mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-28 00:17:30 -05:00
87 lines
3.2 KiB
Python
87 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
ClipByExtent.py
|
|
---------------------
|
|
Date : September 2013
|
|
Copyright : (C) 2013 by Alexander Bruy
|
|
Email : alexander bruy 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__ = 'Alexander Bruy'
|
|
__date__ = 'September 2013'
|
|
__copyright__ = '(C) 2013, Alexander Bruy'
|
|
|
|
# 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 ParameterRaster
|
|
from processing.core.parameters import ParameterExtent
|
|
from processing.core.parameters import ParameterString
|
|
from processing.core.outputs import OutputRaster
|
|
|
|
from processing.algs.gdal.GdalUtils import GdalUtils
|
|
|
|
|
|
class ClipByExtent(GdalAlgorithm):
|
|
|
|
INPUT = 'INPUT'
|
|
OUTPUT = 'OUTPUT'
|
|
NO_DATA = 'NO_DATA'
|
|
PROJWIN = 'PROJWIN'
|
|
EXTRA = 'EXTRA'
|
|
|
|
def defineCharacteristics(self):
|
|
self.name = 'Clip raster by extent'
|
|
self.group = '[GDAL] Extraction'
|
|
self.addParameter(ParameterRaster(
|
|
self.INPUT, self.tr('Input layer'), False))
|
|
self.addParameter(ParameterString(self.NO_DATA,
|
|
self.tr("Nodata value, leave blank to take the nodata value from input"),
|
|
''))
|
|
self.addParameter(ParameterExtent(self.PROJWIN, self.tr('Clipping extent')))
|
|
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)
|
|
noData = str(self.getParameterValue(self.NO_DATA))
|
|
projwin = str(self.getParameterValue(self.PROJWIN))
|
|
extra = str(self.getParameterValue(self.EXTRA))
|
|
|
|
arguments = []
|
|
arguments.append('-of')
|
|
arguments.append(GdalUtils.getFormatShortNameFromFilename(out))
|
|
if len(noData) > 0:
|
|
arguments.append('-a_nodata')
|
|
arguments.append(noData)
|
|
|
|
regionCoords = projwin.split(',')
|
|
arguments.append('-projwin')
|
|
arguments.append(regionCoords[0])
|
|
arguments.append(regionCoords[3])
|
|
arguments.append(regionCoords[1])
|
|
arguments.append(regionCoords[2])
|
|
|
|
if len(extra) > 0:
|
|
arguments.append(extra)
|
|
|
|
arguments.append(self.getParameterValue(self.INPUT))
|
|
arguments.append(out)
|
|
|
|
GdalUtils.runGdal(['gdal_translate',
|
|
GdalUtils.escapeAndJoin(arguments)], progress)
|