 2004 Sean E. Russell
56 # This software is available under the Ruby license[LICENSE.txt]
56 # This software is available under the Ruby license[LICENSE.txt]
57 #
57 #
58 class BarHorizontal < BarBase
58 class BarHorizontal < BarBase
59 # In addition to the defaults set in BarBase::set_defaults, sets
59 # In addition to the defaults set in BarBase::set_defaults, sets
60 # [rotate_y_labels] true
60 # [rotate_y_labels] true
61 # [show_x_guidelines] true
61 # [show_x_guidelines] true
62 # [show_y_guidelines] false
62 # [show_y_guidelines] false
63 def set_defaults
63 def set_defaults
64 super
64 super
65 init_with(
65 init_with(
66 :rotate_y_labels => true,
66 :rotate_y_labels => true,
67 :show_x_guidelines => true,
67 :show_x_guidelines => true,
68 :show_y_guidelines => false
68 :show_y_guidelines => false
69 )
69 )
70 self.right_align = self.right_font = 1
70 self.right_align = self.right_font = 1
71 end
71 end
72
72
73 protected
73 protected
74
74
75 def get_x_labels
75 def get_x_labels
76 maxvalue = max_value
76 maxvalue = max_value
77 minvalue = min_value
77 minvalue = min_value
78 range = maxvalue - minvalue
78 range = maxvalue - minvalue
79 top_pad = range == 0 ? 10 : range / 20.0
79 top_pad = range == 0 ? 10 : range / 20.0
80 scale_range = (maxvalue + top_pad) - minvalue
80 scale_range = (maxvalue + top_pad) - minvalue
81
81
82 scale_division = scale_divisions || (scale_range / 10.0)
82 scale_division = scale_divisions || (scale_range / 10.0)
83
83
84 if scale_integers
84 if scale_integers
85 scale_division = scale_division < 1 ? 1 : scale_division.round
85 scale_division = scale_division < 1 ? 1 : scale_division.round
86 end
86 end
87
87
88 rv = []
88 rv = []
89 maxvalue = maxvalue%scale_division == 0 ?
89 maxvalue = maxvalue%scale_division == 0 ?
90 maxvalue : maxvalue + scale_division
90 maxvalue : maxvalue + scale_division
91 minvalue.step( maxvalue, scale_division ) {|v| rv << v}
91 minvalue.step( maxvalue, scale_division ) {|v| rv << v}
92 return rv
92 return rv
93 end
93 end
94
94
95 def get_y_labels
95 def get_y_labels
96 @config[:fields]
96 @config[:fields]
97 end
97 end
98
98
99 def y_label_offset( height )
99 def y_label_offset( height )
100 height / -2.0
100 height / -2.0
101 end
101 end
102
102
103 def draw_data
103 def draw_data
104 minvalue = min_value
104 minvalue = min_value
105 fieldheight = field_height
105 fieldheight = field_height
106
106
107 unit_size = (@graph_width.to_f - font_size*2*right_font ) /
107 unit_size = (@graph_width.to_f - font_size*2*right_font ) /
108 (get_x_labels.max - get_x_labels.min )
108 (get_x_labels.max - get_x_labels.min )
109 bargap = bar_gap ? (fieldheight < 10 ? fieldheight / 2 : 10) : 0
109 bargap = bar_gap ? (fieldheight < 10 ? fieldheight / 2 : 10) : 0
110
110
111 bar_height = fieldheight - bargap
111 bar_height = fieldheight - bargap
112 bar_height /= @data.length if stack == :side
112 bar_height /= @data.length if stack == :side
113 y_mod = (bar_height / 2) + (font_size / 2)
113 y_mod = (bar_height / 2) + (font_size / 2)
114
114
115 field_count = 1
115 field_count = 1
116 @config[:fields].each_index { |i|
116 @config[:fields].each_index { |i|
117 dataset_count = 0
117 dataset_count = 0
118 for dataset in @data
118 for dataset in @data
119 value = dataset[:data][i]
119 value = dataset[:data][i]
120
120
121 top = @graph_height - (fieldheight * field_count)
121 top = @graph_height - (fieldheight * field_count)
122 top += (bar_height * dataset_count) if stack == :side
122 top += (bar_height * dataset_count) if stack == :side
123 # cases (assume 0 = +ve):
123 # cases (assume 0 = +ve):
124 # value min length left
124 # value min length left
125 # +ve +ve value.abs - min minvalue.abs
125 # +ve +ve value.abs - min minvalue.abs
126 # +ve -ve value.abs - 0 minvalue.abs
126 # +ve -ve value.abs - 0 minvalue.abs
127 # -ve -ve value.abs - 0 minvalue.abs + value
127 # -ve -ve value.abs - 0 minvalue.abs + value
128 length = (value.abs - (minvalue > 0 ? minvalue : 0)) * unit_size
128 length = (value.abs - (minvalue > 0 ? minvalue : 0)) * unit_size
129 left = (minvalue.abs + (value < 0 ? value : 0)) * unit_size
129 left = (minvalue.abs + (value < 0 ? value : 0)) * unit_size
130
130
131 @graph.add_element( "rect", {
131 @graph.add_element( "rect", {
132 "x" => left.to_s,
132 "x" => left.to_s,
133 "y" => top.to_s,
133 "y" => top.to_s,
134 "width" => length.to_s,
134 "width" => length.to_s,
135 "height" => bar_height.to_s,
135 "height" => bar_height.to_s,
136 "class" => "fill#{dataset_count+1}"
136 "class" => "fill#{dataset_count+1}"
137 })
137 })
138
138
139 make_datapoint_text(
139 make_datapoint_text(
140 left+length+5, top+y_mod, value, "text-anchor: start; "
140 left+length+5, top+y_mod, value, "text-anchor: start; "
141 )
141 )
142 dataset_count += 1
142 dataset_count += 1
143 end
143 end
144 field_count += 1
144 field_count += 1
145 }
145 }
146 end
146 end
147 end
147 end
148 end
148 end
149 end
149 end
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@@ -1,978 +1,978
1 begin
1 begin
2 require 'zlib'
2 require 'zlib'
3 @@__have_zlib = true
3 @@__have_zlib = true
4 rescue
4 rescue
5 @@__have_zlib = false
5 @@__have_zlib = false
6 end
6 end
7
7
8 require 'rexml/document'
8 require 'rexml/document'
9
9
10 module SVG
10 module SVG
11 module Graph
11 module Graph
12 VERSION = '@ANT_VERSION@'
12 VERSION = '@ANT_VERSION@'
13
13
14 # === Base object for generating SVG Graphs
14 # === Base object for generating SVG Graphs
15 #
15 #
16 # == Synopsis
16 # == Synopsis
17 #
17 #
18 # This class is only used as a superclass of specialized charts. Do not
18 # This class is only used as a superclass of specialized charts. Do not
19 # attempt to use this class directly, unless creating a new chart type.
19 # attempt to use this class directly, unless creating a new chart type.
20 #
20 #
21 # For examples of how to subclass this class, see the existing specific
21 # For examples of how to subclass this class, see the existing specific
22 # subclasses, such as SVG::Graph::Pie.
22 # subclasses, such as SVG::Graph::Pie.
23 #
23 #
24 # == Examples
24 # == Examples
25 #
25 #
26 # For examples of how to use this package, see either the test files, or
26 # For examples of how to use this package, see either the test files, or
27 # the documentation for the specific class you want to use.
27 # the documentation for the specific class you want to use.
28 #
28 #
29 # * file:test/plot.rb
29 # * file:test/plot.rb
30 # * file:test/single.rb
30 # * file:test/single.rb
31 # * file:test/test.rb
31 # * file:test/test.rb
32 # * file:test/timeseries.rb
32 # * file:test/timeseries.rb
33 #
33 #
34 # == Description
34 # == Description
35 #
35 #
36 # This package should be used as a base for creating SVG graphs.
36 # This package should be used as a base for creating SVG graphs.
37 #
37 #
38 # == Acknowledgements
38 # == Acknowledgements
39 #
39 #
40 # Leo Lapworth for creating the SVG::TT::Graph package which this Ruby
40 # Leo Lapworth for creating the SVG::TT::Graph package which this Ruby
41 # port is based on.
41 # port is based on.
42 #
42 #
43 # Stephen Morgan for creating the TT template and SVG.
43 # Stephen Morgan for creating the TT template and SVG.
44 #
44 #
45 # == See
45 # == See
46 #
46 #
47 # * SVG::Graph::BarHorizontal
47 # * SVG::Graph::BarHorizontal
48 # * SVG::Graph::Bar
48 # * SVG::Graph::Bar
49 # * SVG::Graph::Line
49 # * SVG::Graph::Line
50 # * SVG::Graph::Pie
50 # * SVG::Graph::Pie
51 # * SVG::Graph::Plot
51 # * SVG::Graph::Plot
52 # * SVG::Graph::TimeSeries
52 # * SVG::Graph::TimeSeries
53 #
53 #
54 # == Author
54 # == Author
55 #
55 #
56 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
56 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
57 #
57 #
58 # Copyright 2004 Sean E. Russell
58 # Copyright 2004 Sean E. Russell
59 # This software is available under the Ruby license[LICENSE.txt]
59 # This software is available under the Ruby license[LICENSE.txt]
60 #
60 #
61 class Graph
61 class Graph
62 include REXML
62 include REXML
63
63
64 # Initialize the graph object with the graph settings. You won't
64 # Initialize the graph object with the graph settings. You won't
65 # instantiate this class directly; see the subclass for options.
65 # instantiate this class directly; see the subclass for options.
66 # [width] 500
66 # [width] 500
67 # [height] 300
67 # [height] 300
68 # [show_x_guidelines] false
68 # [show_x_guidelines] false
69 # [show_y_guidelines] true
69 # [show_y_guidelines] true
70 # [show_data_values] true
70 # [show_data_values] true
71 # [min_scale_value] 0
71 # [min_scale_value] 0
72 # [show_x_labels] true
72 # [show_x_labels] true
73 # [stagger_x_labels] false
73 # [stagger_x_labels] false
74 # [rotate_x_labels] false
74 # [rotate_x_labels] false
75 # [step_x_labels] 1
75 # [step_x_labels] 1
76 # [step_include_first_x_label] true
76 # [step_include_first_x_label] true
77 # [show_y_labels] true
77 # [show_y_labels] true
78 # [rotate_y_labels] false
78 # [rotate_y_labels] false
79 # [scale_integers] false
79 # [scale_integers] false
80 # [show_x_title] false
80 # [show_x_title] false
81 # [x_title] 'X Field names'
81 # [x_title] 'X Field names'
82 # [show_y_title] false
82 # [show_y_title] false
83 # [y_title_text_direction] :bt
83 # [y_title_text_direction] :bt
84 # [y_title] 'Y Scale'
84 # [y_title] 'Y Scale'
85 # [show_graph_title] false
85 # [show_graph_title] false
86 # [graph_title] 'Graph Title'
86 # [graph_title] 'Graph Title'
87 # [show_graph_subtitle] false
87 # [show_graph_subtitle] false
88 # [graph_subtitle] 'Graph Sub Title'
88 # [graph_subtitle] 'Graph Sub Title'
89 # [key] true,
89 # [key] true,
90 # [key_position] :right, # bottom or righ
90 # [key_position] :right, # bottom or righ
91 # [font_size] 12
91 # [font_size] 12
92 # [title_font_size] 16
92 # [title_font_size] 16
93 # [subtitle_font_size] 14
93 # [subtitle_font_size] 14
94 # [x_label_font_size] 12
94 # [x_label_font_size] 12
95 # [x_title_font_size] 14
95 # [x_title_font_size] 14
96 # [y_label_font_size] 12
96 # [y_label_font_size] 12
97 # [y_title_font_size] 14
97 # [y_title_font_size] 14
98 # [key_font_size] 10
98 # [key_font_size] 10
99 # [no_css] false
99 # [no_css] false
100 # [add_popups] false
100 # [add_popups] false
101 def initialize( config )
101 def initialize( config )
102 @config = config
102 @config = config
103
103
104 self.top_align = self.top_font = self.right_align = self.right_font = 0
104 self.top_align = self.top_font = self.right_align = self.right_font = 0
105
105
106 init_with({
106 init_with({
107 :width => 500,
107 :width => 500,
108 :height => 300,
108 :height => 300,
109 :show_x_guidelines => false,
109 :show_x_guidelines => false,
110 :show_y_guidelines => true,
110 :show_y_guidelines => true,
111 :show_data_values => true,
111 :show_data_values => true,
112
112
113 # :min_scale_value => 0,
113 # :min_scale_value => 0,
114
114
115 :show_x_labels => true,
115 :show_x_labels => true,
116 :stagger_x_labels => false,
116 :stagger_x_labels => false,
117 :rotate_x_labels => false,
117 :rotate_x_labels => false,
118 :step_x_labels => 1,
118 :step_x_labels => 1,
119 :step_include_first_x_label => true,
119 :step_include_first_x_label => true,
120
120
121 :show_y_labels => true,
121 :show_y_labels => true,
122 :rotate_y_labels => false,
122 :rotate_y_labels => false,
123 :stagger_y_labels => false,
123 :stagger_y_labels => false,
124 :scale_integers => false,
124 :scale_integers => false,
125
125
126 :show_x_title => false,
126 :show_x_title => false,
127 :x_title => 'X Field names',
127 :x_title => 'X Field names',
128
128
129 :show_y_title => false,
129 :show_y_title => false,
130 :y_title_text_direction => :bt,
130 :y_title_text_direction => :bt,
131 :y_title => 'Y Scale',
131 :y_title => 'Y Scale',
132
132
133 :show_graph_title => false,
133 :show_graph_title => false,
134 :graph_title => 'Graph Title',
134 :graph_title => 'Graph Title',
135 :show_graph_subtitle => false,
135 :show_graph_subtitle => false,
136 :graph_subtitle => 'Graph Sub Title',
136 :graph_subtitle => 'Graph Sub Title',
137 :key => true,
137 :key => true,
138 :key_position => :right, # bottom or right
138 :key_position => :right, # bottom or right
139
139
140 :font_size =>12,
140 :font_size =>12,
141 :title_font_size =>16,
141 :title_font_size =>16,
142 :subtitle_font_size =>14,
142 :subtitle_font_size =>14,
143 :x_label_font_size =>12,
143 :x_label_font_size =>12,
144 :x_title_font_size =>14,
144 :x_title_font_size =>14,
145 :y_label_font_size =>12,
145 :y_label_font_size =>12,
146 :y_title_font_size =>14,
146 :y_title_font_size =>14,
147 :key_font_size =>10,
147 :key_font_size =>10,
148
148
149 :no_css =>false,
149 :no_css =>false,
150 :add_popups =>false,
150 :add_popups =>false,
151 })
151 })
152
152
153 set_defaults if respond_to? :set_defaults
153 set_defaults if respond_to? :set_defaults
154
154
155 init_with config
155 init_with config
156 end
156 end
157
157
158
158
159 # This method allows you do add data to the graph object.
159 # This method allows you do add data to the graph object.
160 # It can be called several times to add more data sets in.
160 # It can be called several times to add more data sets in.
161 #
161 #
162 # data_sales_02 = [12, 45, 21];
162 # data_sales_02 = [12, 45, 21];
163 #
163 #
164 # graph.add_data({
164 # graph.add_data({
165 # :data => data_sales_02,
165 # :data => data_sales_02,
166 # :title => 'Sales 2002'
166 # :title => 'Sales 2002'
167 # })
167 # })
168 def add_data conf
168 def add_data conf
169 @data = [] unless defined? @data
169 @data = [] unless defined? @data
170
170
171 if conf[:data] and conf[:data].kind_of? Array
171 if conf[:data] and conf[:data].kind_of? Array
172 @data << conf
172 @data << conf
173 else
173 else
174 raise "No data provided by #{conf.inspect}"
174 raise "No data provided by #{conf.inspect}"
175 end
175 end
176 end
176 end
177
177
178
178
179 # This method removes all data from the object so that you can
179 # This method removes all data from the object so that you can
180 # reuse it to create a new graph but with the same config options.
180 # reuse it to create a new graph but with the same config options.
181 #
181 #
182 # graph.clear_data
182 # graph.clear_data
183 def clear_data
183 def clear_data
184 @data = []
184 @data = []
185 end
185 end
186
186
187
187
188 # This method processes the template with the data and
188 # This method processes the template with the data and
189 # config which has been set and returns the resulting SVG.
189 # config which has been set and returns the resulting SVG.
190 #
190 #
191 # This method will croak unless at least one data set has
191 # This method will croak unless at least one data set has
192 # been added to the graph object.
192 # been added to the graph object.
193 #
193 #
194 # print graph.burn
194 # print graph.burn
195 def burn
195 def burn
196 raise "No data available" unless @data.size > 0
196 raise "No data available" unless @data.size > 0
197
197
198 calculations if respond_to? :calculations
198 calculations if respond_to? :calculations
199
199
200 start_svg
200 start_svg
201 calculate_graph_dimensions
201 calculate_graph_dimensions
202 @foreground = Element.new( "g" )
202 @foreground = Element.new( "g" )
203 draw_graph
203 draw_graph
204 draw_titles
204 draw_titles
205 draw_legend
205 draw_legend
206 draw_data
206 draw_data
207 @graph.add_element( @foreground )
207 @graph.add_element( @foreground )
208 style
208 style
209
209
210 data = ""
210 data = ""
211 @doc.write( data, 0 )
211 @doc.write( data, 0 )
212
212
213 if @config[:compress]
213 if @config[:compress]
214 if @@__have_zlib
214 if @@__have_zlib
215 inp, out = IO.pipe
215 inp, out = IO.pipe
216 gz = Zlib::GzipWriter.new( out )
216 gz = Zlib::GzipWriter.new( out )
217 gz.write data
217 gz.write data
218 gz.close
218 gz.close
219 data = inp.read
219 data = inp.read
220 else
220 else
221 data << "<!-- Ruby Zlib not available for SVGZ -->";
221 data << "<!-- Ruby Zlib not available for SVGZ -->";
222 end
222 end
223 end
223 end
224
224
225 return data
225 return data
226 end
226 end
227
227
228
228
229 # Set the height of the graph box, this is the total height
229 # Set the height of the graph box, this is the total height
230 # of the SVG box created - not the graph it self which auto
230 # of the SVG box created - not the graph it self which auto
231 # scales to fix the space.
231 # scales to fix the space.
232 attr_accessor :height
232 attr_accessor :height
233 # Set the width of the graph box, this is the total width
233 # Set the width of the graph box, this is the total width
234 # of the SVG box created - not the graph it self which auto
234 # of the SVG box created - not the graph it self which auto
235 # scales to fix the space.
235 # scales to fix the space.
236 attr_accessor :width
236 attr_accessor :width
237 # Set the path to an external stylesheet, set to '' if
237 # Set the path to an external stylesheet, set to '' if
238 # you want to revert back to using the defaut internal version.
238 # you want to revert back to using the defaut internal version.
239 #
239 #
240 # To create an external stylesheet create a graph using the
240 # To create an external stylesheet create a graph using the
241 # default internal version and copy the stylesheet section to
241 # default internal version and copy the stylesheet section to
242 # an external file and edit from there.
242 # an external file and edit from there.
243 attr_accessor :style_sheet
243 attr_accessor :style_sheet
244 # (Bool) Show the value of each element of data on the graph
244 # (Bool) Show the value of each element of data on the graph
245 attr_accessor :show_data_values
245 attr_accessor :show_data_values
246 # The point at which the Y axis starts, defaults to '0',
246 # The point at which the Y axis starts, defaults to '0',
247 # if set to nil it will default to the minimum data value.
247 # if set to nil it will default to the minimum data value.
248 attr_accessor :min_scale_value
248 attr_accessor :min_scale_value
249 # Whether to show labels on the X axis or not, defaults
249 # Whether to show labels on the X axis or not, defaults
250 # to true, set to false if you want to turn them off.
250 # to true, set to false if you want to turn them off.
251 attr_accessor :show_x_labels
251 attr_accessor :show_x_labels
252 # This puts the X labels at alternative levels so if they
252 # This puts the X labels at alternative levels so if they
253 # are long field names they will not overlap so easily.
253 # are long field names they will not overlap so easily.
254 # Default it false, to turn on set to true.
254 # Default it false, to turn on set to true.
255 attr_accessor :stagger_x_labels
255 attr_accessor :stagger_x_labels
256 # This puts the Y labels at alternative levels so if they
256 # This puts the Y labels at alternative levels so if they
257 # are long field names they will not overlap so easily.
257 # are long field names they will not overlap so easily.
258 # Default it false, to turn on set to true.
258 # Default it false, to turn on set to true.
259 attr_accessor :stagger_y_labels
259 attr_accessor :stagger_y_labels
260 # This turns the X axis labels by 90 degrees.
260 # This turns the X axis labels by 90 degrees.
261 # Default it false, to turn on set to true.
261 # Default it false, to turn on set to true.
262 attr_accessor :rotate_x_labels
262 attr_accessor :rotate_x_labels
263 # This turns the Y axis labels by 90 degrees.
263 # This turns the Y axis labels by 90 degrees.
264 # Default it false, to turn on set to true.
264 # Default it false, to turn on set to true.
265 attr_accessor :rotate_y_labels
265 attr_accessor :rotate_y_labels
266 # How many "steps" to use between displayed X axis labels,
266 # How many "steps" to use between displayed X axis labels,
267 # a step of one means display every label, a step of two results
267 # a step of one means display every label, a step of two results
268 # in every other label being displayed (label <gap> label <gap> label),
268 # in every other label being displayed (label <gap> label <gap> label),
269 # a step of three results in every third label being displayed
269 # a step of three results in every third label being displayed
270 # (label <gap> <gap> label <gap> <gap> label) and so on.
270 # (label <gap> <gap> label <gap> <gap> label) and so on.
271 attr_accessor :step_x_labels
271 attr_accessor :step_x_labels
272 # Whether to (when taking "steps" between X axis labels) step from
272 # Whether to (when taking "steps" between X axis labels) step from
273 # the first label (i.e. always include the first label) or step from
273 # the first label (i.e. always include the first label) or step from
274 # the X axis origin (i.e. start with a gap if step_x_labels is greater
274 # the X axis origin (i.e. start with a gap if step_x_labels is greater
275 # than one).
275 # than one).
276 attr_accessor :step_include_first_x_label
276 attr_accessor :step_include_first_x_label
277 # Whether to show labels on the Y axis or not, defaults
277 # Whether to show labels on the Y axis or not, defaults
278 # to true, set to false if you want to turn them off.
278 # to true, set to false if you want to turn them off.
279 attr_accessor :show_y_labels
279 attr_accessor :show_y_labels
280 # Ensures only whole numbers are used as the scale divisions.
280 # Ensures only whole numbers are used as the scale divisions.
281 # Default it false, to turn on set to true. This has no effect if
281 # Default it false, to turn on set to true. This has no effect if
282 # scale divisions are less than 1.
282 # scale divisions are less than 1.
283 attr_accessor :scale_integers
283 attr_accessor :scale_integers
284 # This defines the gap between markers on the Y axis,
284 # This defines the gap between markers on the Y axis,
285 # default is a 10th of the max_value, e.g. you will have
285 # default is a 10th of the max_value, e.g. you will have
286 # 10 markers on the Y axis. NOTE: do not set this too
286 # 10 markers on the Y axis. NOTE: do not set this too
287 # low - you are limited to 999 markers, after that the
287 # low - you are limited to 999 markers, after that the
288 # graph won't generate.
288 # graph won't generate.
289 attr_accessor :scale_divisions
289 attr_accessor :scale_divisions
290 # Whether to show the title under the X axis labels,
290 # Whether to show the title under the X axis labels,
291 # default is false, set to true to show.
291 # default is false, set to true to show.
292 attr_accessor :show_x_title
292 attr_accessor :show_x_title
293 # What the title under X axis should be, e.g. 'Months'.
293 # What the title under X axis should be, e.g. 'Months'.
294 attr_accessor :x_title
294 attr_accessor :x_title
295 # Whether to show the title under the Y axis labels,
295 # Whether to show the title under the Y axis labels,
296 # default is false, set to true to show.
296 # default is false, set to true to show.
297 attr_accessor :show_y_title
297 attr_accessor :show_y_title
298 # Aligns writing mode for Y axis label.
298 # Aligns writing mode for Y axis label.
299 # Defaults to :bt (Bottom to Top).
299 # Defaults to :bt (Bottom to Top).
300 # Change to :tb (Top to Bottom) to reverse.
300 # Change to :tb (Top to Bottom) to reverse.
301 attr_accessor :y_title_text_direction
301 attr_accessor :y_title_text_direction
302 # What the title under Y axis should be, e.g. 'Sales in thousands'.
302 # What the title under Y axis should be, e.g. 'Sales in thousands'.
303 attr_accessor :y_title
303 attr_accessor :y_title
304 # Whether to show a title on the graph, defaults
304 # Whether to show a title on the graph, defaults
305 # to false, set to true to show.
305 # to false, set to true to show.
306 attr_accessor :show_graph_title
306 attr_accessor :show_graph_title
307 # What the title on the graph should be.
307 # What the title on the graph should be.
308 attr_accessor :graph_title
308 attr_accessor :graph_title
309 # Whether to show a subtitle on the graph, defaults
309 # Whether to show a subtitle on the graph, defaults
310 # to false, set to true to show.
310 # to false, set to true to show.
311 attr_accessor :show_graph_subtitle
311 attr_accessor :show_graph_subtitle
312 # What the subtitle on the graph should be.
312 # What the subtitle on the graph should be.
313 attr_accessor :graph_subtitle
313 attr_accessor :graph_subtitle
314 # Whether to show a key, defaults to false, set to
314 # Whether to show a key, defaults to false, set to
315 # true if you want to show it.
315 # true if you want to show it.
316 attr_accessor :key
316 attr_accessor :key
317 # Where the key should be positioned, defaults to
317 # Where the key should be positioned, defaults to
318 # :right, set to :bottom if you want to move it.
318 # :right, set to :bottom if you want to move it.
319 attr_accessor :key_position
319 attr_accessor :key_position
320 # Set the font size (in points) of the data point labels
320 # Set the font size (in points) of the data point labels
321 attr_accessor :font_size
321 attr_accessor :font_size
322 # Set the font size of the X axis labels
322 # Set the font size of the X axis labels
323 attr_accessor :x_label_font_size
323 attr_accessor :x_label_font_size
324 # Set the font size of the X axis title
324 # Set the font size of the X axis title
325 attr_accessor :x_title_font_size
325 attr_accessor :x_title_font_size
326 # Set the font size of the Y axis labels
326 # Set the font size of the Y axis labels
327 attr_accessor :y_label_font_size
327 attr_accessor :y_label_font_size
328 # Set the font size of the Y axis title
328 # Set the font size of the Y axis title
329 attr_accessor :y_title_font_size
329 attr_accessor :y_title_font_size
330 # Set the title font size
330 # Set the title font size
331 attr_accessor :title_font_size
331 attr_accessor :title_font_size
332 # Set the subtitle font size
332 # Set the subtitle font size
333 attr_accessor :subtitle_font_size
333 attr_accessor :subtitle_font_size
334 # Set the key font size
334 # Set the key font size
335 attr_accessor :key_font_size
335 attr_accessor :key_font_size
336 # Show guidelines for the X axis
336 # Show guidelines for the X axis
337 attr_accessor :show_x_guidelines
337 attr_accessor :show_x_guidelines
338 # Show guidelines for the Y axis
338 # Show guidelines for the Y axis
339 attr_accessor :show_y_guidelines
339 attr_accessor :show_y_guidelines
340 # Do not use CSS if set to true. Many SVG viewers do not support CSS, but
340 # Do not use CSS if set to true. Many SVG viewers do not support CSS, but
341 # not using CSS can result in larger SVGs as well as making it impossible to
341 # not using CSS can result in larger SVGs as well as making it impossible to
342 # change colors after the chart is generated. Defaults to false.
342 # change colors after the chart is generated. Defaults to false.
343 attr_accessor :no_css
343 attr_accessor :no_css
344 # Add popups for the data points on some graphs
344 # Add popups for the data points on some graphs
345 attr_accessor :add_popups
345 attr_accessor :add_popups
346
346
347
347
348 protected
348 protected
349
349
350 def sort( *arrys )
350 def sort( *arrys )
351 sort_multiple( arrys )
351 sort_multiple( arrys )
352 end
352 end
353
353
354 # Overwrite configuration options with supplied options. Used
354 # Overwrite configuration options with supplied options. Used
355 # by subclasses.
355 # by subclasses.
356 def init_with config
356 def init_with config
357 config.each { |key, value|
357 config.each { |key, value|
358 self.send((key.to_s+"=").to_sym, value ) if respond_to? key.to_sym
358 self.send((key.to_s+"=").to_sym, value ) if respond_to? key.to_sym
359 }
359 }
360 end
360 end
361
361
362 attr_accessor :top_align, :top_font, :right_align, :right_font
362 attr_accessor :top_align, :top_font, :right_align, :right_font
363
363
364 KEY_BOX_SIZE = 12
364 KEY_BOX_SIZE = 12
365
365
366 # Override this (and call super) to change the margin to the left
366 # Override this (and call super) to change the margin to the left
367 # of the plot area. Results in @border_left being set.
367 # of the plot area. Results in @border_left being set.
368 def calculate_left_margin
368 def calculate_left_margin
369 @border_left = 7
369 @border_left = 7
370 # Check for Y labels
370 # Check for Y labels
371 max_y_label_height_px = rotate_y_labels ?
371 max_y_label_height_px = rotate_y_labels ?
372 y_label_font_size :
372 y_label_font_size :
373 get_y_labels.max{|a,b|
373 get_y_labels.max{|a,b|
374 a.to_s.length<=>b.to_s.length
374 a.to_s.length<=>b.to_s.length
375 }.to_s.length * y_label_font_size * 0.6
375 }.to_s.length * y_label_font_size * 0.6
376 @border_left += max_y_label_height_px if show_y_labels
376 @border_left += max_y_label_height_px if show_y_labels
377 @border_left += max_y_label_height_px + 10 if stagger_y_labels
377 @border_left += max_y_label_height_px + 10 if stagger_y_labels
378 @border_left += y_title_font_size + 5 if show_y_title
378 @border_left += y_title_font_size + 5 if show_y_title
379 end
379 end
380
380
381
381
382 # Calculates the width of the widest Y label. This will be the
382 # Calculates the width of the widest Y label. This will be the
383 # character height if the Y labels are rotated
383 # character height if the Y labels are rotated
384 def max_y_label_width_px
384 def max_y_label_width_px
385 return font_size if rotate_y_labels
385 return font_size if rotate_y_labels
386 end
386 end
387
387
388
388
389 # Override this (and call super) to change the margin to the right
389 # Override this (and call super) to change the margin to the right
390 # of the plot area. Results in @border_right being set.
390 # of the plot area. Results in @border_right being set.
391 def calculate_right_margin
391 def calculate_right_margin
392 @border_right = 7
392 @border_right = 7
393 if key and key_position == :right
393 if key and key_position == :right
394 val = keys.max { |a,b| a.length <=> b.length }
394 val = keys.max { |a,b| a.length <=> b.length }
395 @border_right += val.length * key_font_size * 0.6
395 @border_right += val.length * key_font_size * 0.6
396 @border_right += KEY_BOX_SIZE
396 @border_right += KEY_BOX_SIZE
397 @border_right += 10 # Some padding around the box
397 @border_right += 10 # Some padding around the box
398 end
398 end
399 end
399 end
400
400
401
401
402 # Override this (and call super) to change the margin to the top
402 # Override this (and call super) to change the margin to the top
403 # of the plot area. Results in @border_top being set.
403 # of the plot area. Results in @border_top being set.
404 def calculate_top_margin
404 def calculate_top_margin
405 @border_top = 5
405 @border_top = 5
406 @border_top += title_font_size if show_graph_title
406 @border_top += title_font_size if show_graph_title
407 @border_top += 5
407 @border_top += 5
408 @border_top += subtitle_font_size if show_graph_subtitle
408 @border_top += subtitle_font_size if show_graph_subtitle
409 end
409 end
410
410
411
411
412 # Adds pop-up point information to a graph.
412 # Adds pop-up point information to a graph.
413 def add_popup( x, y, label )
413 def add_popup( x, y, label )
414 txt_width = label.length * font_size * 0.6 + 10
414 txt_width = label.length * font_size * 0.6 + 10
415 tx = (x+txt_width > width ? x-5 : x+5)
415 tx = (x+txt_width > width ? x-5 : x+5)
416 t = @foreground.add_element( "text", {
416 t = @foreground.add_element( "text", {
417 "x" => tx.to_s,
417 "x" => tx.to_s,
418 "y" => (y - font_size).to_s,
418 "y" => (y - font_size).to_s,
419 "visibility" => "hidden",
419 "visibility" => "hidden",
420 })
420 })
421 t.attributes["style"] = "fill: #000; "+
421 t.attributes["style"] = "fill: #000; "+
422 (x+txt_width > width ? "text-anchor: end;" : "text-anchor: start;")
422 (x+txt_width > width ? "text-anchor: end;" : "text-anchor: start;")
423 t.text = label.to_s
423 t.text = label.to_s
424 t.attributes["id"] = t.object_id.to_s
424 t.attributes["id"] = t.object_id.to_s
425
425
426 @foreground.add_element( "circle", {
426 @foreground.add_element( "circle", {
427 "cx" => x.to_s,
427 "cx" => x.to_s,
428 "cy" => y.to_s,
428 "cy" => y.to_s,
429 "r" => "10",
429 "r" => "10",
430 "style" => "opacity: 0",
430 "style" => "opacity: 0",
431 "onmouseover" =>
431 "onmouseover" =>
432 "document.getElementById(#{t.object_id}).setAttribute('visibility', 'visible' )",
432 "document.getElementById(#{t.object_id}).setAttribute('visibility', 'visible' )",
433 "onmouseout" =>
433 "onmouseout" =>
434 "document.getElementById(#{t.object_id}).setAttribute('visibility', 'hidden' )",
434 "document.getElementById(#{t.object_id}).setAttribute('visibility', 'hidden' )",
435 })
435 })
436
436
437 end
437 end
438
438
439
439
440 # Override this (and call super) to change the margin to the bottom
440 # Override this (and call super) to change the margin to the bottom
441 # of the plot area. Results in @border_bottom being set.
441 # of the plot area. Results in @border_bottom being set.
442 def calculate_bottom_margin
442 def calculate_bottom_margin
443 @border_bottom = 7
443 @border_bottom = 7
444 if key and key_position == :bottom
444 if key and key_position == :bottom
445 @border_bottom += @data.size * (font_size + 5)
445 @border_bottom += @data.size * (font_size + 5)
446 @border_bottom += 10
446 @border_bottom += 10
447 end
447 end
448 if show_x_labels
448 if show_x_labels
449 max_x_label_height_px = (not rotate_x_labels) ?
449 max_x_label_height_px = (not rotate_x_labels) ?
450 x_label_font_size :
450 x_label_font_size :
451 get_x_labels.max{|a,b|
451 get_x_labels.max{|a,b|
452 a.to_s.length<=>b.to_s.length
452 a.to_s.length<=>b.to_s.length
453 }.to_s.length * x_label_font_size * 0.6
453 }.to_s.length * x_label_font_size * 0.6
454 @border_bottom += max_x_label_height_px
454 @border_bottom += max_x_label_height_px
455 @border_bottom += max_x_label_height_px + 10 if stagger_x_labels
455 @border_bottom += max_x_label_height_px + 10 if stagger_x_labels
456 end
456 end
457 @border_bottom += x_title_font_size + 5 if show_x_title
457 @border_bottom += x_title_font_size + 5 if show_x_title
458 end
458 end
459
459
460
460
461 # Draws the background, axis, and labels.
461 # Draws the background, axis, and labels.
462 def draw_graph
462 def draw_graph
463 @graph = @root.add_element( "g", {
463 @graph = @root.add_element( "g", {
464 "transform" => "translate( #@border_left #@border_top )"
464 "transform" => "translate( #@border_left #@border_top )"
465 })
465 })
466
466
467 # Background
467 # Background
468 @graph.add_element( "rect", {
468 @graph.add_element( "rect", {
469 "x" => "0",
469 "x" => "0",
470 "y" => "0",
470 "y" => "0",
471 "width" => @graph_width.to_s,
471 "width" => @graph_width.to_s,
472 "height" => @graph_height.to_s,
472 "height" => @graph_height.to_s,
473 "class" => "graphBackground"
473 "class" => "graphBackground"
474 })
474 })
475
475
476 # Axis
476 # Axis
477 @graph.add_element( "path", {
477 @graph.add_element( "path", {
478 "d" => "M 0 0 v#@graph_height",
478 "d" => "M 0 0 v#@graph_height",
479 "class" => "axis",
479 "class" => "axis",
480 "id" => "xAxis"
480 "id" => "xAxis"
481 })
481 })
482 @graph.add_element( "path", {
482 @graph.add_element( "path", {
483 "d" => "M 0 #@graph_height h#@graph_width",
483 "d" => "M 0 #@graph_height h#@graph_width",
484 "class" => "axis",
484 "class" => "axis",
485 "id" => "yAxis"
485 "id" => "yAxis"
486 })
486 })
487
487
488 draw_x_labels
488 draw_x_labels
489 draw_y_labels
489 draw_y_labels
490 end
490 end
491
491
492
492
493 # Where in the X area the label is drawn
493 # Where in the X area the label is drawn
494 # Centered in the field, should be width/2. Start, 0.
494 # Centered in the field, should be width/2. Start, 0.
495 def x_label_offset( width )
495 def x_label_offset( width )
496 0
496 0
497 end
497 end
498
498
499 def make_datapoint_text( x, y, value, style="" )
499 def make_datapoint_text( x, y, value, style="" )
500 if show_data_values
500 if show_data_values
501 @foreground.add_element( "text", {
501 @foreground.add_element( "text", {
502 "x" => x.to_s,
502 "x" => x.to_s,
503 "y" => y.to_s,
503 "y" => y.to_s,
504 "class" => "dataPointLabel",
504 "class" => "dataPointLabel",
505 "style" => "#{style} stroke: #fff; stroke-width: 2;"
505 "style" => "#{style} stroke: #fff; stroke-width: 2;"
506 }).text = value.to_s
506 }).text = value.to_s
507 text = @foreground.add_element( "text", {
507 text = @foreground.add_element( "text", {
508 "x" => x.to_s,
508 "x" => x.to_s,
509 "y" => y.to_s,
509 "y" => y.to_s,
510 "class" => "dataPointLabel"
510 "class" => "dataPointLabel"
511 })
511 })
512 text.text = value.to_s
512 text.text = value.to_s
513 text.attributes["style"] = style if style.length > 0
513 text.attributes["style"] = style if style.length > 0
514 end
514 end
515 end
515 end
516
516
517
517
518 # Draws the X axis labels
518 # Draws the X axis labels
519 def draw_x_labels
519 def draw_x_labels
520 stagger = x_label_font_size + 5
520 stagger = x_label_font_size + 5
521 if show_x_labels
521 if show_x_labels
522 label_width = field_width
522 label_width = field_width
523
523
524 count = 0
524 count = 0
525 for label in get_x_labels
525 for label in get_x_labels
526 if step_include_first_x_label == true then
526 if step_include_first_x_label == true then
527 step = count % step_x_labels
527 step = count % step_x_labels
528 else
528 else
529 step = (count + 1) % step_x_labels
529 step = (count + 1) % step_x_labels
530 end
530 end
531
531
532 if step == 0 then
532 if step == 0 then
533 text = @graph.add_element( "text" )
533 text = @graph.add_element( "text" )
534 text.attributes["class"] = "xAxisLabels"
534 text.attributes["class"] = "xAxisLabels"
535 text.text = label.to_s
535 text.text = label.to_s
536
536
537 x = count * label_width + x_label_offset( label_width )
537 x = count * label_width + x_label_offset( label_width )
538 y = @graph_height + x_label_font_size + 3
538 y = @graph_height + x_label_font_size + 3
539 t = 0 - (font_size / 2)
539 t = 0 - (font_size / 2)
540
540
541 if stagger_x_labels and count % 2 == 1
541 if stagger_x_labels and count % 2 == 1
542 y += stagger
542 y += stagger
543 @graph.add_element( "path", {
543 @graph.add_element( "path", {
544 "d" => "M#{x} #@graph_height v#{stagger}",
544 "d" => "M#{x} #@graph_height v#{stagger}",
545 "class" => "staggerGuideLine"
545 "class" => "staggerGuideLine"
546 })
546 })
547 end
547 end
548
548
549 text.attributes["x"] = x.to_s
549 text.attributes["x"] = x.to_s
550 text.attributes["y"] = y.to_s
550 text.attributes["y"] = y.to_s
551 if rotate_x_labels
551 if rotate_x_labels
552 text.attributes["transform"] =
552 text.attributes["transform"] =
553 "rotate( 90 #{x} #{y-x_label_font_size} )"+
553 "rotate( 90 #{x} #{y-x_label_font_size} )"+
554 " translate( 0 -#{x_label_font_size/4} )"
554 " translate( 0 -#{x_label_font_size/4} )"
555 text.attributes["style"] = "text-anchor: start"
555 text.attributes["style"] = "text-anchor: start"
556 else
556 else
557 text.attributes["style"] = "text-anchor: middle"
557 text.attributes["style"] = "text-anchor: middle"
558 end
558 end
559 end
559 end
560
560
561 draw_x_guidelines( label_width, count ) if show_x_guidelines
561 draw_x_guidelines( label_width, count ) if show_x_guidelines
562 count += 1
562 count += 1
563 end
563 end
564 end
564 end
565 end
565 end
566
566
567
567
568 # Where in the Y area the label is drawn
568 # Where in the Y area the label is drawn
569 # Centered in the field, should be width/2. Start, 0.
569 # Centered in the field, should be width/2. Start, 0.
570 def y_label_offset( height )
570 def y_label_offset( height )
571 0
571 0
572 end
572 end
573
573
574
574
575 def field_width
575 def field_width
576 (@graph_width.to_f - font_size*2*right_font) /
576 (@graph_width.to_f - font_size*2*right_font) /
577 (get_x_labels.length - right_align)
577 (get_x_labels.length - right_align)
578 end
578 end
579
579
580
580
581 def field_height
581 def field_height
582 (@graph_height.to_f - font_size*2*top_font) /
582 (@graph_height.to_f - font_size*2*top_font) /
583 (get_y_labels.length - top_align)
583 (get_y_labels.length - top_align)
584 end
584 end
585
585
586
586
587 # Draws the Y axis labels
587 # Draws the Y axis labels
588 def draw_y_labels
588 def draw_y_labels
589 stagger = y_label_font_size + 5
589 stagger = y_label_font_size + 5
590 if show_y_labels
590 if show_y_labels
591 label_height = field_height
591 label_height = field_height
592
592
593 count = 0
593 count = 0
594 y_offset = @graph_height + y_label_offset( label_height )
594 y_offset = @graph_height + y_label_offset( label_height )
595 y_offset += font_size/1.2 unless rotate_y_labels
595 y_offset += font_size/1.2 unless rotate_y_labels
596 for label in get_y_labels
596 for label in get_y_labels
597 y = y_offset - (label_height * count)
597 y = y_offset - (label_height * count)
598 x = rotate_y_labels ? 0 : -3
598 x = rotate_y_labels ? 0 : -3
599
599
600 if stagger_y_labels and count % 2 == 1
600 if stagger_y_labels and count % 2 == 1
601 x -= stagger
601 x -= stagger
602 @graph.add_element( "path", {
602 @graph.add_element( "path", {
603 "d" => "M#{x} #{y} h#{stagger}",
603 "d" => "M#{x} #{y} h#{stagger}",
604 "class" => "staggerGuideLine"
604 "class" => "staggerGuideLine"
605 })
605 })
606 end
606 end
607
607
608 text = @graph.add_element( "text", {
608 text = @graph.add_element( "text", {
609 "x" => x.to_s,
609 "x" => x.to_s,
610 "y" => y.to_s,
610 "y" => y.to_s,
611 "class" => "yAxisLabels"
611 "class" => "yAxisLabels"
612 })
612 })
613 text.text = label.to_s
613 text.text = label.to_s
614 if rotate_y_labels
614 if rotate_y_labels
615 text.attributes["transform"] = "translate( -#{font_size} 0 ) "+
615 text.attributes["transform"] = "translate( -#{font_size} 0 ) "+
616 "rotate( 90 #{x} #{y} ) "
616 "rotate( 90 #{x} #{y} ) "
617 text.attributes["style"] = "text-anchor: middle"
617 text.attributes["style"] = "text-anchor: middle"
618 else
618 else
619 text.attributes["y"] = (y - (y_label_font_size/2)).to_s
619 text.attributes["y"] = (y - (y_label_font_size/2)).to_s
620 text.attributes["style"] = "text-anchor: end"
620 text.attributes["style"] = "text-anchor: end"
621 end
621 end
622 draw_y_guidelines( label_height, count ) if show_y_guidelines
622 draw_y_guidelines( label_height, count ) if show_y_guidelines
623 count += 1
623 count += 1
624 end
624 end
625 end
625 end
626 end
626 end
627
627
628
628
629 # Draws the X axis guidelines
629 # Draws the X axis guidelines
630 def draw_x_guidelines( label_height, count )
630 def draw_x_guidelines( label_height, count )
631 if count != 0
631 if count != 0
632 @graph.add_element( "path", {
632 @graph.add_element( "path", {
633 "d" => "M#{label_height*count} 0 v#@graph_height",
633 "d" => "M#{label_height*count} 0 v#@graph_height",
634 "class" => "guideLines"
634 "class" => "guideLines"
635 })
635 })
636 end
636 end
637 end
637 end
638
638
639
639
640 # Draws the Y axis guidelines
640 # Draws the Y axis guidelines
641 def draw_y_guidelines( label_height, count )
641 def draw_y_guidelines( label_height, count )
642 if count != 0
642 if count != 0
643 @graph.add_element( "path", {
643 @graph.add_element( "path", {
644 "d" => "M0 #{@graph_height-(label_height*count)} h#@graph_width",
644 "d" => "M0 #{@graph_height-(label_height*count)} h#@graph_width",
645 "class" => "guideLines"
645 "class" => "guideLines"
646 })
646 })
647 end
647 end
648 end
648 end
649
649
650
650
651 # Draws the graph title and subtitle
651 # Draws the graph title and subtitle
652 def draw_titles
652 def draw_titles
653 if show_graph_title
653 if show_graph_title
654 @root.add_element( "text", {
654 @root.add_element( "text", {
655 "x" => (width / 2).to_s,
655 "x" => (width / 2).to_s,
656 "y" => (title_font_size).to_s,
656 "y" => (title_font_size).to_s,
657 "class" => "mainTitle"
657 "class" => "mainTitle"
658 }).text = graph_title.to_s
658 }).text = graph_title.to_s
659 end
659 end
660
660
661 if show_graph_subtitle
661 if show_graph_subtitle
662 y_subtitle = show_graph_title ?
662 y_subtitle = show_graph_title ?
663 title_font_size + 10 :
663 title_font_size + 10 :
664 subtitle_font_size
664 subtitle_font_size
665 @root.add_element("text", {
665 @root.add_element("text", {
666 "x" => (width / 2).to_s,
666 "x" => (width / 2).to_s,
667 "y" => (y_subtitle).to_s,
667 "y" => (y_subtitle).to_s,
668 "class" => "subTitle"
668 "class" => "subTitle"
669 }).text = graph_subtitle.to_s
669 }).text = graph_subtitle.to_s
670 end
670 end
671
671
672 if show_x_title
672 if show_x_title
673 y = @graph_height + @border_top + x_title_font_size
673 y = @graph_height + @border_top + x_title_font_size
674 if show_x_labels
674 if show_x_labels
675 y += x_label_font_size + 5 if stagger_x_labels
675 y += x_label_font_size + 5 if stagger_x_labels
676 y += x_label_font_size + 5
676 y += x_label_font_size + 5
677 end
677 end
678 x = width / 2
678 x = width / 2
679
679
680 @root.add_element("text", {
680 @root.add_element("text", {
681 "x" => x.to_s,
681 "x" => x.to_s,
682 "y" => y.to_s,
682 "y" => y.to_s,
683 "class" => "xAxisTitle",
683 "class" => "xAxisTitle",
684 }).text = x_title.to_s
684 }).text = x_title.to_s
685 end
685 end
686
686
687 if show_y_title
687 if show_y_title
688 x = y_title_font_size + (y_title_text_direction==:bt ? 3 : -3)
688 x = y_title_font_size + (y_title_text_direction==:bt ? 3 : -3)
689 y = height / 2
689 y = height / 2
690
690
691 text = @root.add_element("text", {
691 text = @root.add_element("text", {
692 "x" => x.to_s,
692 "x" => x.to_s,
693 "y" => y.to_s,
693 "y" => y.to_s,
694 "class" => "yAxisTitle",
694 "class" => "yAxisTitle",
695 })
695 })
696 text.text = y_title.to_s
696 text.text = y_title.to_s
697 if y_title_text_direction == :bt
697 if y_title_text_direction == :bt
698 text.attributes["transform"] = "rotate( -90, #{x}, #{y} )"
698 text.attributes["transform"] = "rotate( -90, #{x}, #{y} )"
699 else
699 else
700 text.attributes["transform"] = "rotate( 90, #{x}, #{y} )"
700 text.attributes["transform"] = "rotate( 90, #{x}, #{y} )"
701 end
701 end
702 end
702 end
703 end
703 end
704
704
705 def keys
705 def keys
706 return @data.collect{ |d| d[:title] }
706 return @data.collect{ |d| d[:title] }
707 end
707 end
708
708
709 # Draws the legend on the graph
709 # Draws the legend on the graph
710 def draw_legend
710 def draw_legend
711 if key
711 if key
712 group = @root.add_element( "g" )
712 group = @root.add_element( "g" )
713
713
714 key_count = 0
714 key_count = 0
715 for key_name in keys
715 for key_name in keys
716 y_offset = (KEY_BOX_SIZE * key_count) + (key_count * 5)
716 y_offset = (KEY_BOX_SIZE * key_count) + (key_count * 5)
717 group.add_element( "rect", {
717 group.add_element( "rect", {
718 "x" => 0.to_s,
718 "x" => 0.to_s,
719 "y" => y_offset.to_s,
719 "y" => y_offset.to_s,
720 "width" => KEY_BOX_SIZE.to_s,
720 "width" => KEY_BOX_SIZE.to_s,
721 "height" => KEY_BOX_SIZE.to_s,
721 "height" => KEY_BOX_SIZE.to_s,
722 "class" => "key#{key_count+1}"
722 "class" => "key#{key_count+1}"
723 })
723 })
724 group.add_element( "text", {
724 group.add_element( "text", {
725 "x" => (KEY_BOX_SIZE + 5).to_s,
725 "x" => (KEY_BOX_SIZE + 5).to_s,
726 "y" => (y_offset + KEY_BOX_SIZE).to_s,
726 "y" => (y_offset + KEY_BOX_SIZE).to_s,
727 "class" => "keyText"
727 "class" => "keyText"
728 }).text = key_name.to_s
728 }).text = key_name.to_s
729 key_count += 1
729 key_count += 1
730 end
730 end
731
731
732 case key_position
732 case key_position
733 when :right
733 when :right
734 x_offset = @graph_width + @border_left + 10
734 x_offset = @graph_width + @border_left + 10
735 y_offset = @border_top + 20
735 y_offset = @border_top + 20
736 when :bottom
736 when :bottom
737 x_offset = @border_left + 20
737 x_offset = @border_left + 20
738 y_offset = @border_top + @graph_height + 5
738 y_offset = @border_top + @graph_height + 5
739 if show_x_labels
739 if show_x_labels
740 max_x_label_height_px = (not rotate_x_labels) ?
740 max_x_label_height_px = (not rotate_x_labels) ?
741 x_label_font_size :
741 x_label_font_size :
742 get_x_labels.max{|a,b|
742 get_x_labels.max{|a,b|
743 a.to_s.length<=>b.to_s.length
743 a.to_s.length<=>b.to_s.length
744 }.to_s.length * x_label_font_size * 0.6
744 }.to_s.length * x_label_font_size * 0.6
745 x_label_font_size
745 x_label_font_size
746 y_offset += max_x_label_height_px
746 y_offset += max_x_label_height_px
747 y_offset += max_x_label_height_px + 5 if stagger_x_labels
747 y_offset += max_x_label_height_px + 5 if stagger_x_labels
748 end
748 end
749 y_offset += x_title_font_size + 5 if show_x_title
749 y_offset += x_title_font_size + 5 if show_x_title
750 end
750 end
751 group.attributes["transform"] = "translate(#{x_offset} #{y_offset})"
751 group.attributes["transform"] = "translate(#{x_offset} #{y_offset})"
752 end
752 end
753 end
753 end
754
754
755
755
756 private
756 private
757
757
758 def sort_multiple( arrys, lo=0, hi=arrys[0].length-1 )
758 def sort_multiple( arrys, lo=0, hi=arrys[0].length-1 )
759 if lo < hi
759 if lo < hi
760 p = partition(arrys,lo,hi)
760 p = partition(arrys,lo,hi)
761 sort_multiple(arrys, lo, p-1)
761 sort_multiple(arrys, lo, p-1)
762 sort_multiple(arrys, p+1, hi)
762 sort_multiple(arrys, p+1, hi)
763 end
763 end
764 arrys
764 arrys
765 end
765 end
766
766
767 def partition( arrys, lo, hi )
767 def partition( arrys, lo, hi )
768 p = arrys[0][lo]
768 p = arrys[0][lo]
769 l = lo
769 l = lo
770 z = lo+1
770 z = lo+1
771 while z <= hi
771 while z <= hi
772 if arrys[0][z] < p
772 if arrys[0][z] < p
773 l += 1
773 l += 1
774 arrys.each { |arry| arry[z], arry[l] = arry[l], arry[z] }
774 arrys.each { |arry| arry[z], arry[l] = arry[l], arry[z] }
775 end
775 end
776 z += 1
776 z += 1
777 end
777 end
778 arrys.each { |arry| arry[lo], arry[l] = arry[l], arry[lo] }
778 arrys.each { |arry| arry[lo], arry[l] = arry[l], arry[lo] }
779 l
779 l
780 end
780 end
781
781
782 def style
782 def style
783 if no_css
783 if no_css
784 styles = parse_css
784 styles = parse_css
785 @root.elements.each("//*[@class]") { |el|
785 @root.elements.each("//*[@class]") { |el|
786 cl = el.attributes["class"]
786 cl = el.attributes["class"]
787 style = styles[cl]
787 style = styles[cl]
788 style += el.attributes["style"] if el.attributes["style"]
788 style += el.attributes["style"] if el.attributes["style"]
789 el.attributes["style"] = style
789 el.attributes["style"] = style
790 }
790 }
791 end
791 end
792 end
792 end
793
793
794 def parse_css
794 def parse_css
795 css = get_style
795 css = get_style
796 rv = {}
796 rv = {}
797 while css =~ /^(\.(\w+)(?:\s*,\s*\.\w+)*)\s*\{/m
797 while css =~ /^(\.(\w+)(?:\s*,\s*\.\w+)*)\s*\{/m
798 names_orig = names = $1
798 names_orig = names = $1
799 css = $'
799 css = $'
800 css =~ /([^}]+)\}/m
800 css =~ /([^}]+)\}/m
801 content = $1
801 content = $1
802 css = $'
802 css = $'
803
803
804 nms = []
804 nms = []
805 while names =~ /^\s*,?\s*\.(\w+)/
805 while names =~ /^\s*,?\s*\.(\w+)/
806 nms << $1
806 nms << $1
807 names = $'
807 names = $'
808 end
808 end
809
809
810 content = content.tr( "\n\t", " ")
810 content = content.tr( "\n\t", " ")
811 for name in nms
811 for name in nms
812 current = rv[name]
812 current = rv[name]
813 current = current ? current+"; "+content : content
813 current = current ? current+"; "+content : content
814 rv[name] = current.strip.squeeze(" ")
814 rv[name] = current.strip.squeeze(" ")
815 end
815 end
816 end
816 end
817 return rv
817 return rv
818 end
818 end
819
819
820
820
821 # Override and place code to add defs here
821 # Override and place code to add defs here
822 def add_defs defs
822 def add_defs defs
823 end
823 end
824
824
825
825
826 def start_svg
826 def start_svg
827 # Base document
827 # Base document
828 @doc = Document.new
828 @doc = Document.new
829 @doc << XMLDecl.new
829 @doc << XMLDecl.new
830 @doc << DocType.new( %q{svg PUBLIC "-//W3C//DTD SVG 1.0//EN" } +
830 @doc << DocType.new( %q{svg PUBLIC "-//W3C//DTD SVG 1.0//EN" } +
831 %q{"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd"} )
831 %q{"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd"} )
832 if style_sheet && style_sheet != ''
832 if style_sheet && style_sheet != ''
833 @doc << Instruction.new( "xml-stylesheet",
833 @doc << Instruction.new( "xml-stylesheet",
834 %Q{href="#{style_sheet}" type="text/css"} )
834 %Q{href="#{style_sheet}" type="text/css"} )
835 end
835 end
836 @root = @doc.add_element( "svg", {
836 @root = @doc.add_element( "svg", {
837 "width" => width.to_s,
837 "width" => width.to_s,
838 "height" => height.to_s,
838 "height" => height.to_s,
839 "viewBox" => "0 0 #{width} #{height}",
839 "viewBox" => "0 0 #{width} #{height}",
840 "xmlns" => "http://www.w3.org/2000/svg",
840 "xmlns" => "http://www.w3.org/2000/svg",
841 "xmlns:xlink" => "http://www.w3.org/1999/xlink",
841 "xmlns:xlink" => "http://www.w3.org/1999/xlink",
842 "xmlns:a3" => "http://ns.adobe.com/AdobeSVGViewerExtensions/3.0/",
842 "xmlns:a3" => "http://ns.adobe.com/AdobeSVGViewerExtensions/3.0/",
843 "a3:scriptImplementation" => "Adobe"
843 "a3:scriptImplementation" => "Adobe"
844 })
844 })
845 @root << Comment.new( " "+"\\"*66 )
845 @root << Comment.new( " "+"\\"*66 )
846 @root << Comment.new( " Created with SVG::Graph " )
846 @root << Comment.new( " Created with SVG::Graph " )
847 @root << Comment.new( " SVG::Graph by Sean E. Russell " )
847 @root << Comment.new( " SVG::Graph by Sean E. Russell " )
848 @root << Comment.new( " Losely based on SVG::TT::Graph for Perl by"+
848 @root << Comment.new( " Losely based on SVG::TT::Graph for Perl by"+
849 " Leo Lapworth & Stephan Morgan " )
849 " Leo Lapworth & Stephan Morgan " )
850 @root << Comment.new( " "+"/"*66 )
850 @root << Comment.new( " "+"/"*66 )
851
851
852 defs = @root.add_element( "defs" )
852 defs = @root.add_element( "defs" )
853 add_defs defs
853 add_defs defs
854 if not(style_sheet && style_sheet != '') and !no_css
854 if not(style_sheet && style_sheet != '') and !no_css
855 @root << Comment.new(" include default stylesheet if none specified ")
855 @root << Comment.new(" include default stylesheet if none specified ")
856 style = defs.add_element( "style", {"type"=>"text/css"} )
856 style = defs.add_element( "style", {"type"=>"text/css"} )
857 style << CData.new( get_style )
857 style << CData.new( get_style )
858 end
858 end
859
859
860 @root << Comment.new( "SVG Background" )
860 @root << Comment.new( "SVG Background" )
861 @root.add_element( "rect", {
861 @root.add_element( "rect", {
862 "width" => width.to_s,
862 "width" => width.to_s,
863 "height" => height.to_s,
863 "height" => height.to_s,
864 "x" => "0",
864 "x" => "0",
865 "y" => "0",
865 "y" => "0",
866 "class" => "svgBackground"
866 "class" => "svgBackground"
867 })
867 })
868 end
868 end
869
869
870
870
871 def calculate_graph_dimensions
871 def calculate_graph_dimensions
872 calculate_left_margin
872 calculate_left_margin
873 calculate_right_margin
873 calculate_right_margin
874 calculate_bottom_margin
874 calculate_bottom_margin
875 calculate_top_margin
875 calculate_top_margin
876 @graph_width = width - @border_left - @border_right
876 @graph_width = width - @border_left - @border_right
877 @graph_height = height - @border_top - @border_bottom
877 @graph_height = height - @border_top - @border_bottom
878 end
878 end
879
879
880 def get_style
880 def get_style
881 return <<EOL
881 return <<EOL
882 /* Copy from here for external style sheet */
882 /* Copy from here for external style sheet */
883 .svgBackground{
883 .svgBackground{
884 fill:#ffffff;
884 fill:#ffffff;
885 }
885 }
886 .graphBackground{
886 .graphBackground{
887 fill:#f0f0f0;
887 fill:#f0f0f0;
888 }
888 }
889
889
890 /* graphs titles */
890 /* graphs titles */
891 .mainTitle{
891 .mainTitle{
892 text-anchor: middle;
892 text-anchor: middle;
893 fill: #000000;
893 fill: #000000;
894 font-size: #{title_font_size}px;
894 font-size: #{title_font_size}px;
895 font-family: "Arial", sans-serif;
895 font-family: "Arial", sans-serif;
896 font-weight: normal;
896 font-weight: normal;
897 }
897 }
898 .subTitle{
898 .subTitle{
899 text-anchor: middle;
899 text-anchor: middle;
900 fill: #999999;
900 fill: #999999;
901 font-size: #{subtitle_font_size}px;
901 font-size: #{subtitle_font_size}px;
902 font-family: "Arial", sans-serif;
902 font-family: "Arial", sans-serif;
903 font-weight: normal;
903 font-weight: normal;
904 }
904 }
905
905
906 .axis{
906 .axis{
907 stroke: #000000;
907 stroke: #000000;
908 stroke-width: 1px;
908 stroke-width: 1px;
909 }
909 }
910
910
911 .guideLines{
911 .guideLines{
912 stroke: #666666;
912 stroke: #666666;
913 stroke-width: 1px;
913 stroke-width: 1px;
914 stroke-dasharray: 5 5;
914 stroke-dasharray: 5 5;
915 }
915 }
916
916
917 .xAxisLabels{
917 .xAxisLabels{
918 text-anchor: middle;
918 text-anchor: middle;
919 fill: #000000;
919 fill: #000000;
920 font-size: #{x_label_font_size}px;
920 font-size: #{x_label_font_size}px;
921 font-family: "Arial", sans-serif;
921 font-family: "Arial", sans-serif;
922 font-weight: normal;
922 font-weight: normal;
923 }
923 }
924
924
925 .yAxisLabels{
925 .yAxisLabels{
926 text-anchor: end;
926 text-anchor: end;
927 fill: #000000;
927 fill: #000000;
928 font-size: #{y_label_font_size}px;
928 font-size: #{y_label_font_size}px;
929 font-family: "Arial", sans-serif;
929 font-family: "Arial", sans-serif;
930 font-weight: normal;
930 font-weight: normal;
931 }
931 }
932
932
933 .xAxisTitle{
933 .xAxisTitle{
934 text-anchor: middle;
934 text-anchor: middle;
935 fill: #ff0000;
935 fill: #ff0000;
936 font-size: #{x_title_font_size}px;
936 font-size: #{x_title_font_size}px;
937 font-family: "Arial", sans-serif;
937 font-family: "Arial", sans-serif;
938 font-weight: normal;
938 font-weight: normal;
939 }
939 }
940
940
941 .yAxisTitle{
941 .yAxisTitle{
942 fill: #ff0000;
942 fill: #ff0000;
943 text-anchor: middle;
943 text-anchor: middle;
944 font-size: #{y_title_font_size}px;
944 font-size: #{y_title_font_size}px;
945 font-family: "Arial", sans-serif;
945 font-family: "Arial", sans-serif;
946 font-weight: normal;
946 font-weight: normal;
947 }
947 }
948
948
949 .dataPointLabel{
949 .dataPointLabel{
950 fill: #000000;
950 fill: #000000;
951 text-anchor:middle;
951 text-anchor:middle;
952 font-size: 10px;
952 font-size: 10px;
953 font-family: "Arial", sans-serif;
953 font-family: "Arial", sans-serif;
954 font-weight: normal;
954 font-weight: normal;
955 }
955 }
956
956
957 .staggerGuideLine{
957 .staggerGuideLine{
958 fill: none;
958 fill: none;
959 stroke: #000000;
959 stroke: #000000;
960 stroke-width: 0.5px;
960 stroke-width: 0.5px;
961 }
961 }
962
962
963 #{get_css}
963 #{get_css}
964
964
965 .keyText{
965 .keyText{
966 fill: #000000;
966 fill: #000000;
967 text-anchor:start;
967 text-anchor:start;
968 font-size: #{key_font_size}px;
968 font-size: #{key_font_size}px;
969 font-family: "Arial", sans-serif;
969 font-family: "Arial", sans-serif;
970 font-weight: normal;
970 font-weight: normal;
971 }
971 }
972 /* End copy for external style sheet */
972 /* End copy for external style sheet */
973 EOL
973 EOL
974 end
974 end
975
975
976 end
976 end
977 end
977 end
978 end
978 end
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1 require 'SVG/Graph/Graph'
1 require 'SVG/Graph/Graph'
2
2
3 module SVG
3 module SVG
4 module Graph
4 module Graph
5 # === Create presentation quality SVG pie graphs easily
5 # === Create presentation quality SVG pie graphs easily
6 #
6 #
7 # == Synopsis
7 # == Synopsis
8 #
8 #
9 # require 'SVG/Graph/Pie'
9 # require 'SVG/Graph/Pie'
10 #
10 #
11 # fields = %w(Jan Feb Mar)
11 # fields = %w(Jan Feb Mar)
12 # data_sales_02 = [12, 45, 21]
12 # data_sales_02 = [12, 45, 21]
13 #
13 #
14 # graph = SVG::Graph::Pie.new({
14 # graph = SVG::Graph::Pie.new({
15 # :height => 500,
15 # :height => 500,
16 # :width => 300,
16 # :width => 300,
17 # :fields => fields,
17 # :fields => fields,
18 # })
18 # })
19 #
19 #
20 # graph.add_data({
20 # graph.add_data({
21 # :data => data_sales_02,
21 # :data => data_sales_02,
22 # :title => 'Sales 2002',
22 # :title => 'Sales 2002',
23 # })
23 # })
24 #
24 #
25 # print "Content-type: image/svg+xml\r\n\r\n"
25 # print "Content-type: image/svg+xml\r\n\r\n"
26 # print graph.burn();
26 # print graph.burn();
27 #
27 #
28 # == Description
28 # == Description
29 #
29 #
30 # This object aims to allow you to easily create high quality
30 # This object aims to allow you to easily create high quality
31 # SVG pie graphs. You can either use the default style sheet
31 # SVG pie graphs. You can either use the default style sheet
32 # or supply your own. Either way there are many options which can
32 # or supply your own. Either way there are many options which can
33 # be configured to give you control over how the graph is
33 # be configured to give you control over how the graph is
34 # generated - with or without a key, display percent on pie chart,
34 # generated - with or without a key, display percent on pie chart,
35 # title, subtitle etc.
35 # title, subtitle etc.
36 #
36 #
37 # = Examples
37 # = Examples
38 #
38 #
39 # http://www.germane-software/repositories/public/SVG/test/single.rb
39 # http://www.germane-software/repositories/public/SVG/test/single.rb
40 #
40 #
41 # == See also
41 # == See also
42 #
42 #
43 # * SVG::Graph::Graph
43 # * SVG::Graph::Graph
44 # * SVG::Graph::BarHorizontal
44 # * SVG::Graph::BarHorizontal
45 # * SVG::Graph::Bar
45 # * SVG::Graph::Bar
46 # * SVG::Graph::Line
46 # * SVG::Graph::Line
47 # * SVG::Graph::Plot
47 # * SVG::Graph::Plot
48 # * SVG::Graph::TimeSeries
48 # * SVG::Graph::TimeSeries
49 #
49 #
50 # == Author
50 # == Author
51 #
51 #
52 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
52 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
53 #
53 #
54 # Copyright 2004 Sean E. Russell
54 # Copyright 2004 Sean E. Russell
55 # This software is available under the Ruby license[LICENSE.txt]
55 # This software is available under the Ruby license[LICENSE.txt]
56 #
56 #
57 class Pie < Graph
57 class Pie < Graph
58 # Defaults are those set by Graph::initialize, and
58 # Defaults are those set by Graph::initialize, and
59 # [show_shadow] true
59 # [show_shadow] true
60 # [shadow_offset] 10
60 # [shadow_offset] 10
61 # [show_data_labels] false
61 # [show_data_labels] false
62 # [show_actual_values] false
62 # [show_actual_values] false
63 # [show_percent] true
63 # [show_percent] true
64 # [show_key_data_labels] true
64 # [show_key_data_labels] true
65 # [show_key_actual_values] true
65 # [show_key_actual_values] true
66 # [show_key_percent] false
66 # [show_key_percent] false
67 # [expanded] false
67 # [expanded] false
68 # [expand_greatest] false
68 # [expand_greatest] false
69 # [expand_gap] 10
69 # [expand_gap] 10
70 # [show_x_labels] false
70 # [show_x_labels] false
71 # [show_y_labels] false
71 # [show_y_labels] false
72 # [datapoint_font_size] 12
72 # [datapoint_font_size] 12
73 def set_defaults
73 def set_defaults
74 init_with(
74 init_with(
75 :show_shadow => true,
75 :show_shadow => true,
76 :shadow_offset => 10,
76 :shadow_offset => 10,
77
77
78 :show_data_labels => false,
78 :show_data_labels => false,
79 :show_actual_values => false,
79 :show_actual_values => false,
80 :show_percent => true,
80 :show_percent => true,
81
81
82 :show_key_data_labels => true,
82 :show_key_data_labels => true,
83 :show_key_actual_values => true,
83 :show_key_actual_values => true,
84 :show_key_percent => false,
84 :show_key_percent => false,
85
85
86 :expanded => false,
86 :expanded => false,
87 :expand_greatest => false,
87 :expand_greatest => false,
88 :expand_gap => 10,
88 :expand_gap => 10,
89
89
90 :show_x_labels => false,
90 :show_x_labels => false,
91 :show_y_labels => false,
91 :show_y_labels => false,
92 :datapoint_font_size => 12
92 :datapoint_font_size => 12
93 )
93 )
94 @data = []
94 @data = []
95 end
95 end
96
96
97 # Adds a data set to the graph.
97 # Adds a data set to the graph.
98 #
98 #
99 # graph.add_data( { :data => [1,2,3,4] } )
99 # graph.add_data( { :data => [1,2,3,4] } )
100 #
100 #
101 # Note that the :title is not necessary. If multiple
101 # Note that the :title is not necessary. If multiple
102 # data sets are added to the graph, the pie chart will
102 # data sets are added to the graph, the pie chart will
103 # display the +sums+ of the data. EG:
103 # display the +sums+ of the data. EG:
104 #
104 #
105 # graph.add_data( { :data => [1,2,3,4] } )
105 # graph.add_data( { :data => [1,2,3,4] } )
106 # graph.add_data( { :data => [2,3,5,9] } )
106 # graph.add_data( { :data => [2,3,5,9] } )
107 #
107 #
108 # is the same as:
108 # is the same as:
109 #
109 #
110 # graph.add_data( { :data => [3,5,8,13] } )
110 # graph.add_data( { :data => [3,5,8,13] } )
111 def add_data arg
111 def add_data arg
112 arg[:data].each_index {|idx|
112 arg[:data].each_index {|idx|
113 @data[idx] = 0 unless @data[idx]
113 @data[idx] = 0 unless @data[idx]
114 @data[idx] += arg[:data][idx]
114 @data[idx] += arg[:data][idx]
115 }
115 }
116 end
116 end
117
117
118 # If true, displays a drop shadow for the chart
118 # If true, displays a drop shadow for the chart
119 attr_accessor :show_shadow
119 attr_accessor :show_shadow
120 # Sets the offset of the shadow from the pie chart
120 # Sets the offset of the shadow from the pie chart
121 attr_accessor :shadow_offset
121 attr_accessor :shadow_offset
122 # If true, display the data labels on the chart
122 # If true, display the data labels on the chart
123 attr_accessor :show_data_labels
123 attr_accessor :show_data_labels
124 # If true, display the actual field values in the data labels
124 # If true, display the actual field values in the data labels
125 attr_accessor :show_actual_values
125 attr_accessor :show_actual_values
126 # If true, display the percentage value of each pie wedge in the data
126 # If true, display the percentage value of each pie wedge in the data
127 # labels
127 # labels
128 attr_accessor :show_percent
128 attr_accessor :show_percent
129 # If true, display the labels in the key
129 # If true, display the labels in the key
130 attr_accessor :show_key_data_labels
130 attr_accessor :show_key_data_labels
131 # If true, display the actual value of the field in the key
131 # If true, display the actual value of the field in the key
132 attr_accessor :show_key_actual_values
132 attr_accessor :show_key_actual_values
133 # If true, display the percentage value of the wedges in the key
133 # If true, display the percentage value of the wedges in the key
134 attr_accessor :show_key_percent
134 attr_accessor :show_key_percent
135 # If true, "explode" the pie (put space between the wedges)
135 # If true, "explode" the pie (put space between the wedges)
136 attr_accessor :expanded
136 attr_accessor :expanded
137 # If true, expand the largest pie wedge
137 # If true, expand the largest pie wedge
138 attr_accessor :expand_greatest
138 attr_accessor :expand_greatest
139 # The amount of space between expanded wedges
139 # The amount of space between expanded wedges
140 attr_accessor :expand_gap
140 attr_accessor :expand_gap
141 # The font size of the data point labels
141 # The font size of the data point labels
142 attr_accessor :datapoint_font_size
142 attr_accessor :datapoint_font_size
143
143
144
144
145 protected
145 protected
146
146
147 def add_defs defs
147 def add_defs defs
148 gradient = defs.add_element( "filter", {
148 gradient = defs.add_element( "filter", {
149 "id"=>"dropshadow",
149 "id"=>"dropshadow",
150 "width" => "1.2",
150 "width" => "1.2",
151 "height" => "1.2",
151 "height" => "1.2",
152 } )
152 } )
153 gradient.add_element( "feGaussianBlur", {
153 gradient.add_element( "feGaussianBlur", {
154 "stdDeviation" => "4",
154 "stdDeviation" => "4",
155 "result" => "blur"
155 "result" => "blur"
156 })
156 })
157 end
157 end
158
158
159 # We don't need the graph
159 # We don't need the graph
160 def draw_graph
160 def draw_graph
161 end
161 end
162
162
163 def get_y_labels
163 def get_y_labels
164 [""]
164 [""]
165 end
165 end
166
166
167 def get_x_labels
167 def get_x_labels
168 [""]
168 [""]
169 end
169 end
170
170
171 def keys
171 def keys
172 total = 0
172 total = 0
173 max_value = 0
173 max_value = 0
174 @data.each {|x| total += x }
174 @data.each {|x| total += x }
175 percent_scale = 100.0 / total
175 percent_scale = 100.0 / total
176 count = -1
176 count = -1
177 a = @config[:fields].collect{ |x|
177 a = @config[:fields].collect{ |x|
178 count += 1
178 count += 1
179 v = @data[count]
179 v = @data[count]
180 perc = show_key_percent ? " "+(v * percent_scale).round.to_s+"%" : ""
180 perc = show_key_percent ? " "+(v * percent_scale).round.to_s+"%" : ""
181 x + " [" + v.to_s + "]" + perc
181 x + " [" + v.to_s + "]" + perc
182 }
182 }
183 end
183 end
184
184
185 RADIANS = Math::PI/180
185 RADIANS = Math::PI/180
186
186
187 def draw_data
187 def draw_data
188 @graph = @root.add_element( "g" )
188 @graph = @root.add_element( "g" )
189 background = @graph.add_element("g")
189 background = @graph.add_element("g")
190 midground = @graph.add_element("g")
190 midground = @graph.add_element("g")
191
191
192 diameter = @graph_height > @graph_width ? @graph_width : @graph_height
192 diameter = @graph_height > @graph_width ? @graph_width : @graph_height
193 diameter -= expand_gap if expanded or expand_greatest
193 diameter -= expand_gap if expanded or expand_greatest
194 diameter -= datapoint_font_size if show_data_labels
194 diameter -= datapoint_font_size if show_data_labels
195 diameter -= 10 if show_shadow
195 diameter -= 10 if show_shadow
196 radius = diameter / 2.0
196 radius = diameter / 2.0
197
197
198 xoff = (width - diameter) / 2
198 xoff = (width - diameter) / 2
199 yoff = (height - @border_bottom - diameter)
199 yoff = (height - @border_bottom - diameter)
200 yoff -= 10 if show_shadow
200 yoff -= 10 if show_shadow
201 @graph.attributes['transform'] = "translate( #{xoff} #{yoff} )"
201 @graph.attributes['transform'] = "translate( #{xoff} #{yoff} )"
202
202
203 wedge_text_pad = 5
203 wedge_text_pad = 5
204 wedge_text_pad = 20 if show_percent and show_data_labels
204 wedge_text_pad = 20 if show_percent and show_data_labels
205
205
206 total = 0
206 total = 0
207 max_value = 0
207 max_value = 0
208 @data.each {|x|
208 @data.each {|x|
209 max_value = max_value < x ? x : max_value
209 max_value = max_value < x ? x : max_value
210 total += x
210 total += x
211 }
211 }
212 percent_scale = 100.0 / total
212 percent_scale = 100.0 / total
213
213
214 prev_percent = 0
214 prev_percent = 0
215 rad_mult = 3.6 * RADIANS
215 rad_mult = 3.6 * RADIANS
216 @config[:fields].each_index { |count|
216 @config[:fields].each_index { |count|
217 value = @data[count]
217 value = @data[count]
218 percent = percent_scale * value
218 percent = percent_scale * value
219
219
220 radians = prev_percent * rad_mult
220 radians = prev_percent * rad_mult
221 x_start = radius+(Math.sin(radians) * radius)
221 x_start = radius+(Math.sin(radians) * radius)
222 y_start = radius-(Math.cos(radians) * radius)
222 y_start = radius-(Math.cos(radians) * radius)
223 radians = (prev_percent+percent) * rad_mult
223 radians = (prev_percent+percent) * rad_mult
224 x_end = radius+(Math.sin(radians) * radius)
224 x_end = radius+(Math.sin(radians) * radius)
225 x_end -= 0.00001 if @data.length == 1
225 x_end -= 0.00001 if @data.length == 1
226 y_end = radius-(Math.cos(radians) * radius)
226 y_end = radius-(Math.cos(radians) * radius)
227 path = "M#{radius},#{radius} L#{x_start},#{y_start} "+
227 path = "M#{radius},#{radius} L#{x_start},#{y_start} "+
228 "A#{radius},#{radius} "+
228 "A#{radius},#{radius} "+
229 "0, #{percent >= 50 ? '1' : '0'},1, "+
229 "0, #{percent >= 50 ? '1' : '0'},1, "+
230 "#{x_end} #{y_end} Z"
230 "#{x_end} #{y_end} Z"
231
231
232
232
233 wedge = @foreground.add_element( "path", {
233 wedge = @foreground.add_element( "path", {
234 "d" => path,
234 "d" => path,
235 "class" => "fill#{count+1}"
235 "class" => "fill#{count+1}"
236 })
236 })
237
237
238 translate = nil
238 translate = nil
239 tx = 0
239 tx = 0
240 ty = 0
240 ty = 0
241 half_percent = prev_percent + percent / 2
241 half_percent = prev_percent + percent / 2
242 radians = half_percent * rad_mult
242 radians = half_percent * rad_mult
243
243
244 if show_shadow
244 if show_shadow
245 shadow = background.add_element( "path", {
245 shadow = background.add_element( "path", {
246 "d" => path,
246 "d" => path,
247 "filter" => "url(#dropshadow)",
247 "filter" => "url(#dropshadow)",
248 "style" => "fill: #ccc; stroke: none;"
248 "style" => "fill: #ccc; stroke: none;"
249 })
249 })
250 clear = midground.add_element( "path", {
250 clear = midground.add_element( "path", {
251 "d" => path,
251 "d" => path,
252 "style" => "fill: #fff; stroke: none;"
252 "style" => "fill: #fff; stroke: none;"
253 })
253 })
254 end
254 end
255
255
256 if expanded or (expand_greatest && value == max_value)
256 if expanded or (expand_greatest && value == max_value)
257 tx = (Math.sin(radians) * expand_gap)
257 tx = (Math.sin(radians) * expand_gap)
258 ty = -(Math.cos(radians) * expand_gap)
258 ty = -(Math.cos(radians) * expand_gap)
259 translate = "translate( #{tx} #{ty} )"
259 translate = "translate( #{tx} #{ty} )"
260 wedge.attributes["transform"] = translate
260 wedge.attributes["transform"] = translate
261 clear.attributes["transform"] = translate if clear
261 clear.attributes["transform"] = translate if clear
262 end
262 end
263
263
264 if show_shadow
264 if show_shadow
265 shadow.attributes["transform"] =
265 shadow.attributes["transform"] =
266 "translate( #{tx+shadow_offset} #{ty+shadow_offset} )"
266 "translate( #{tx+shadow_offset} #{ty+shadow_offset} )"
267 end
267 end
268
268
269 if show_data_labels and value != 0
269 if show_data_labels and value != 0
270 label = ""
270 label = ""
271 label += @config[:fields][count] if show_key_data_labels
271 label += @config[:fields][count] if show_key_data_labels
272 label += " ["+value.to_s+"]" if show_actual_values
272 label += " ["+value.to_s+"]" if show_actual_values
273 label += " "+percent.round.to_s+"%" if show_percent
273 label += " "+percent.round.to_s+"%" if show_percent
274
274
275 msr = Math.sin(radians)
275 msr = Math.sin(radians)
276 mcr = Math.cos(radians)
276 mcr = Math.cos(radians)
277 tx = radius + (msr * radius)
277 tx = radius + (msr * radius)
278 ty = radius -(mcr * radius)
278 ty = radius -(mcr * radius)
279
279
280 if expanded or (expand_greatest && value == max_value)
280 if expanded or (expand_greatest && value == max_value)
281 tx += (msr * expand_gap)
281 tx += (msr * expand_gap)
282 ty -= (mcr * expand_gap)
282 ty -= (mcr * expand_gap)
283 end
283 end
284 @foreground.add_element( "text", {
284 @foreground.add_element( "text", {
285 "x" => tx.to_s,
285 "x" => tx.to_s,
286 "y" => ty.to_s,
286 "y" => ty.to_s,
287 "class" => "dataPointLabel",
287 "class" => "dataPointLabel",
288 "style" => "stroke: #fff; stroke-width: 2;"
288 "style" => "stroke: #fff; stroke-width: 2;"
289 }).text = label.to_s
289 }).text = label.to_s
290 @foreground.add_element( "text", {
290 @foreground.add_element( "text", {
291 "x" => tx.to_s,
291 "x" => tx.to_s,
292 "y" => ty.to_s,
292 "y" => ty.to_s,
293 "class" => "dataPointLabel",
293 "class" => "dataPointLabel",
294 }).text = label.to_s
294 }).text = label.to_s
295 end
295 end
296
296
297 prev_percent += percent
297 prev_percent += percent
298 }
298 }
299 end
299 end
300
300
301
301
302 def round val, to
302 def round val, to
303 up = 10**to.to_f
303 up = 10**to.to_f
304 (val * up).to_i / up
304 (val * up).to_i / up
305 end
305 end
306
306
307
307
308 def get_css
308 def get_css
309 return <<EOL
309 return <<EOL
310 .dataPointLabel{
310 .dataPointLabel{
311 fill: #000000;
311 fill: #000000;
312 text-anchor:middle;
312 text-anchor:middle;
313 font-size: #{datapoint_font_size}px;
313 font-size: #{datapoint_font_size}px;
314 font-family: "Arial", sans-serif;
314 font-family: "Arial", sans-serif;
315 font-weight: normal;
315 font-weight: normal;
316 }
316 }
317
317
318 /* key - MUST match fill styles */
318 /* key - MUST match fill styles */
319 .key1,.fill1{
319 .key1,.fill1{
320 fill: #ff0000;
320 fill: #ff0000;
321 fill-opacity: 0.7;
321 fill-opacity: 0.7;
322 stroke: none;
322 stroke: none;
323 stroke-width: 1px;
323 stroke-width: 1px;
324 }
324 }
325 .key2,.fill2{
325 .key2,.fill2{
326 fill: #0000ff;
326 fill: #0000ff;
327 fill-opacity: 0.7;
327 fill-opacity: 0.7;
328 stroke: none;
328 stroke: none;
329 stroke-width: 1px;
329 stroke-width: 1px;
330 }
330 }
331 .key3,.fill3{
331 .key3,.fill3{
332 fill-opacity: 0.7;
332 fill-opacity: 0.7;
333 fill: #00ff00;
333 fill: #00ff00;
334 stroke: none;
334 stroke: none;
335 stroke-width: 1px;
335 stroke-width: 1px;
336 }
336 }
337 .key4,.fill4{
337 .key4,.fill4{
338 fill-opacity: 0.7;
338 fill-opacity: 0.7;
339 fill: #ffcc00;
339 fill: #ffcc00;
340 stroke: none;
340 stroke: none;
341 stroke-width: 1px;
341 stroke-width: 1px;
342 }
342 }
343 .key5,.fill5{
343 .key5,.fill5{
344 fill-opacity: 0.7;
344 fill-opacity: 0.7;
345 fill: #00ccff;
345 fill: #00ccff;
346 stroke: none;
346 stroke: none;
347 stroke-width: 1px;
347 stroke-width: 1px;
348 }
348 }
349 .key6,.fill6{
349 .key6,.fill6{
350 fill-opacity: 0.7;
350 fill-opacity: 0.7;
351 fill: #ff00ff;
351 fill: #ff00ff;
352 stroke: none;
352 stroke: none;
353 stroke-width: 1px;
353 stroke-width: 1px;
354 }
354 }
355 .key7,.fill7{
355 .key7,.fill7{
356 fill-opacity: 0.7;
356 fill-opacity: 0.7;
357 fill: #00ff99;
357 fill: #00ff99;
358 stroke: none;
358 stroke: none;
359 stroke-width: 1px;
359 stroke-width: 1px;
360 }
360 }
361 .key8,.fill8{
361 .key8,.fill8{
362 fill-opacity: 0.7;
362 fill-opacity: 0.7;
363 fill: #ffff00;
363 fill: #ffff00;
364 stroke: none;
364 stroke: none;
365 stroke-width: 1px;
365 stroke-width: 1px;
366 }
366 }
367 .key9,.fill9{
367 .key9,.fill9{
368 fill-opacity: 0.7;
368 fill-opacity: 0.7;
369 fill: #cc6666;
369 fill: #cc6666;
370 stroke: none;
370 stroke: none;
371 stroke-width: 1px;
371 stroke-width: 1px;
372 }
372 }
373 .key10,.fill10{
373 .key10,.fill10{
374 fill-opacity: 0.7;
374 fill-opacity: 0.7;
375 fill: #663399;
375 fill: #663399;
376 stroke: none;
376 stroke: none;
377 stroke-width: 1px;
377 stroke-width: 1px;
378 }
378 }
379 .key11,.fill11{
379 .key11,.fill11{
380 fill-opacity: 0.7;
380 fill-opacity: 0.7;
381 fill: #339900;
381 fill: #339900;
382 stroke: none;
382 stroke: none;
383 stroke-width: 1px;
383 stroke-width: 1px;
384 }
384 }
385 .key12,.fill12{
385 .key12,.fill12{
386 fill-opacity: 0.7;
386 fill-opacity: 0.7;
387 fill: #9966FF;
387 fill: #9966FF;
388 stroke: none;
388 stroke: none;
389 stroke-width: 1px;
389 stroke-width: 1px;
390 }
390 }
391 EOL
391 EOL
392 end
392 end
393 end
393 end
394 end
394 end
395 end
395 end
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@@ -1,500 +1,500
1 require 'SVG/Graph/Graph'
1 require 'SVG/Graph/Graph'
2
2
3 module SVG
3 module SVG
4 module Graph
4 module Graph
5 # === For creating SVG plots of scalar data
5 # === For creating SVG plots of scalar data
6 #
6 #
7 # = Synopsis
7 # = Synopsis
8 #
8 #
9 # require 'SVG/Graph/Plot'
9 # require 'SVG/Graph/Plot'
10 #
10 #
11 # # Data sets are x,y pairs
11 # # Data sets are x,y pairs
12 # # Note that multiple data sets can differ in length, and that the
12 # # Note that multiple data sets can differ in length, and that the
13 # # data in the datasets needn't be in order; they will be ordered
13 # # data in the datasets needn't be in order; they will be ordered
14 # # by the plot along the X-axis.
14 # # by the plot along the X-axis.
15 # projection = [
15 # projection = [
16 # 6, 11, 0, 5, 18, 7, 1, 11, 13, 9, 1, 2, 19, 0, 3, 13,
16 # 6, 11, 0, 5, 18, 7, 1, 11, 13, 9, 1, 2, 19, 0, 3, 13,
17 # 7, 9
17 # 7, 9
18 # ]
18 # ]
19 # actual = [
19 # actual = [
20 # 0, 18, 8, 15, 9, 4, 18, 14, 10, 2, 11, 6, 14, 12,
20 # 0, 18, 8, 15, 9, 4, 18, 14, 10, 2, 11, 6, 14, 12,
21 # 15, 6, 4, 17, 2, 12
21 # 15, 6, 4, 17, 2, 12
22 # ]
22 # ]
23 #
23 #
24 # graph = SVG::Graph::Plot.new({
24 # graph = SVG::Graph::Plot.new({
25 # :height => 500,
25 # :height => 500,
26 # :width => 300,
26 # :width => 300,
27 # :key => true,
27 # :key => true,
28 # :scale_x_integers => true,
28 # :scale_x_integers => true,
29 # :scale_y_integerrs => true,
29 # :scale_y_integerrs => true,
30 # })
30 # })
31 #
31 #
32 # graph.add_data({
32 # graph.add_data({
33 # :data => projection
33 # :data => projection
34 # :title => 'Projected',
34 # :title => 'Projected',
35 # })
35 # })
36 #
36 #
37 # graph.add_data({
37 # graph.add_data({
38 # :data => actual,
38 # :data => actual,
39 # :title => 'Actual',
39 # :title => 'Actual',
40 # })
40 # })
41 #
41 #
42 # print graph.burn()
42 # print graph.burn()
43 #
43 #
44 # = Description
44 # = Description
45 #
45 #
46 # Produces a graph of scalar data.
46 # Produces a graph of scalar data.
47 #
47 #
48 # This object aims to allow you to easily create high quality
48 # This object aims to allow you to easily create high quality
49 # SVG[http://www.w3c.org/tr/svg] scalar plots. You can either use the
49 # SVG[http://www.w3c.org/tr/svg] scalar plots. You can either use the
50 # default style sheet or supply your own. Either way there are many options
50 # default style sheet or supply your own. Either way there are many options
51 # which can be configured to give you control over how the graph is
51 # which can be configured to give you control over how the graph is
52 # generated - with or without a key, data elements at each point, title,
52 # generated - with or without a key, data elements at each point, title,
53 # subtitle etc.
53 # subtitle etc.
54 #
54 #
55 # = Examples
55 # = Examples
56 #
56 #
57 # http://www.germane-software/repositories/public/SVG/test/plot.rb
57 # http://www.germane-software/repositories/public/SVG/test/plot.rb
58 #
58 #
59 # = Notes
59 # = Notes
60 #
60 #
61 # The default stylesheet handles upto 10 data sets, if you
61 # The default stylesheet handles upto 10 data sets, if you
62 # use more you must create your own stylesheet and add the
62 # use more you must create your own stylesheet and add the
63 # additional settings for the extra data sets. You will know
63 # additional settings for the extra data sets. You will know
64 # if you go over 10 data sets as they will have no style and
64 # if you go over 10 data sets as they will have no style and
65 # be in black.
65 # be in black.
66 #
66 #
67 # Unlike the other types of charts, data sets must contain x,y pairs:
67 # Unlike the other types of charts, data sets must contain x,y pairs:
68 #
68 #
69 # [ 1, 2 ] # A data set with 1 point: (1,2)
69 # [ 1, 2 ] # A data set with 1 point: (1,2)
70 # [ 1,2, 5,6] # A data set with 2 points: (1,2) and (5,6)
70 # [ 1,2, 5,6] # A data set with 2 points: (1,2) and (5,6)
71 #
71 #
72 # = See also
72 # = See also
73 #
73 #
74 # * SVG::Graph::Graph
74 # * SVG::Graph::Graph
75 # * SVG::Graph::BarHorizontal
75 # * SVG::Graph::BarHorizontal
76 # * SVG::Graph::Bar
76 # * SVG::Graph::Bar
77 # * SVG::Graph::Line
77 # * SVG::Graph::Line
78 # * SVG::Graph::Pie
78 # * SVG::Graph::Pie
79 # * SVG::Graph::TimeSeries
79 # * SVG::Graph::TimeSeries
80 #
80 #
81 # == Author
81 # == Author
82 #
82 #
83 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
83 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
84 #
84 #
85 # Copyright 2004 Sean E. Russell
85 # Copyright 2004 Sean E. Russell
86 # This software is available under the Ruby license[LICENSE.txt]
86 # This software is available under the Ruby license[LICENSE.txt]
87 #
87 #
88 class Plot < Graph
88 class Plot < Graph
89
89
90 # In addition to the defaults set by Graph::initialize, sets
90 # In addition to the defaults set by Graph::initialize, sets
91 # [show_data_values] true
91 # [show_data_values] true
92 # [show_data_points] true
92 # [show_data_points] true
93 # [area_fill] false
93 # [area_fill] false
94 # [stacked] false
94 # [stacked] false
95 def set_defaults
95 def set_defaults
96 init_with(
96 init_with(
97 :show_data_values => true,
97 :show_data_values => true,
98 :show_data_points => true,
98 :show_data_points => true,
99 :area_fill => false,
99 :area_fill => false,
100 :stacked => false
100 :stacked => false
101 )
101 )
102 self.top_align = self.right_align = self.top_font = self.right_font = 1
102 self.top_align = self.right_align = self.top_font = self.right_font = 1
103 end
103 end
104
104
105 # Determines the scaling for the X axis divisions.
105 # Determines the scaling for the X axis divisions.
106 #
106 #
107 # graph.scale_x_divisions = 2
107 # graph.scale_x_divisions = 2
108 #
108 #
109 # would cause the graph to attempt to generate labels stepped by 2; EG:
109 # would cause the graph to attempt to generate labels stepped by 2; EG:
110 # 0,2,4,6,8...
110 # 0,2,4,6,8...
111 attr_accessor :scale_x_divisions
111 attr_accessor :scale_x_divisions
112 # Determines the scaling for the Y axis divisions.
112 # Determines the scaling for the Y axis divisions.
113 #
113 #
114 # graph.scale_y_divisions = 0.5
114 # graph.scale_y_divisions = 0.5
115 #
115 #
116 # would cause the graph to attempt to generate labels stepped by 0.5; EG:
116 # would cause the graph to attempt to generate labels stepped by 0.5; EG:
117 # 0, 0.5, 1, 1.5, 2, ...
117 # 0, 0.5, 1, 1.5, 2, ...
118 attr_accessor :scale_y_divisions
118 attr_accessor :scale_y_divisions
119 # Make the X axis labels integers
119 # Make the X axis labels integers
120 attr_accessor :scale_x_integers
120 attr_accessor :scale_x_integers
121 # Make the Y axis labels integers
121 # Make the Y axis labels integers
122 attr_accessor :scale_y_integers
122 attr_accessor :scale_y_integers
123 # Fill the area under the line
123 # Fill the area under the line
124 attr_accessor :area_fill
124 attr_accessor :area_fill
125 # Show a small circle on the graph where the line
125 # Show a small circle on the graph where the line
126 # goes from one point to the next.
126 # goes from one point to the next.
127 attr_accessor :show_data_points
127 attr_accessor :show_data_points
128 # Set the minimum value of the X axis
128 # Set the minimum value of the X axis
129 attr_accessor :min_x_value
129 attr_accessor :min_x_value
130 # Set the minimum value of the Y axis
130 # Set the minimum value of the Y axis
131 attr_accessor :min_y_value
131 attr_accessor :min_y_value
132
132
133
133
134 # Adds data to the plot. The data must be in X,Y pairs; EG
134 # Adds data to the plot. The data must be in X,Y pairs; EG
135 # [ 1, 2 ] # A data set with 1 point: (1,2)
135 # [ 1, 2 ] # A data set with 1 point: (1,2)
136 # [ 1,2, 5,6] # A data set with 2 points: (1,2) and (5,6)
136 # [ 1,2, 5,6] # A data set with 2 points: (1,2) and (5,6)
137 def add_data data
137 def add_data data
138 @data = [] unless @data
138 @data = [] unless @data
139
139
140 raise "No data provided by #{conf.inspect}" unless data[:data] and
140 raise "No data provided by #{conf.inspect}" unless data[:data] and
141 data[:data].kind_of? Array
141 data[:data].kind_of? Array
142 raise "Data supplied must be x,y pairs! "+
142 raise "Data supplied must be x,y pairs! "+
143 "The data provided contained an odd set of "+
143 "The data provided contained an odd set of "+
144 "data points" unless data[:data].length % 2 == 0
144 "data points" unless data[:data].length % 2 == 0
145 return if data[:data].length == 0
145 return if data[:data].length == 0
146
146
147 x = []
147 x = []
148 y = []
148 y = []
149 data[:data].each_index {|i|
149 data[:data].each_index {|i|
150 (i%2 == 0 ? x : y) << data[:data][i]
150 (i%2 == 0 ? x : y) << data[:data][i]
151 }
151 }
152 sort( x, y )
152 sort( x, y )
153 data[:data] = [x,y]
153 data[:data] = [x,y]
154 @data << data
154 @data << data
155 end
155 end
156
156
157
157
158 protected
158 protected
159
159
160 def keys
160 def keys
161 @data.collect{ |x| x[:title] }
161 @data.collect{ |x| x[:title] }
162 end
162 end
163
163
164 def calculate_left_margin
164 def calculate_left_margin
165 super
165 super
166 label_left = get_x_labels[0].to_s.length / 2 * font_size * 0.6
166 label_left = get_x_labels[0].to_s.length / 2 * font_size * 0.6
167 @border_left = label_left if label_left > @border_left
167 @border_left = label_left if label_left > @border_left
168 end
168 end
169
169
170 def calculate_right_margin
170 def calculate_right_margin
171 super
171 super
172 label_right = get_x_labels[-1].to_s.length / 2 * font_size * 0.6
172 label_right = get_x_labels[-1].to_s.length / 2 * font_size * 0.6
173 @border_right = label_right if label_right > @border_right
173 @border_right = label_right if label_right > @border_right
174 end
174 end
175
175
176
176
177 X = 0
177 X = 0
178 Y = 1
178 Y = 1
179 def x_range
179 def x_range
180 max_value = @data.collect{|x| x[:data][X][-1] }.max
180 max_value = @data.collect{|x| x[:data][X][-1] }.max
181 min_value = @data.collect{|x| x[:data][X][0] }.min
181 min_value = @data.collect{|x| x[:data][X][0] }.min
182 min_value = min_value<min_x_value ? min_value : min_x_value if min_x_value
182 min_value = min_value<min_x_value ? min_value : min_x_value if min_x_value
183
183
184 range = max_value - min_value
184 range = max_value - min_value
185 right_pad = range == 0 ? 10 : range / 20.0
185 right_pad = range == 0 ? 10 : range / 20.0
186 scale_range = (max_value + right_pad) - min_value
186 scale_range = (max_value + right_pad) - min_value
187
187
188 scale_division = scale_x_divisions || (scale_range / 10.0)
188 scale_division = scale_x_divisions || (scale_range / 10.0)
189
189
190 if scale_x_integers
190 if scale_x_integers
191 scale_division = scale_division < 1 ? 1 : scale_division.round
191 scale_division = scale_division < 1 ? 1 : scale_division.round
192 end
192 end
193
193
194 [min_value, max_value, scale_division]
194 [min_value, max_value, scale_division]
195 end
195 end
196
196
197 def get_x_values
197 def get_x_values
198 min_value, max_value, scale_division = x_range
198 min_value, max_value, scale_division = x_range
199 rv = []
199 rv = []
200 min_value.step( max_value, scale_division ) {|v| rv << v}
200 min_value.step( max_value, scale_division ) {|v| rv << v}
201 return rv
201 return rv
202 end
202 end
203 alias :get_x_labels :get_x_values
203 alias :get_x_labels :get_x_values
204
204
205 def field_width
205 def field_width
206 values = get_x_values
206 values = get_x_values
207 max = @data.collect{|x| x[:data][X][-1]}.max
207 max = @data.collect{|x| x[:data][X][-1]}.max
208 dx = (max - values[-1]).to_f / (values[-1] - values[-2])
208 dx = (max - values[-1]).to_f / (values[-1] - values[-2])
209 (@graph_width.to_f - font_size*2*right_font) /
209 (@graph_width.to_f - font_size*2*right_font) /
210 (values.length + dx - right_align)
210 (values.length + dx - right_align)
211 end
211 end
212
212
213
213
214 def y_range
214 def y_range
215 max_value = @data.collect{|x| x[:data][Y].max }.max
215 max_value = @data.collect{|x| x[:data][Y].max }.max
216 min_value = @data.collect{|x| x[:data][Y].min }.min
216 min_value = @data.collect{|x| x[:data][Y].min }.min
217 min_value = min_value<min_y_value ? min_value : min_y_value if min_y_value
217 min_value = min_value<min_y_value ? min_value : min_y_value if min_y_value
218
218
219 range = max_value - min_value
219 range = max_value - min_value
220 top_pad = range == 0 ? 10 : range / 20.0
220 top_pad = range == 0 ? 10 : range / 20.0
221 scale_range = (max_value + top_pad) - min_value
221 scale_range = (max_value + top_pad) - min_value
222
222
223 scale_division = scale_y_divisions || (scale_range / 10.0)
223 scale_division = scale_y_divisions || (scale_range / 10.0)
224
224
225 if scale_y_integers
225 if scale_y_integers
226 scale_division = scale_division < 1 ? 1 : scale_division.round
226 scale_division = scale_division < 1 ? 1 : scale_division.round
227 end
227 end
228
228
229 return [min_value, max_value, scale_division]
229 return [min_value, max_value, scale_division]
230 end
230 end
231
231
232 def get_y_values
232 def get_y_values
233 min_value, max_value, scale_division = y_range
233 min_value, max_value, scale_division = y_range
234 rv = []
234 rv = []
235 min_value.step( max_value, scale_division ) {|v| rv << v}
235 min_value.step( max_value, scale_division ) {|v| rv << v}
236 return rv
236 return rv
237 end
237 end
238 alias :get_y_labels :get_y_values
238 alias :get_y_labels :get_y_values
239
239
240 def field_height
240 def field_height
241 values = get_y_values
241 values = get_y_values
242 max = @data.collect{|x| x[:data][Y].max }.max
242 max = @data.collect{|x| x[:data][Y].max }.max
243 if values.length == 1
243 if values.length == 1
244 dx = values[-1]
244 dx = values[-1]
245 else
245 else
246 dx = (max - values[-1]).to_f / (values[-1] - values[-2])
246 dx = (max - values[-1]).to_f / (values[-1] - values[-2])
247 end
247 end
248 (@graph_height.to_f - font_size*2*top_font) /
248 (@graph_height.to_f - font_size*2*top_font) /
249 (values.length + dx - top_align)
249 (values.length + dx - top_align)
250 end
250 end
251
251
252 def draw_data
252 def draw_data
253 line = 1
253 line = 1
254
254
255 x_min, x_max, x_div = x_range
255 x_min, x_max, x_div = x_range
256 y_min, y_max, y_div = y_range
256 y_min, y_max, y_div = y_range
257 x_step = (@graph_width.to_f - font_size*2) / (x_max-x_min)
257 x_step = (@graph_width.to_f - font_size*2) / (x_max-x_min)
258 y_step = (@graph_height.to_f - font_size*2) / (y_max-y_min)
258 y_step = (@graph_height.to_f - font_size*2) / (y_max-y_min)
259
259
260 for data in @data
260 for data in @data
261 x_points = data[:data][X]
261 x_points = data[:data][X]
262 y_points = data[:data][Y]
262 y_points = data[:data][Y]
263
263
264 lpath = "L"
264 lpath = "L"
265 x_start = 0
265 x_start = 0
266 y_start = 0
266 y_start = 0
267 x_points.each_index { |idx|
267 x_points.each_index { |idx|
268 x = (x_points[idx] - x_min) * x_step
268 x = (x_points[idx] - x_min) * x_step
269 y = @graph_height - (y_points[idx] - y_min) * y_step
269 y = @graph_height - (y_points[idx] - y_min) * y_step
270 x_start, y_start = x,y if idx == 0
270 x_start, y_start = x,y if idx == 0
271 lpath << "#{x} #{y} "
271 lpath << "#{x} #{y} "
272 }
272 }
273
273
274 if area_fill
274 if area_fill
275 @graph.add_element( "path", {
275 @graph.add_element( "path", {
276 "d" => "M#{x_start} #@graph_height #{lpath} V#@graph_height Z",
276 "d" => "M#{x_start} #@graph_height #{lpath} V#@graph_height Z",
277 "class" => "fill#{line}"
277 "class" => "fill#{line}"
278 })
278 })
279 end
279 end
280
280
281 @graph.add_element( "path", {
281 @graph.add_element( "path", {
282 "d" => "M#{x_start} #{y_start} #{lpath}",
282 "d" => "M#{x_start} #{y_start} #{lpath}",
283 "class" => "line#{line}"
283 "class" => "line#{line}"
284 })
284 })
285
285
286 if show_data_points || show_data_values
286 if show_data_points || show_data_values
287 x_points.each_index { |idx|
287 x_points.each_index { |idx|
288 x = (x_points[idx] - x_min) * x_step
288 x = (x_points[idx] - x_min) * x_step
289 y = @graph_height - (y_points[idx] - y_min) * y_step
289 y = @graph_height - (y_points[idx] - y_min) * y_step
290 if show_data_points
290 if show_data_points
291 @graph.add_element( "circle", {
291 @graph.add_element( "circle", {
292 "cx" => x.to_s,
292 "cx" => x.to_s,
293 "cy" => y.to_s,
293 "cy" => y.to_s,
294 "r" => "2.5",
294 "r" => "2.5",
295 "class" => "dataPoint#{line}"
295 "class" => "dataPoint#{line}"
296 })
296 })
297 add_popup(x, y, format( x_points[idx], y_points[idx] )) if add_popups
297 add_popup(x, y, format( x_points[idx], y_points[idx] )) if add_popups
298 end
298 end
299 make_datapoint_text( x, y-6, y_points[idx] ) if show_data_values
299 make_datapoint_text( x, y-6, y_points[idx] ) if show_data_values
300 }
300 }
301 end
301 end
302 line += 1
302 line += 1
303 end
303 end
304 end
304 end
305
305
306 def format x, y
306 def format x, y
307 "(#{(x * 100).to_i / 100}, #{(y * 100).to_i / 100})"
307 "(#{(x * 100).to_i / 100}, #{(y * 100).to_i / 100})"
308 end
308 end
309
309
310 def get_css
310 def get_css
311 return <<EOL
311 return <<EOL
312 /* default line styles */
312 /* default line styles */
313 .line1{
313 .line1{
314 fill: none;
314 fill: none;
315 stroke: #ff0000;
315 stroke: #ff0000;
316 stroke-width: 1px;
316 stroke-width: 1px;
317 }
317 }
318 .line2{
318 .line2{
319 fill: none;
319 fill: none;
320 stroke: #0000ff;
320 stroke: #0000ff;
321 stroke-width: 1px;
321 stroke-width: 1px;
322 }
322 }
323 .line3{
323 .line3{
324 fill: none;
324 fill: none;
325 stroke: #00ff00;
325 stroke: #00ff00;
326 stroke-width: 1px;
326 stroke-width: 1px;
327 }
327 }
328 .line4{
328 .line4{
329 fill: none;
329 fill: none;
330 stroke: #ffcc00;
330 stroke: #ffcc00;
331 stroke-width: 1px;
331 stroke-width: 1px;
332 }
332 }
333 .line5{
333 .line5{
334 fill: none;
334 fill: none;
335 stroke: #00ccff;
335 stroke: #00ccff;
336 stroke-width: 1px;
336 stroke-width: 1px;
337 }
337 }
338 .line6{
338 .line6{
339 fill: none;
339 fill: none;
340 stroke: #ff00ff;
340 stroke: #ff00ff;
341 stroke-width: 1px;
341 stroke-width: 1px;
342 }
342 }
343 .line7{
343 .line7{
344 fill: none;
344 fill: none;
345 stroke: #00ffff;
345 stroke: #00ffff;
346 stroke-width: 1px;
346 stroke-width: 1px;
347 }
347 }
348 .line8{
348 .line8{
349 fill: none;
349 fill: none;
350 stroke: #ffff00;
350 stroke: #ffff00;
351 stroke-width: 1px;
351 stroke-width: 1px;
352 }
352 }
353 .line9{
353 .line9{
354 fill: none;
354 fill: none;
355 stroke: #ccc6666;
355 stroke: #ccc6666;
356 stroke-width: 1px;
356 stroke-width: 1px;
357 }
357 }
358 .line10{
358 .line10{
359 fill: none;
359 fill: none;
360 stroke: #663399;
360 stroke: #663399;
361 stroke-width: 1px;
361 stroke-width: 1px;
362 }
362 }
363 .line11{
363 .line11{
364 fill: none;
364 fill: none;
365 stroke: #339900;
365 stroke: #339900;
366 stroke-width: 1px;
366 stroke-width: 1px;
367 }
367 }
368 .line12{
368 .line12{
369 fill: none;
369 fill: none;
370 stroke: #9966FF;
370 stroke: #9966FF;
371 stroke-width: 1px;
371 stroke-width: 1px;
372 }
372 }
373 /* default fill styles */
373 /* default fill styles */
374 .fill1{
374 .fill1{
375 fill: #cc0000;
375 fill: #cc0000;
376 fill-opacity: 0.2;
376 fill-opacity: 0.2;
377 stroke: none;
377 stroke: none;
378 }
378 }
379 .fill2{
379 .fill2{
380 fill: #0000cc;
380 fill: #0000cc;
381 fill-opacity: 0.2;
381 fill-opacity: 0.2;
382 stroke: none;
382 stroke: none;
383 }
383 }
384 .fill3{
384 .fill3{
385 fill: #00cc00;
385 fill: #00cc00;
386 fill-opacity: 0.2;
386 fill-opacity: 0.2;
387 stroke: none;
387 stroke: none;
388 }
388 }
389 .fill4{
389 .fill4{
390 fill: #ffcc00;
390 fill: #ffcc00;
391 fill-opacity: 0.2;
391 fill-opacity: 0.2;
392 stroke: none;
392 stroke: none;
393 }
393 }
394 .fill5{
394 .fill5{
395 fill: #00ccff;
395 fill: #00ccff;
396 fill-opacity: 0.2;
396 fill-opacity: 0.2;
397 stroke: none;
397 stroke: none;
398 }
398 }
399 .fill6{
399 .fill6{
400 fill: #ff00ff;
400 fill: #ff00ff;
401 fill-opacity: 0.2;
401 fill-opacity: 0.2;
402 stroke: none;
402 stroke: none;
403 }
403 }
404 .fill7{
404 .fill7{
405 fill: #00ffff;
405 fill: #00ffff;
406 fill-opacity: 0.2;
406 fill-opacity: 0.2;
407 stroke: none;
407 stroke: none;
408 }
408 }
409 .fill8{
409 .fill8{
410 fill: #ffff00;
410 fill: #ffff00;
411 fill-opacity: 0.2;
411 fill-opacity: 0.2;
412 stroke: none;
412 stroke: none;
413 }
413 }
414 .fill9{
414 .fill9{
415 fill: #cc6666;
415 fill: #cc6666;
416 fill-opacity: 0.2;
416 fill-opacity: 0.2;
417 stroke: none;
417 stroke: none;
418 }
418 }
419 .fill10{
419 .fill10{
420 fill: #663399;
420 fill: #663399;
421 fill-opacity: 0.2;
421 fill-opacity: 0.2;
422 stroke: none;
422 stroke: none;
423 }
423 }
424 .fill11{
424 .fill11{
425 fill: #339900;
425 fill: #339900;
426 fill-opacity: 0.2;
426 fill-opacity: 0.2;
427 stroke: none;
427 stroke: none;
428 }
428 }
429 .fill12{
429 .fill12{
430 fill: #9966FF;
430 fill: #9966FF;
431 fill-opacity: 0.2;
431 fill-opacity: 0.2;
432 stroke: none;
432 stroke: none;
433 }
433 }
434 /* default line styles */
434 /* default line styles */
435 .key1,.dataPoint1{
435 .key1,.dataPoint1{
436 fill: #ff0000;
436 fill: #ff0000;
437 stroke: none;
437 stroke: none;
438 stroke-width: 1px;
438 stroke-width: 1px;
439 }
439 }
440 .key2,.dataPoint2{
440 .key2,.dataPoint2{
441 fill: #0000ff;
441 fill: #0000ff;
442 stroke: none;
442 stroke: none;
443 stroke-width: 1px;
443 stroke-width: 1px;
444 }
444 }
445 .key3,.dataPoint3{
445 .key3,.dataPoint3{
446 fill: #00ff00;
446 fill: #00ff00;
447 stroke: none;
447 stroke: none;
448 stroke-width: 1px;
448 stroke-width: 1px;
449 }
449 }
450 .key4,.dataPoint4{
450 .key4,.dataPoint4{
451 fill: #ffcc00;
451 fill: #ffcc00;
452 stroke: none;
452 stroke: none;
453 stroke-width: 1px;
453 stroke-width: 1px;
454 }
454 }
455 .key5,.dataPoint5{
455 .key5,.dataPoint5{
456 fill: #00ccff;
456 fill: #00ccff;
457 stroke: none;
457 stroke: none;
458 stroke-width: 1px;
458 stroke-width: 1px;
459 }
459 }
460 .key6,.dataPoint6{
460 .key6,.dataPoint6{
461 fill: #ff00ff;
461 fill: #ff00ff;
462 stroke: none;
462 stroke: none;
463 stroke-width: 1px;
463 stroke-width: 1px;
464 }
464 }
465 .key7,.dataPoint7{
465 .key7,.dataPoint7{
466 fill: #00ffff;
466 fill: #00ffff;
467 stroke: none;
467 stroke: none;
468 stroke-width: 1px;
468 stroke-width: 1px;
469 }
469 }
470 .key8,.dataPoint8{
470 .key8,.dataPoint8{
471 fill: #ffff00;
471 fill: #ffff00;
472 stroke: none;
472 stroke: none;
473 stroke-width: 1px;
473 stroke-width: 1px;
474 }
474 }
475 .key9,.dataPoint9{
475 .key9,.dataPoint9{
476 fill: #cc6666;
476 fill: #cc6666;
477 stroke: none;
477 stroke: none;
478 stroke-width: 1px;
478 stroke-width: 1px;
479 }
479 }
480 .key10,.dataPoint10{
480 .key10,.dataPoint10{
481 fill: #663399;
481 fill: #663399;
482 stroke: none;
482 stroke: none;
483 stroke-width: 1px;
483 stroke-width: 1px;
484 }
484 }
485 .key11,.dataPoint11{
485 .key11,.dataPoint11{
486 fill: #339900;
486 fill: #339900;
487 stroke: none;
487 stroke: none;
488 stroke-width: 1px;
488 stroke-width: 1px;
489 }
489 }
490 .key12,.dataPoint12{
490 .key12,.dataPoint12{
491 fill: #9966FF;
491 fill: #9966FF;
492 stroke: none;
492 stroke: none;
493 stroke-width: 1px;
493 stroke-width: 1px;
494 }
494 }
495 EOL
495 EOL
496 end
496 end
497
497
498 end
498 end
499 end
499 end
500 end
500 end
Show file before | Show file after | Hide comments
@@ -1,238 +1,238
1 require 'SVG/Graph/Plot'
1 require 'SVG/Graph/Plot'
2
2
3 module SVG
3 module SVG
4 module Graph
4 module Graph
5 # === For creating SVG plots of scalar temporal data
5 # === For creating SVG plots of scalar temporal data
6 #
6 #
7 # = Synopsis
7 # = Synopsis
8 #
8 #
9 # require 'SVG/Graph/TimeSeriess'
9 # require 'SVG/Graph/TimeSeriess'
10 #
10 #
11 # # Data sets are x,y pairs
11 # # Data sets are x,y pairs
12 # data1 = ["6/17/72", 11, "1/11/72", 7, "4/13/04 17:31", 11,
12 # data1 = ["6/17/72", 11, "1/11/72", 7, "4/13/04 17:31", 11,
13 # "9/11/01", 9, "9/1/85", 2, "9/1/88", 1, "1/15/95", 13]
13 # "9/11/01", 9, "9/1/85", 2, "9/1/88", 1, "1/15/95", 13]
14 # data2 = ["8/1/73", 18, "3/1/77", 15, "10/1/98", 4,
14 # data2 = ["8/1/73", 18, "3/1/77", 15, "10/1/98", 4,
15 # "5/1/02", 14, "3/1/95", 6, "8/1/91", 12, "12/1/87", 6,
15 # "5/1/02", 14, "3/1/95", 6, "8/1/91", 12, "12/1/87", 6,
16 # "5/1/84", 17, "10/1/80", 12]
16 # "5/1/84", 17, "10/1/80", 12]
17 #
17 #
18 # graph = SVG::Graph::TimeSeries.new( {
18 # graph = SVG::Graph::TimeSeries.new( {
19 # :width => 640,
19 # :width => 640,
20 # :height => 480,
20 # :height => 480,
21 # :graph_title => title,
21 # :graph_title => title,
22 # :show_graph_title => true,
22 # :show_graph_title => true,
23 # :no_css => true,
23 # :no_css => true,
24 # :key => true,
24 # :key => true,
25 # :scale_x_integers => true,
25 # :scale_x_integers => true,
26 # :scale_y_integers => true,
26 # :scale_y_integers => true,
27 # :min_x_value => 0,
27 # :min_x_value => 0,
28 # :min_y_value => 0,
28 # :min_y_value => 0,
29 # :show_data_labels => true,
29 # :show_data_labels => true,
30 # :show_x_guidelines => true,
30 # :show_x_guidelines => true,
31 # :show_x_title => true,
31 # :show_x_title => true,
32 # :x_title => "Time",
32 # :x_title => "Time",
33 # :show_y_title => true,
33 # :show_y_title => true,
34 # :y_title => "Ice Cream Cones",
34 # :y_title => "Ice Cream Cones",
35 # :y_title_text_direction => :bt,
35 # :y_title_text_direction => :bt,
36 # :stagger_x_labels => true,
36 # :stagger_x_labels => true,
37 # :x_label_format => "%m/%d/%y",
37 # :x_label_format => "%m/%d/%y",
38 # })
38 # })
39 #
39 #
40 # graph.add_data({
40 # graph.add_data({
41 # :data => projection
41 # :data => projection
42 # :title => 'Projected',
42 # :title => 'Projected',
43 # })
43 # })
44 #
44 #
45 # graph.add_data({
45 # graph.add_data({
46 # :data => actual,
46 # :data => actual,
47 # :title => 'Actual',
47 # :title => 'Actual',
48 # })
48 # })
49 #
49 #
50 # print graph.burn()
50 # print graph.burn()
51 #
51 #
52 # = Description
52 # = Description
53 #
53 #
54 # Produces a graph of temporal scalar data.
54 # Produces a graph of temporal scalar data.
55 #
55 #
56 # = Examples
56 # = Examples
57 #
57 #
58 # http://www.germane-software/repositories/public/SVG/test/timeseries.rb
58 # http://www.germane-software/repositories/public/SVG/test/timeseries.rb
59 #
59 #
60 # = Notes
60 # = Notes
61 #
61 #
62 # The default stylesheet handles upto 10 data sets, if you
62 # The default stylesheet handles upto 10 data sets, if you
63 # use more you must create your own stylesheet and add the
63 # use more you must create your own stylesheet and add the
64 # additional settings for the extra data sets. You will know
64 # additional settings for the extra data sets. You will know
65 # if you go over 10 data sets as they will have no style and
65 # if you go over 10 data sets as they will have no style and
66 # be in black.
66 # be in black.
67 #
67 #
68 # Unlike the other types of charts, data sets must contain x,y pairs:
68 # Unlike the other types of charts, data sets must contain x,y pairs:
69 #
69 #
70 # [ "12:30", 2 ] # A data set with 1 point: ("12:30",2)
70 # [ "12:30", 2 ] # A data set with 1 point: ("12:30",2)
71 # [ "01:00",2, "14:20",6] # A data set with 2 points: ("01:00",2) and
71 # [ "01:00",2, "14:20",6] # A data set with 2 points: ("01:00",2) and
72 # # ("14:20",6)
72 # # ("14:20",6)
73 #
73 #
74 # Note that multiple data sets within the same chart can differ in length,
74 # Note that multiple data sets within the same chart can differ in length,
75 # and that the data in the datasets needn't be in order; they will be ordered
75 # and that the data in the datasets needn't be in order; they will be ordered
76 # by the plot along the X-axis.
76 # by the plot along the X-axis.
77 #
77 #
78 # The dates must be parseable by ParseDate, but otherwise can be
78 # The dates must be parseable by ParseDate, but otherwise can be
79 # any order of magnitude (seconds within the hour, or years)
79 # any order of magnitude (seconds within the hour, or years)
80 #
80 #
81 # = See also
81 # = See also
82 #
82 #
83 # * SVG::Graph::Graph
83 # * SVG::Graph::Graph
84 # * SVG::Graph::BarHorizontal
84 # * SVG::Graph::BarHorizontal
85 # * SVG::Graph::Bar
85 # * SVG::Graph::Bar
86 # * SVG::Graph::Line
86 # * SVG::Graph::Line
87 # * SVG::Graph::Pie
87 # * SVG::Graph::Pie
88 # * SVG::Graph::Plot
88 # * SVG::Graph::Plot
89 #
89 #
90 # == Author
90 # == Author
91 #
91 #
92 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
92 # Sean E. Russell <serATgermaneHYPHENsoftwareDOTcom>
93 #
93 #
94 # Copyright 2004 Sean E. Russell
94 # Copyright 2004 Sean E. Russell
95 # This software is available under the Ruby license[LICENSE.txt]
95 # This software is available under the Ruby license[LICENSE.txt]
96 #
96 #
97 class TimeSeries < Plot
97 class TimeSeries < Plot
98 # In addition to the defaults set by Graph::initialize and
98 # In addition to the defaults set by Graph::initialize and
99 # Plot::set_defaults, sets:
99 # Plot::set_defaults, sets:
100 # [x_label_format] '%Y-%m-%d %H:%M:%S'
100 # [x_label_format] '%Y-%m-%d %H:%M:%S'
101 # [popup_format] '%Y-%m-%d %H:%M:%S'
101 # [popup_format] '%Y-%m-%d %H:%M:%S'
102 def set_defaults
102 def set_defaults
103 super
103 super
104 init_with(
104 init_with(
105 #:max_time_span => '',
105 #:max_time_span => '',
106 :x_label_format => '%Y-%m-%d %H:%M:%S',
106 :x_label_format => '%Y-%m-%d %H:%M:%S',
107 :popup_format => '%Y-%m-%d %H:%M:%S'
107 :popup_format => '%Y-%m-%d %H:%M:%S'
108 )
108 )
109 end
109 end
110
110
111 # The format string use do format the X axis labels.
111 # The format string use do format the X axis labels.
112 # See Time::strformat
112 # See Time::strformat
113 attr_accessor :x_label_format
113 attr_accessor :x_label_format
114 # Use this to set the spacing between dates on the axis. The value
114 # Use this to set the spacing between dates on the axis. The value
115 # must be of the form
115 # must be of the form
116 # "\d+ ?(days|weeks|months|years|hours|minutes|seconds)?"
116 # "\d+ ?(days|weeks|months|years|hours|minutes|seconds)?"
117 #
117 #
118 # EG:
118 # EG:
119 #
119 #
120 # graph.timescale_divisions = "2 weeks"
120 # graph.timescale_divisions = "2 weeks"
121 #
121 #
122 # will cause the chart to try to divide the X axis up into segments of
122 # will cause the chart to try to divide the X axis up into segments of
123 # two week periods.
123 # two week periods.
124 attr_accessor :timescale_divisions
124 attr_accessor :timescale_divisions
125 # The formatting used for the popups. See x_label_format
125 # The formatting used for the popups. See x_label_format
126 attr_accessor :popup_format
126 attr_accessor :popup_format
127
127
128 # Add data to the plot.
128 # Add data to the plot.
129 #
129 #
130 # d1 = [ "12:30", 2 ] # A data set with 1 point: ("12:30",2)
130 # d1 = [ "12:30", 2 ] # A data set with 1 point: ("12:30",2)
131 # d2 = [ "01:00",2, "14:20",6] # A data set with 2 points: ("01:00",2) and
131 # d2 = [ "01:00",2, "14:20",6] # A data set with 2 points: ("01:00",2) and
132 # # ("14:20",6)
132 # # ("14:20",6)
133 # graph.add_data(
133 # graph.add_data(
134 # :data => d1,
134 # :data => d1,
135 # :title => 'One'
135 # :title => 'One'
136 # )
136 # )
137 # graph.add_data(
137 # graph.add_data(
138 # :data => d2,
138 # :data => d2,
139 # :title => 'Two'
139 # :title => 'Two'
140 # )
140 # )
141 #
141 #
142 # Note that the data must be in time,value pairs, and that the date format
142 # Note that the data must be in time,value pairs, and that the date format
143 # may be any date that is parseable by ParseDate.
143 # may be any date that is parseable by ParseDate.
144 def add_data data
144 def add_data data
145 @data = [] unless @data
145 @data = [] unless @data
146
146
147 raise "No data provided by #{@data.inspect}" unless data[:data] and
147 raise "No data provided by #{@data.inspect}" unless data[:data] and
148 data[:data].kind_of? Array
148 data[:data].kind_of? Array
149 raise "Data supplied must be x,y pairs! "+
149 raise "Data supplied must be x,y pairs! "+
150 "The data provided contained an odd set of "+
150 "The data provided contained an odd set of "+
151 "data points" unless data[:data].length % 2 == 0
151 "data points" unless data[:data].length % 2 == 0
152 return if data[:data].length == 0
152 return if data[:data].length == 0
153
153
154
154
155 x = []
155 x = []
156 y = []
156 y = []
157 data[:data].each_index {|i|
157 data[:data].each_index {|i|
158 if i%2 == 0
158 if i%2 == 0
159 t = DateTime.parse( data[:data][i] ).to_time
159 t = DateTime.parse( data[:data][i] ).to_time
160 x << t.to_i
160 x << t.to_i
161 else
161 else
162 y << data[:data][i]
162 y << data[:data][i]
163 end
163 end
164 }
164 }
165 sort( x, y )
165 sort( x, y )
166 data[:data] = [x,y]
166 data[:data] = [x,y]
167 @data << data
167 @data << data
168 end
168 end
169
169
170
170
171 protected
171 protected
172
172
173 def min_x_value=(value)
173 def min_x_value=(value)
174 @min_x_value = DateTime.parse( value ).to_time
174 @min_x_value = DateTime.parse( value ).to_time
175 end
175 end
176
176
177
177
178 def format x, y
178 def format x, y
179 Time.at( x ).strftime( popup_format )
179 Time.at( x ).strftime( popup_format )
180 end
180 end
181
181
182 def get_x_labels
182 def get_x_labels
183 get_x_values.collect { |v| Time.at(v).strftime( x_label_format ) }
183 get_x_values.collect { |v| Time.at(v).strftime( x_label_format ) }
184 end
184 end
185
185
186 private
186 private
187 def get_x_values
187 def get_x_values
188 rv = []
188 rv = []
189 min, max, scale_division = x_range
189 min, max, scale_division = x_range
190 if timescale_divisions
190 if timescale_divisions
191 timescale_divisions =~ /(\d+) ?(day|week|month|year|hour|minute|second)?/
191 timescale_divisions =~ /(\d+) ?(day|week|month|year|hour|minute|second)?/
192 division_units = $2 ? $2 : "day"
192 division_units = $2 ? $2 : "day"
193 amount = $1.to_i
193 amount = $1.to_i
194 if amount
194 if amount
195 step = nil
195 step = nil
196 case division_units
196 case division_units
197 when "month"
197 when "month"
198 cur = min
198 cur = min
199 while cur < max
199 while cur < max
200 rv << cur
200 rv << cur
201 arr = Time.at( cur ).to_a
201 arr = Time.at( cur ).to_a
202 arr[4] += amount
202 arr[4] += amount
203 if arr[4] > 12
203 if arr[4] > 12
204 arr[5] += (arr[4] / 12).to_i
204 arr[5] += (arr[4] / 12).to_i
205 arr[4] = (arr[4] % 12)
205 arr[4] = (arr[4] % 12)
206 end
206 end
207 cur = Time.local(*arr).to_i
207 cur = Time.local(*arr).to_i
208 end
208 end
209 when "year"
209 when "year"
210 cur = min
210 cur = min
211 while cur < max
211 while cur < max
212 rv << cur
212 rv << cur
213 arr = Time.at( cur ).to_a
213 arr = Time.at( cur ).to_a
214 arr[5] += amount
214 arr[5] += amount
215 cur = Time.local(*arr).to_i
215 cur = Time.local(*arr).to_i
216 end
216 end
217 when "week"
217 when "week"
218 step = 7 * 24 * 60 * 60 * amount
218 step = 7 * 24 * 60 * 60 * amount
219 when "day"
219 when "day"
220 step = 24 * 60 * 60 * amount
220 step = 24 * 60 * 60 * amount
221 when "hour"
221 when "hour"
222 step = 60 * 60 * amount
222 step = 60 * 60 * amount
223 when "minute"
223 when "minute"
224 step = 60 * amount
224 step = 60 * amount
225 when "second"
225 when "second"
226 step = amount
226 step = amount
227 end
227 end
228 min.step( max, step ) {|v| rv << v} if step
228 min.step( max, step ) {|v| rv << v} if step
229
229
230 return rv
230 return rv
231 end
231 end
232 end
232 end
233 min.step( max, scale_division ) {|v| rv << v}
233 min.step( max, scale_division ) {|v| rv << v}
234 return rv
234 return rv
235 end
235 end
236 end
236 end
237 end
237 end
238 end
238 end
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