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67 lines
2.8 KiB
Python
67 lines
2.8 KiB
Python
from processing.core.RasterWriter import RasterWriter
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from processing.parameters.ParameterRaster import ParameterRaster
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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AutoincrementalField.py
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---------------------
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Date : August 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf at gmail dot com
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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__ = 'Victor Olaya'
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__date__ = 'August 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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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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from processing.core.GeoAlgorithm import GeoAlgorithm
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from PyQt4.QtCore import *
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from qgis.core import *
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from processing.parameters.ParameterNumber import ParameterNumber
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from processing.outputs.OutputRaster import OutputRaster
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from processing.core.QGisLayers import QGisLayers
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class CreateConstantRaster(GeoAlgorithm):
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INPUT = "INPUT"
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OUTPUT = "OUTPUT"
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NUMBER = "NUMBER"
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#===========================================================================
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# def getIcon(self):
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# return QtGui.QIcon(os.path.dirname(__file__) + "/../images/toolbox.png")
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#===========================================================================
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def processAlgorithm(self, progress):
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output = self.getOutputFromName(self.OUTPUT)
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value = self.getOutputValue(self.NUMBER)
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layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
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cellsize = (layer.extent().xMaximum() - layer.extent().xMinimum())/layer.width()
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w = RasterWriter(output.getCompatibleFileName(self), layer.extent().xMinimum(), layer.extent().yMinimum(), layer.extent().xMaximum(),
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layer.extent().yMaximum(), cellsize, 1, self.crs)
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w.matrix[:] = value
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w.close()
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def defineCharacteristics(self):
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self.name = "Create constant raster layer"
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self.group = "Raster tools"
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self.addParameter(ParameterRaster(self.INPUT, "Reference layer"))
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self.addParameter(ParameterNumber(self.NUMBER, "Constant value", default = 1.0));
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self.addOutput(OutputRaster(self.OUTPUT, "Output layer"))
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