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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.grass_utils import GrassUtils
def processCommand(alg, parameters, context, feedback):
# We had a new "output" parameter
out = f"output{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 = f"correctedoutput{alg.uniqueSuffix}=@{out}"
command = f'r.mapcalc expression="{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 = f"correctedoutput{alg.uniqueSuffix}"
fileName = alg.parameterAsOutputLayer(parameters, "routput", context)
outFormat = GrassUtils.getRasterFormatFromFilename(fileName)
alg.exportRasterLayer(grassName, fileName, True, outFormat, createOpt, metaOpt)
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