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[Processing] Add GRASS7 r.reclass inline rules (implements Redmine #5583

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Médéric Ribreux
Médéric Ribreux committed Feb 10, 2016
1 parent 9e0043c commit 43b39efd73cb907a6abd8e89a43a9a37c5fdd7ca
@@ -3,4 +3,5 @@ Creates a new map layer whose category values are based upon a reclassification
Raster (r.*)
ParameterRaster|input|Input raster layer|False
ParameterFile|rules|File containing reclass rules|-
ParameterString|txtrules|Reclass rules text (if rule file not used)|None|True|True
OutputRaster|output|Reclassified
@@ -0,0 +1,50 @@
# -*- coding: utf-8 -*-

"""
***************************************************************************
r_reclass.py
------------
Date : February 2016
Copyright : (C) 2016 by Médéric Ribreux
Email : medspx at medspx dot fr
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""

__author__ = 'Médéric Ribreux'
__date__ = 'February 2016'
__copyright__ = '(C) 2016, Médéric Ribreux'

# This will get replaced with a git SHA1 when you do a git archive

__revision__ = '$Format:%H$'


def checkParameterValuesBeforeExecuting(alg):
""" Verify if we have the right parameters """
if alg.getParameterValue(u'rules') and alg.getParameterValue(u'txtrules'):
return alg.tr("You need to set either a rules file or write directly the rules !")

return None


def processCommand(alg):
""" Handle inline rules """
txtRules = alg.getParameterValue(u'txtrules')
if txtRules:
raster = alg.getParameterValue(u'input')
output = alg.getOutputFromName(u'output')
alg.exportedLayers[output.value] = output.name + alg.uniqueSufix
if raster:
raster = alg.exportedLayers[raster]
command = u"echo \"{}\" | r.reclass input={} rules=- output={} --overwrite".format(
txtRules, raster, output.name + alg.uniqueSufix)
alg.commands.append(command)
else:
alg.processCommand()

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