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- """
- ***************************************************************************
- r_statistics.py
- ---------------
- Date : September 2017
- Copyright : (C) 2017 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__ = 'September 2017'
- __copyright__ = '(C) 2017, Médéric Ribreux'
- from qgis.core import QgsProcessingParameterString
- from grassprovider.Grass7Utils import Grass7Utils
- def processCommand(alg, parameters, context, feedback):
- # We had a new "output" parameter
- out = 'output{}'.format(alg.uniqueSuffix)
- p = QgsProcessingParameterString('~output', None, out, False, False)
- alg.addParameter(p)
- # We need to remove all outputs
- alg.processCommand(parameters, context, feedback, True)
- # Then we add a new command for treating results
- calcExpression = 'correctedoutput{}=@{}'.format(
- alg.uniqueSuffix, out)
- command = 'r.mapcalc expression="{}"'.format(calcExpression)
- alg.commands.append(command)
- def processOutputs(alg, parameters, context, feedback):
- createOpt = alg.parameterAsString(parameters, alg.GRASS_RASTER_FORMAT_OPT, context)
- metaOpt = alg.parameterAsString(parameters, alg.GRASS_RASTER_FORMAT_META, context)
- # Export the results from correctedoutput
- grassName = 'correctedoutput{}'.format(alg.uniqueSuffix)
- fileName = alg.parameterAsOutputLayer(
- parameters, 'routput', context)
- outFormat = Grass7Utils.getRasterFormatFromFilename(fileName)
- alg.exportRasterLayer(grassName, fileName, True,
- outFormat, createOpt, metaOpt)
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