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54 lines
2.0 KiB
Python
54 lines
2.0 KiB
Python
"""
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***************************************************************************
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r_null.py
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---------------------
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Date : February 2016
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Copyright : (C) 2016 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__ = "February 2016"
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__copyright__ = "(C) 2016, Médéric Ribreux"
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def checkParameterValuesBeforeExecuting(alg, parameters, context):
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"""Verify if we have the right parameters"""
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if alg.parameterAsString(parameters, "setnull", context) or alg.parameterAsString(
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parameters, "null", context
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):
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return True, None
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return False, alg.tr(
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"You need to set at least 'setnull' or 'null' parameters for this algorithm!"
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)
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def processInputs(alg, parameters, context, feedback):
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"""Prepare the GRASS import commands"""
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if "map" in alg.exportedLayers:
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return
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# We need to import without r.external
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alg.loadRasterLayerFromParameter("map", parameters, context, False)
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alg.postInputs(context)
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def processCommand(alg, parameters, context, feedback):
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# We temporary remove the output 'sequence'
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alg.processCommand(parameters, context, feedback, True)
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def processOutputs(alg, parameters, context, feedback):
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fileName = alg.parameterAsOutputLayer(parameters, "output", context)
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grassName = alg.exportedLayers["map"]
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alg.exportRasterLayer(grassName, fileName, False)
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