mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-27 00:33:48 -05:00
155 lines
6.2 KiB
Python
155 lines
6.2 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
ClipByMask.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. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
from builtins import str
|
|
|
|
__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__ = '$Format:%H$'
|
|
|
|
import os
|
|
|
|
from qgis.PyQt.QtGui import QIcon
|
|
|
|
from osgeo import gdal
|
|
|
|
from processing.core.parameters import (ParameterRaster,
|
|
ParameterVector,
|
|
ParameterBoolean,
|
|
ParameterString,
|
|
ParameterSelection)
|
|
|
|
from processing.core.outputs import OutputRaster
|
|
|
|
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
|
|
from processing.algs.gdal.GdalUtils import GdalUtils
|
|
|
|
from processing.tools import dataobjects
|
|
from processing.tools.vector import ogrConnectionString
|
|
|
|
pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
|
|
|
|
|
|
class ClipByMask(GdalAlgorithm):
|
|
|
|
INPUT = 'INPUT'
|
|
OUTPUT = 'OUTPUT'
|
|
NO_DATA = 'NO_DATA'
|
|
MASK = 'MASK'
|
|
ALPHA_BAND = 'ALPHA_BAND'
|
|
CROP_TO_CUTLINE = 'CROP_TO_CUTLINE'
|
|
KEEP_RESOLUTION = 'KEEP_RESOLUTION'
|
|
OPTIONS = 'OPTIONS'
|
|
RTYPE = 'RTYPE'
|
|
TYPE = ['Byte', 'Int16', 'UInt16', 'UInt32', 'Int32', 'Float32', 'Float64']
|
|
|
|
def getIcon(self):
|
|
return QIcon(os.path.join(pluginPath, 'images', 'gdaltools', 'raster-clip.png'))
|
|
|
|
def defineCharacteristics(self):
|
|
self.name, self.i18n_name = self.trAlgorithm('Clip raster by mask layer')
|
|
self.group, self.i18n_group = self.trAlgorithm('Raster extraction')
|
|
|
|
self.addParameter(ParameterRaster(self.INPUT, self.tr('Input layer'), False))
|
|
self.addParameter(ParameterVector(self.MASK, self.tr('Mask layer'),
|
|
[dataobjects.TYPE_VECTOR_POLYGON]))
|
|
self.addParameter(ParameterString(self.NO_DATA,
|
|
self.tr("Nodata value, leave blank to take the nodata value from input"),
|
|
'', optional=True))
|
|
self.addParameter(ParameterBoolean(self.ALPHA_BAND,
|
|
self.tr('Create and output alpha band'),
|
|
False))
|
|
self.addParameter(ParameterBoolean(self.CROP_TO_CUTLINE,
|
|
self.tr('Crop the extent of the target dataset to the extent of the cutline'),
|
|
True))
|
|
self.addParameter(ParameterBoolean(self.KEEP_RESOLUTION,
|
|
self.tr('Keep resolution of output raster'),
|
|
False))
|
|
self.addParameter(ParameterString(self.OPTIONS,
|
|
self.tr('Additional creation options'),
|
|
optional=True,
|
|
metadata={'widget_wrapper': 'processing.algs.gdal.ui.RasterOptionsWidget.RasterOptionsWidgetWrapper'}))
|
|
self.addParameter(ParameterSelection(self.RTYPE,
|
|
self.tr('Output raster type'),
|
|
self.TYPE, 5))
|
|
|
|
self.addOutput(OutputRaster(self.OUTPUT, self.tr('Clipped (mask)')))
|
|
|
|
def getConsoleCommands(self):
|
|
out = self.getOutputValue(self.OUTPUT)
|
|
mask = self.getParameterValue(self.MASK)
|
|
maskLayer = dataobjects.getObjectFromUri(
|
|
self.getParameterValue(self.MASK))
|
|
ogrMask = ogrConnectionString(mask)[1:-1]
|
|
noData = self.getParameterValue(self.NO_DATA)
|
|
opts = self.getParameterValue(self.OPTIONS)
|
|
|
|
if noData is not None:
|
|
noData = str(noData)
|
|
|
|
addAlphaBand = self.getParameterValue(self.ALPHA_BAND)
|
|
cropToCutline = self.getParameterValue(self.CROP_TO_CUTLINE)
|
|
keepResolution = self.getParameterValue(self.KEEP_RESOLUTION)
|
|
|
|
arguments = []
|
|
arguments.append('-ot')
|
|
arguments.append(self.TYPE[self.getParameterValue(self.RTYPE)])
|
|
arguments.append('-q')
|
|
arguments.append('-of')
|
|
arguments.append(GdalUtils.getFormatShortNameFromFilename(out))
|
|
if noData and len(noData) > 0:
|
|
arguments.append('-dstnodata')
|
|
arguments.append(noData)
|
|
|
|
if keepResolution:
|
|
r = gdal.Open(self.getParameterValue(self.INPUT))
|
|
geoTransform = r.GetGeoTransform()
|
|
r = None
|
|
arguments.append('-tr')
|
|
arguments.append(str(geoTransform[1]))
|
|
arguments.append(str(geoTransform[5]))
|
|
arguments.append('-tap')
|
|
|
|
arguments.append('-cutline')
|
|
arguments.append(ogrMask)
|
|
if maskLayer and maskLayer.subsetString() != '':
|
|
arguments.append('-cwhere')
|
|
arguments.append(maskLayer.subsetString())
|
|
|
|
if cropToCutline:
|
|
arguments.append('-crop_to_cutline')
|
|
|
|
if addAlphaBand:
|
|
arguments.append('-dstalpha')
|
|
|
|
if opts:
|
|
arguments.append('-co')
|
|
arguments.append(opts)
|
|
|
|
if GdalUtils.version() in [2010000, 2010100]:
|
|
arguments.append("--config GDALWARP_IGNORE_BAD_CUTLINE YES")
|
|
|
|
arguments.append(self.getParameterValue(self.INPUT))
|
|
arguments.append(out)
|
|
|
|
return ['gdalwarp', GdalUtils.escapeAndJoin(arguments)]
|