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55 lines
2.3 KiB
Python
55 lines
2.3 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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r_horizon.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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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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import os
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def checkParameterValuesBeforeExecuting(alg, parameters, context):
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""" Verify if we have the right parameters """
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start = alg.parameterAsDouble(parameters, 'start', context)
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end = alg.parameterAsDouble(parameters, 'end', context)
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step = alg.parameterAsDouble(parameters, 'step', context)
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if start >= end:
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return False, alg.tr("The start position must be inferior to the end position!")
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if step == 0.0:
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return False, alg.tr("The step must be greater than zero!")
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return True, None
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def processOutputs(alg, parameters, context, feedback):
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# There will be as many outputs as the difference between start and end divided by steps
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start = alg.parameterAsDouble(parameters, 'start', context)
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end = alg.parameterAsDouble(parameters, 'end', context)
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step = alg.parameterAsDouble(parameters, 'step', context)
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num = start
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directory = alg.parameterAsString(parameters, 'output', context)
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while num < end:
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grassName = '{}_{}'.format('output{}'.format(alg.uniqueSuffix), int(num))
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fileName = '{}.tif'.format(os.path.join(directory, '{0:0>3}'.format(int(num))))
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alg.exportRasterLayer(grassName, fileName)
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num += step
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