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GdalRasterCalc.py
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GdalRasterCalc.py
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# -*- coding: utf-8 -*-
"""
***************************************************************************
GdalRasterCalc.py
---------------------
Date : Janaury 2015
Copyright : (C) 2015 by Giovanni Manghi
Email : giovanni dot manghi at naturalgis dot pt
***************************************************************************
* *
* 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__ = 'Giovanni Manghi'
__date__ = 'January 2015'
__copyright__ = '(C) 2015, Giovanni Manghi'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.core.parameters import ParameterString
from processing.core.parameters import ParameterRaster
from processing.core.parameters import ParameterNumber
from processing.core.parameters import ParameterBoolean
from processing.core.parameters import ParameterSelection
from processing.core.parameters import ParameterExtent
from processing.core.parameters import ParameterCrs
from processing.core.outputs import OutputRaster
from processing.tools.system import isWindows
from processing.algs.gdal.GdalUtils import GdalUtils
class GdalRasterCalc(GdalAlgorithm):
INPUT_A = 'INPUT_A'
INPUT_B = 'INPUT_B'
INPUT_C = 'INPUT_C'
INPUT_D = 'INPUT_D'
INPUT_E = 'INPUT_E'
INPUT_F = 'INPUT_F'
BAND_A = 'BAND_A'
BAND_B = 'BAND_B'
BAND_C = 'BAND_C'
BAND_D = 'BAND_D'
BAND_E = 'BAND_E'
BAND_F = 'BAND_F'
FORMULA = 'FORMULA'
OUTPUT = 'OUTPUT'
NO_DATA = 'NO_DATA'
EXTRA = 'EXTRA'
RTYPE = 'RTYPE'
TYPE = ['Byte', 'Int16', 'UInt16', 'UInt32', 'Int32', 'Float32', 'Float64']
#DEBUG = 'DEBUG'
def defineCharacteristics(self):
self.name = 'GDAL Raster Calculator'
self.group = '[GDAL] Miscellaneous'
self.addParameter(ParameterRaster(self.INPUT_A, self.tr('Input layer A'),
False))
self.addParameter(ParameterString(self.BAND_A,
self.tr('Number of raster band for raster A'), '1', optional=True))
self.addParameter(ParameterRaster(self.INPUT_B, self.tr('Input layer B'),
True))
self.addParameter(ParameterString(self.BAND_B,
self.tr('Number of raster band for raster B'), '1', optional=True))
self.addParameter(ParameterRaster(self.INPUT_C, self.tr('Input layer C'),
True))
self.addParameter(ParameterString(self.BAND_C,
self.tr('Number of raster band for raster C'), '1', optional=True))
self.addParameter(ParameterRaster(self.INPUT_D, self.tr('Input layer D'),
True))
self.addParameter(ParameterString(self.BAND_D,
self.tr('Number of raster band for raster D'), '1', optional=True))
self.addParameter(ParameterRaster(self.INPUT_E, self.tr('Input layer E'),
True))
self.addParameter(ParameterString(self.BAND_E,
self.tr('Number of raster band for raster E'), '1', optional=True))
self.addParameter(ParameterRaster(self.INPUT_F, self.tr('Input layer F'),
True))
self.addParameter(ParameterString(self.BAND_F,
self.tr('Number of raster band for raster F'), '1', optional=True))
self.addParameter(ParameterString(self.FORMULA,
self.tr('Calculation in gdalnumeric syntax using +-/* or any numpy array functions (i.e. logical_and())'), 'A*2', optional=False))
self.addParameter(ParameterString(self.NO_DATA,
self.tr("Set output nodata value"),
'-9999'))
self.addParameter(ParameterSelection(self.RTYPE,
self.tr('Output raster type'), self.TYPE, 5))
#self.addParameter(ParameterBoolean(self.DEBUG,
#self.tr('Print debugging information'),
#False))
self.addParameter(ParameterString(self.EXTRA,
self.tr('Additional creation parameters'), '', optional=True))
self.addOutput(OutputRaster(self.OUTPUT, self.tr('Output layer')))
def processAlgorithm(self, progress):
out = self.getOutputValue(self.OUTPUT)
extra = str(self.getParameterValue(self.EXTRA))
#debug = self.getParameterValue(self.DEBUG)
formula = self.getParameterValue(self.FORMULA)
noData = str(self.getParameterValue(self.NO_DATA))
arguments = []
arguments.append('--calc')
arguments.append('"'+formula+'"')
arguments.append('--format')
arguments.append(GdalUtils.getFormatShortNameFromFilename(out))
arguments.append('--type')
arguments.append(self.TYPE[self.getParameterValue(self.RTYPE)])
if len(noData) > 0:
arguments.append('--NoDataValue')
arguments.append(noData)
if len(extra) > 0:
arguments.append(extra)
#if debug is True:
#arguments.append('--debug')
arguments.append('-A')
arguments.append(self.getParameterValue(self.INPUT_A))
if self.getParameterValue(self.BAND_A):
arguments.append('--A_band '+self.getParameterValue(self.BAND_A))
if self.getParameterValue(self.INPUT_B):
arguments.append('-B')
arguments.append(self.getParameterValue(self.INPUT_B))
if self.getParameterValue(self.BAND_B):
arguments.append('--B_band '+self.getParameterValue(self.BAND_B))
if self.getParameterValue(self.INPUT_C):
arguments.append('-C')
arguments.append(self.getParameterValue(self.INPUT_C))
if self.getParameterValue(self.BAND_C):
arguments.append('--C_band '+self.getParameterValue(self.BAND_C))
if self.getParameterValue(self.INPUT_D):
arguments.append('-D')
arguments.append(self.getParameterValue(self.INPUT_D))
if self.getParameterValue(self.BAND_D):
arguments.append('--D_band '+self.getParameterValue(self.BAND_D))
if self.getParameterValue(self.INPUT_E):
arguments.append('-E')
arguments.append(self.getParameterValue(self.INPUT_E))
if self.getParameterValue(self.BAND_E):
arguments.append('--E_band '+self.getParameterValue(self.BAND_E))
if self.getParameterValue(self.INPUT_F):
arguments.append('-F')
arguments.append(self.getParameterValue(self.INPUT_F))
if self.getParameterValue(self.BAND_F):
arguments.append('--F_band '+self.getParameterValue(self.BAND_F))
arguments.append('--outfile')
arguments.append(out)
if isWindows():
GdalUtils.runGdal(['gdal_calc',
GdalUtils.escapeAndJoin(arguments)], progress)
else:
GdalUtils.runGdal(['gdal_calc.py',
GdalUtils.escapeAndJoin(arguments)], progress)