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