mirror of
https://github.com/qgis/QGIS.git
synced 2025-03-01 00:46:20 -05:00
96 lines
3.8 KiB
Python
96 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
r_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. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__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__ = '$Format:%H$'
|
|
|
|
|
|
def processInputs(alg):
|
|
# We need to import all the bands and color tables of the input raster
|
|
raster = alg.getParameterValue('input')
|
|
if raster in alg.exportedLayers.keys():
|
|
return
|
|
|
|
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 = unicode(alg.getParameterValue(alg.GRASS_REGION_EXTENT_PARAMETER))
|
|
regionCoords = region.split(',')
|
|
command = 'g.region'
|
|
command += ' -a'
|
|
command += ' n=' + unicode(regionCoords[3])
|
|
command += ' s=' + unicode(regionCoords[2])
|
|
command += ' e=' + unicode(regionCoords[1])
|
|
command += ' w=' + unicode(regionCoords[0])
|
|
cellsize = alg.getParameterValue(alg.GRASS_REGION_CELLSIZE_PARAMETER)
|
|
if cellsize:
|
|
command += ' res=' + unicode(cellsize)
|
|
else:
|
|
command += ' res=' + unicode(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 introduce something clever:
|
|
# if the input raster is multiband: export each component directly
|
|
raster = alg.exportedLayers[alg.getParameterValue('input')]
|
|
for color in ['red', 'green', 'blue']:
|
|
alg.exportedLayers[alg.getOutputValue(color)] = color + alg.uniqueSufix
|
|
|
|
commands = ["if [ $(g.list type=rast pattern='{}.*' | wc -l) -eq \"0\" ]; then".format(raster)]
|
|
commands.append(" r.rgb input={} red={} green={} blue={} --overwrite".format(
|
|
raster,
|
|
alg.exportedLayers[alg.getOutputValue('red')],
|
|
alg.exportedLayers[alg.getOutputValue('green')],
|
|
alg.exportedLayers[alg.getOutputValue('blue')]
|
|
))
|
|
commands.append("fi")
|
|
alg.commands.extend(commands)
|
|
|
|
|
|
def processOutputs(alg):
|
|
raster = alg.exportedLayers[alg.getParameterValue('input')]
|
|
commands = ["if [ $(g.list type=rast pattern='{}.*' | wc -l) -eq \"0\" ]; then".format(raster)]
|
|
for color in ['red', 'green', 'blue']:
|
|
commands.append(" r.out.gdal -t input={} output={} createopt=\"TFW=YES,COMPRESS=LZW\" --overwrite".format(
|
|
alg.exportedLayers[alg.getOutputValue(color)],
|
|
alg.getOutputValue(color)
|
|
))
|
|
commands.append("else")
|
|
for color in ['red', 'green', 'blue']:
|
|
commands.append(" r.out.gdal -t input={} output={} createopt=\"TFW=YES,COMPRESS=LZW\" --overwrite".format(
|
|
'{}.{}'.format(raster, color),
|
|
alg.getOutputValue(color)
|
|
))
|
|
commands.append("fi")
|
|
alg.commands.extend(commands)
|