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50 lines
2.1 KiB
Python
50 lines
2.1 KiB
Python
"""
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***************************************************************************
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r_statistics.py
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---------------
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Date : September 2017
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Copyright : (C) 2017 by Médéric Ribreux
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Email : medspx at medspx dot fr
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = "Médéric Ribreux"
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__date__ = "September 2017"
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__copyright__ = "(C) 2017, Médéric Ribreux"
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from qgis.core import QgsProcessingParameterString
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from grassprovider.grass_utils import GrassUtils
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def processCommand(alg, parameters, context, feedback):
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# We had a new "output" parameter
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out = f"output{alg.uniqueSuffix}"
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p = QgsProcessingParameterString("~output", None, out, False, False)
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alg.addParameter(p)
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# We need to remove all outputs
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alg.processCommand(parameters, context, feedback, True)
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# Then we add a new command for treating results
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calcExpression = f"correctedoutput{alg.uniqueSuffix}=@{out}"
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command = f'r.mapcalc expression="{calcExpression}"'
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alg.commands.append(command)
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def processOutputs(alg, parameters, context, feedback):
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createOpt = alg.parameterAsString(parameters, alg.GRASS_RASTER_FORMAT_OPT, context)
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metaOpt = alg.parameterAsString(parameters, alg.GRASS_RASTER_FORMAT_META, context)
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# Export the results from correctedoutput
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grassName = f"correctedoutput{alg.uniqueSuffix}"
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fileName = alg.parameterAsOutputLayer(parameters, "routput", context)
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outFormat = GrassUtils.getRasterFormatFromFilename(fileName)
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alg.exportRasterLayer(grassName, fileName, True, outFormat, createOpt, metaOpt)
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