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Merge pull request #8445 from NaturalGIS/add_te_paramater_in_gdal_clip_by_mask

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add the -te and -te_srs and -multi parameters to the gdalwarp tool used to clip rasters by mask layers
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Luigi Pirelli 2018-12-04 11:32:52 +01:00 committed by GitHub
commit c39e2b83da
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1 changed files with 39 additions and 0 deletions
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39
python/plugins/processing/algs/gdal/ClipRasterByMask.py
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@ -34,10 +34,12 @@ from qgis.core import (QgsRasterFileWriter,
QgsProcessingException, QgsProcessingException,
QgsProcessingParameterDefinition, QgsProcessingParameterDefinition,
QgsProcessingParameterFeatureSource, QgsProcessingParameterFeatureSource,
QgsProcessingParameterCrs,
QgsProcessingParameterRasterLayer, QgsProcessingParameterRasterLayer,
QgsProcessingParameterEnum, QgsProcessingParameterEnum,
QgsProcessingParameterString, QgsProcessingParameterString,
QgsProcessingParameterNumber, QgsProcessingParameterNumber,
QgsProcessingParameterExtent,
QgsProcessingParameterBoolean, QgsProcessingParameterBoolean,
QgsProcessingParameterRasterDestination) QgsProcessingParameterRasterDestination)
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
@ -56,6 +58,9 @@ class ClipRasterByMask(GdalAlgorithm):
KEEP_RESOLUTION = 'KEEP_RESOLUTION' KEEP_RESOLUTION = 'KEEP_RESOLUTION'
OPTIONS = 'OPTIONS' OPTIONS = 'OPTIONS'
DATA_TYPE = 'DATA_TYPE' DATA_TYPE = 'DATA_TYPE'
TARGET_EXTENT = 'TARGET_EXTENT'
TARGET_EXTENT_CRS = 'TARGET_EXTENT_CRS'
MULTITHREADING = 'MULTITHREADING'
OUTPUT = 'OUTPUT' OUTPUT = 'OUTPUT'
TYPES = ['Use input layer data type', 'Byte', 'Int16', 'UInt16', 'UInt32', 'Int32', 'Float32', 'Float64', 'CInt16', 'CInt32', 'CFloat32', 'CFloat64'] TYPES = ['Use input layer data type', 'Byte', 'Int16', 'UInt16', 'UInt32', 'Int32', 'Float32', 'Float64', 'CInt16', 'CInt32', 'CFloat32', 'CFloat64']
@ -84,6 +89,24 @@ class ClipRasterByMask(GdalAlgorithm):
self.tr('Keep resolution of output raster'), self.tr('Keep resolution of output raster'),
defaultValue=False)) defaultValue=False))
target_extent_param = QgsProcessingParameterExtent(self.TARGET_EXTENT,
self.tr('Georeferenced extents of output file to be created'),
optional=True)
target_extent_param.setFlags(target_extent_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
self.addParameter(target_extent_param)
target_extent_crs_param = QgsProcessingParameterCrs(self.TARGET_EXTENT_CRS,
self.tr('CRS of the target raster extent'),
optional=True)
target_extent_crs_param.setFlags(target_extent_crs_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
self.addParameter(target_extent_crs_param)
multithreading_param = QgsProcessingParameterBoolean(self.MULTITHREADING,
self.tr('Use multithreaded warping implementation'),
defaultValue=False)
multithreading_param.setFlags(multithreading_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced)
self.addParameter(multithreading_param)
options_param = QgsProcessingParameterString(self.OPTIONS, options_param = QgsProcessingParameterString(self.OPTIONS,
self.tr('Additional creation options'), self.tr('Additional creation options'),
defaultValue='', defaultValue='',
@ -164,6 +187,22 @@ class ClipRasterByMask(GdalAlgorithm):
if nodata is not None: if nodata is not None:
arguments.append('-dstnodata {}'.format(nodata)) arguments.append('-dstnodata {}'.format(nodata))
extent = self.parameterAsExtent(parameters, self.TARGET_EXTENT, context)
if not extent.isNull():
arguments.append('-te')
arguments.append(extent.xMinimum())
arguments.append(extent.yMinimum())
arguments.append(extent.xMaximum())
arguments.append(extent.yMaximum())
extentCrs = self.parameterAsCrs(parameters, self.TARGET_EXTENT_CRS, context)
if extentCrs:
arguments.append('-te_srs')
arguments.append(extentCrs.authid())
if self.parameterAsBool(parameters, self.MULTITHREADING, context):
arguments.append('-multi')
if options: if options:
arguments.extend(GdalUtils.parseCreationOptions(options)) arguments.extend(GdalUtils.parseCreationOptions(options))