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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,
QgsProcessingParameterDefinition,
QgsProcessingParameterFeatureSource,
QgsProcessingParameterCrs,
QgsProcessingParameterRasterLayer,
QgsProcessingParameterEnum,
QgsProcessingParameterString,
QgsProcessingParameterNumber,
QgsProcessingParameterExtent,
QgsProcessingParameterBoolean,
QgsProcessingParameterRasterDestination)
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
@ -56,6 +58,9 @@ class ClipRasterByMask(GdalAlgorithm):
KEEP_RESOLUTION = 'KEEP_RESOLUTION'
OPTIONS = 'OPTIONS'
DATA_TYPE = 'DATA_TYPE'
TARGET_EXTENT = 'TARGET_EXTENT'
TARGET_EXTENT_CRS = 'TARGET_EXTENT_CRS'
MULTITHREADING = 'MULTITHREADING'
OUTPUT = 'OUTPUT'
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'),
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,
self.tr('Additional creation options'),
defaultValue='',
@ -164,6 +187,22 @@ class ClipRasterByMask(GdalAlgorithm):
if nodata is not None:
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:
arguments.extend(GdalUtils.parseCreationOptions(options))