mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-31 00:06:02 -04:00
97 lines
3.6 KiB
Python
97 lines
3.6 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
r_blend_rgb.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. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
from builtins import str
|
|
|
|
__author__ = 'Médéric Ribreux'
|
|
__date__ = 'February 2016'
|
|
__copyright__ = '(C) 2016, Médéric Ribreux'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
from processing.core.outputs import getOutputFromString
|
|
|
|
|
|
def processInputs(alg):
|
|
# If there is another raster to copy categories from
|
|
# we need to import it with r.in.gdal rather than r.external
|
|
first = alg.getParameterValue(u'first')
|
|
second = alg.getParameterValue(u'second')
|
|
if first in list(alg.exportedLayers.keys()) and second in list(alg.exportedLayers.keys()):
|
|
return
|
|
|
|
for raster in [first, second]:
|
|
alg.setSessionProjectionFromLayer(raster, alg.commands)
|
|
|
|
destFilename = alg.getTempFilename()
|
|
alg.exportedLayers[raster] = destFilename
|
|
command = 'r.in.gdal input={} output={} --overwrite -o'.format(raster, destFilename)
|
|
alg.commands.append(command)
|
|
|
|
alg.setSessionProjectionFromProject(alg.commands)
|
|
|
|
region = str(alg.getParameterValue(alg.GRASS_REGION_EXTENT_PARAMETER))
|
|
regionCoords = region.split(',')
|
|
command = 'g.region'
|
|
command += ' -a'
|
|
command += ' n=' + str(regionCoords[3])
|
|
command += ' s=' + str(regionCoords[2])
|
|
command += ' e=' + str(regionCoords[1])
|
|
command += ' w=' + str(regionCoords[0])
|
|
cellsize = alg.getParameterValue(alg.GRASS_REGION_CELLSIZE_PARAMETER)
|
|
if cellsize:
|
|
command += ' res=' + str(cellsize)
|
|
else:
|
|
command += ' res=' + str(alg.getDefaultCellsize())
|
|
alignToResolution = alg.getParameterValue(alg.GRASS_REGION_ALIGN_TO_RESOLUTION)
|
|
if alignToResolution:
|
|
command += ' -a'
|
|
alg.commands.append(command)
|
|
|
|
|
|
def processCommand(alg):
|
|
# We need to remove all outputs
|
|
basename = getOutputFromString('OutputRaster|output|Output basename')
|
|
basename.value = 'output'
|
|
alg.addOutput(basename)
|
|
outputNames = ['output_{}'.format(f) for f in ['red', 'green', 'blue']]
|
|
outputs = [alg.getOutputFromName(f) for f in outputNames]
|
|
for output in outputNames:
|
|
alg.exportedLayers[alg.getOutputValue(output)] = 'output' + alg.uniqueSuffix
|
|
alg.removeOutputFromName(output)
|
|
|
|
alg.processCommand()
|
|
|
|
# And to re-add them
|
|
alg.removeOutputFromName('output')
|
|
for output in outputs:
|
|
alg.addOutput(output)
|
|
|
|
|
|
def processOutputs(alg):
|
|
# Export each color raster
|
|
colors = ['red', 'green', 'blue']
|
|
for color in colors:
|
|
output = alg.getOutputValue('output_{}'.format(color))
|
|
command = "r.out.gdal input={} output=\"{}\" createopt=\"TFW=YES,COMPRESS=LZW\"".format(
|
|
alg.exportedLayers[output] + '.' + color[0], output)
|
|
alg.commands.append(command)
|
|
alg.outputCommands.append(command)
|