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Optionally load backend from environment variable
Optionally load backend from environment variable

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Signal Chain

Introduction

Signal Chain (SCh) is a radar data processing library developed using Python at JRO. SCh provides modules to read, write, process and plot data.

Installation

Install system dependencies, clone the latest version from here and install it as a normal python package.

Linux based system

$ sudo apt-get install python-pip python-dev gfortran libpng-dev freetype* libblas-dev liblapack-dev libatlas-base-dev python-qt4 python-tk libssl-dev libhdf5-dev
$ git clone http://jro-dev.igp.gob.pe/rhodecode/schain/
$ cd schain
$ sudo pip install ./

MAC Os

$ brew install python
$ brew install cartr/qt4/pyqt
$ git clone http://jro-dev.igp.gob.pe/rhodecode/schain/
$ cd schain
$ pip install ./

It is recommended to install schain in a virtual environment

$ virtualenv /path/to/virtual
$ source /path/to/virtual/bin/activate
(virtual) $ cd schain
(virtual) $ pip install ./
(virtual) $ bash link_PyQt4.sh

First Script

Read Spectra data (.pdata) - remove dc - plot spectra & RTI

Import SCh and creating a project

#!/usr/bin/python

from schainpy.controller import Project

controller = Project()
controller.setup(id = '100',
                 name='test',
                 description='Basic experiment')

Adding read unit and operations

read_unit = controller.addReadUnit(datatype='Spectra',
                                   path='/path/to/pdata/',
                                   startDate='2014/01/31',
                                   endDate='2014/03/31',
                                   startTime='00:00:00',
                                   endTime='23:59:59',
                                   online=0,
                                   walk=0)

proc_unit = controller.addProcUnit(datatype='Spectra',
                                   inputId=read_unit.getId())

op = proc_unit.addOperation(name='selectChannels')
op.addParameter(name='channelList', value='0,1', format='intlist')

op = proc_unit.addOperation(name='selectHeights')
op.addParameter(name='minHei', value='80', format='float')
op.addParameter(name='maxHei', value='200', format='float')

op = proc_unit.addOperation(name='removeDC')

Plotting data & start project

op = proc_unit.addOperation(name='SpectraPlot', optype='other')
op.addParameter(name='id', value='1', format='int')
op.addParameter(name='wintitle', value='Spectra', format='str')

op = procUnitConfObj1.addOperation(name='RTIPlot', optype='other')
op.addParameter(name='id', value='2', format='int')
op.addParameter(name='wintitle', value='RTI', format='str')

controller.start()

Full script

#!/usr/bin/python

from schainpy.controller import Project

controller = Project()
controller.setup(id = '100',
                 name='test',
                 description='Basic experiment')
read_unit = controller.addReadUnit(datatype='Spectra',
                                   path='/path/to/pdata/',
                                   startDate='2014/01/31',
                                   endDate='2014/03/31',
                                   startTime='00:00:00',
                                   endTime='23:59:59',
                                   online=0,
                                   walk=0)

proc_unit = controller.addProcUnit(datatype='Spectra',
                                   inputId=read_unit.getId())

op = proc_unit.addOperation(name='selectChannels')
op.addParameter(name='channelList', value='0,1', format='intlist')

op = proc_unit.addOperation(name='selectHeights')
op.addParameter(name='minHei', value='80', format='float')
op.addParameter(name='maxHei', value='200', format='float')

op = proc_unit.addOperation(name='removeDC')

op = proc_unit.addOperation(name='SpectraPlot', optype='other')
op.addParameter(name='id', value='6', format='int')
op.addParameter(name='wintitle', value='Spectra', format='str')

op = procUnitConfObj1.addOperation(name='RTIPlot', optype='other')
op.addParameter(name='id', value='2', format='int')
op.addParameter(name='wintitle', value='RTI', format='str')

controller.start()