mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-24 00:47:57 -05:00
95 lines
3.7 KiB
Python
95 lines
3.7 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
SplitRGBBands.py
|
|
---------------------
|
|
Date : August 2012
|
|
Copyright : (C) 2012 by Victor Olaya
|
|
Email : volayaf at gmail dot com
|
|
***************************************************************************
|
|
* *
|
|
* 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__ = 'Victor Olaya'
|
|
__date__ = 'August 2012'
|
|
__copyright__ = '(C) 2012, Victor Olaya'
|
|
|
|
import os
|
|
from qgis.core import (QgsProcessingParameterRasterLayer,
|
|
QgsProcessingParameterRasterDestination)
|
|
from processing.tools.system import getTempFilename
|
|
from . import SagaUtils
|
|
from .SagaAlgorithmBase import SagaAlgorithmBase
|
|
|
|
pluginPath = os.path.normpath(os.path.join(
|
|
os.path.split(os.path.dirname(__file__))[0], os.pardir))
|
|
|
|
|
|
class SplitRGBBands(SagaAlgorithmBase):
|
|
INPUT = 'INPUT'
|
|
R = 'R'
|
|
G = 'G'
|
|
B = 'B'
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
|
|
def initAlgorithm(self, config=None):
|
|
self.addParameter(QgsProcessingParameterRasterLayer(self.INPUT, self.tr('Input layer')))
|
|
|
|
self.addParameter(QgsProcessingParameterRasterDestination(self.R, self.tr('Output R band layer')))
|
|
self.addParameter(QgsProcessingParameterRasterDestination(self.G, self.tr('Output G band layer')))
|
|
self.addParameter(QgsProcessingParameterRasterDestination(self.B, self.tr('Output B band layer')))
|
|
|
|
def name(self):
|
|
return 'splitrgbbands'
|
|
|
|
def displayName(self):
|
|
return self.tr('Split RGB bands')
|
|
|
|
def group(self):
|
|
return self.tr('Raster tools')
|
|
|
|
def groupId(self):
|
|
return 'rastertools'
|
|
|
|
def processAlgorithm(self, parameters, context, feedback):
|
|
# TODO: check correct num of bands
|
|
inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
|
|
input = inLayer.source()
|
|
temp = getTempFilename(None).replace('.', '')
|
|
basename = os.path.basename(temp)
|
|
validChars = \
|
|
'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
|
|
safeBasename = ''.join(c for c in basename if c in validChars)
|
|
temp = os.path.join(os.path.dirname(temp), safeBasename)
|
|
|
|
r = self.parameterAsOutputLayer(parameters, self.R, context)
|
|
g = self.parameterAsOutputLayer(parameters, self.G, context)
|
|
b = self.parameterAsOutputLayer(parameters, self.B, context)
|
|
|
|
commands = []
|
|
version = SagaUtils.getInstalledVersion(True)
|
|
trailing = ""
|
|
lib = ""
|
|
commands.append('%sio_gdal 0 -GRIDS "%s" -FILES "%s"' % (lib, temp, input)
|
|
)
|
|
commands.append('%sio_gdal 1 -GRIDS "%s_%s1.sgrd" -FORMAT 1 -TYPE 0 -FILE "%s"' % (lib, temp, trailing, r)
|
|
)
|
|
commands.append('%sio_gdal 1 -GRIDS "%s_%s2.sgrd" -FORMAT 1 -TYPE 0 -FILE "%s"' % (lib, temp, trailing, g)
|
|
)
|
|
commands.append('%sio_gdal 1 -GRIDS "%s_%s3.sgrd" -FORMAT 1 -TYPE 0 -FILE "%s"' % (lib, temp, trailing, b)
|
|
)
|
|
|
|
SagaUtils.createSagaBatchJobFileFromSagaCommands(commands)
|
|
SagaUtils.executeSaga(feedback)
|
|
|
|
return {self.R: r, self.G: g, self.B: b}
|