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Qgsprocessingfeaturesource

WebApr 14, 2012 · class qgis.core.QgsProcessingFeatureSource (originalSource: QgsFeatureSource, context: QgsProcessingContext, ownsOriginalSource: bool = False) ¶ … WebJan 8, 2013 · Implemented in QgsVectorLayer, QgsProcessingFeatureSource, QgsVectorLayerSelectedFeatureSource, and QgsVectorDataProvider. materialize () Materializes a request (query) made against this feature source, by running it over the source and returning a new memory based vector layer containing the result.

Class: QgsProcessingFeatureSource - QGIS

WebMar 4, 2015 · QgsProcessingFeatureSource * parameterAsSource (const QVariantMap &parameters, const QString &name, QgsProcessingContext &context) const Evaluates the … traditionally defined https://makendatec.com

QgsProcessingFeatureSource Class Reference - QGIS

WebQgsProcessingFeatureSource, NULL) from qgis. PyQt. QtCore import QVariant: from processing. algs. qgis. QgisAlgorithm import QgisAlgorithm: from collections import … WebQGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS) - QGIS/qgsprocessingalgorithm.cpp at master · qgis/QGIS WebMar 4, 2015 · QgsFeatureSource subclass which proxies methods to an underlying QgsFeatureSource, modifying results according to the settings in a … traditionally bob for at halloween parties

QGIS/qgsprocessingalgorithm.cpp at master - Github

Category:qgis - Getting QgsVectorLayer from QgsFeatureSink

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Qgsprocessingfeaturesource

QGIS API Documentation: QgsProcessingAlgorithm Class Reference

WebFeb 17, 2024 · I've then set the filter expression of the QgsFeatureRequest () object and passed attempted to get features as below and getFeatures () should return a … WebMar 4, 2015 · Implemented in QgsVectorLayer, QgsProcessingFeatureSource, QgsVectorLayerSelectedFeatureSource, and QgsVectorDataProvider. The documentation …

Qgsprocessingfeaturesource

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WebDec 15, 2024 · 1 Answer Sorted by: 12 Add QgsProcessingUtils to imports. from qgis.core import QgsProcessingUtils After adding features, use … WebConstructor for QgsProcessingFeatureSource, accepting an original feature source originalSource and processing context. More... ~QgsProcessingFeatureSource override …

WebMar 4, 2015 · QgsFeatureSource subclass which proxies methods to an underlying QgsFeatureSource, modifying results according to the settings in a QgsProcessingContext. Since QGIS 3.0 Definition at line 305 of file qgsprocessingutils.h. Member Enumeration Documentation enum QgsProcessingFeatureSource::Flag WebApr 12, 2024 · Enumerator; TypeMapLayer Any map layer type (raster, vector, mesh, point cloud, annotation or plugin layer) TypeVectorAnyGeometry Any vector layer with geometry.

WebJan 8, 2013 · QgsProcessingFeatureSource* QgsProcessingAlgorithm:: parameterAsSource(const QVariantMap& parameters, const QString& name, … WebMar 21, 2024 · Constructor for QgsProcessingFeatureSource, accepting an original feature source originalSource and processing context.. Ownership of originalSource is dictated by …

WebQgsProcessingFeatureSource (QgsFeatureSource *originalSource, const QgsProcessingContext &context, bool ownsOriginalSource=false, long long featureLimit=-1) Constructor for QgsProcessingFeatureSource , accepting an original feature source originalSource and processing context .

WebJan 8, 2013 · Implemented in QgsVectorLayer, QgsProcessingFeatureSource, QgsVectorLayerSelectedFeatureSource, and QgsVectorDataProvider. materialize () … the sandals silvertoneWebJul 21, 2024 · Constructor for QgsProcessingFeatureSource, accepting an original feature source originalSource and processing context. Ownership of originalSource is dictated by ownsOriginalSource . If ownsOriginalSource is False , ownership is not transferred, and callers must ensure that originalSource exists for the lifetime of this object. traditionally cheapest flights to spain datesWebFeb 17, 2024 · I've then set the filter expression of the QgsFeatureRequest () object and passed attempted to get features as below and getFeatures () should return a QgsFeatureIterator: roadsRequest.setFilterExpression (roadsExpression) roadsFeatures = roadsSource.getFeatures (roadsRequest) the sandalwood restaurant hydenWebMar 4, 2015 · Implemented in QgsVectorLayer, QgsProcessingFeatureSource, QgsVectorLayerSelectedFeatureSource, and QgsVectorDataProvider. Returns the set of unique values contained within the specified fieldIndex from this source. If specified, the limit option can be used to limit the number of returned values. the sandals resorts the bahamasWebMar 4, 2015 · QgsProcessingAlgorithm Class Reference abstract core library Abstract base class for processing algorithms. More... #include < qgsprocessingalgorithm.h > Inheritance diagram for QgsProcessingAlgorithm: [ legend] Detailed Description Abstract base class for processing algorithms. traditionally counties areWebJan 8, 2013 · QgsProcessingFeatureSource* source = nullptr) const -> QgsExpressionContext Creates an expression context relating to the algorithm. auto destinationParameterDefinitions() const -> QgsProcessingParameterDefinitions Returns a list of destination parameters definitions utilized by the algorithm. traditionally cozyWebMar 12, 2024 · It can have any kind of # geometry. self.addParameter ( QgsProcessingParameterFeatureSource ( self.INPUT, self.tr ('Input layer'), [QgsProcessing.TypeVectorAnyGeometry] ) ) # We add a feature sink in which to store our processed features (this # usually takes the form of a newly created vector layer when the … traditionally definition