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6aa10c6817
Ensure that layers created by QgsProcessingUtils::createFeatureSink can always be retrieved using QgsProcessingUtils::mapLayerFromString
29 lines
934 B
Python
29 lines
934 B
Python
##Centroids=name
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##Geometry=group
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##INPUT_LAYER=vector
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##OUTPUT_LAYER=output vector
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from qgis.core import QgsWkbTypes, QgsProcessingUtils
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layer = QgsProcessingUtils.mapLayerFromString(INPUT_LAYER, context)
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fields = layer.fields()
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writer, writer_dest = QgsProcessingUtils.createFeatureSink(OUTPUT_LAYER, 'utf-8', fields, QgsWkbTypes.Point, layer.crs(),
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context)
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features = QgsProcessingUtils.getFeatures(layer, context)
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count = QgsProcessingUtils.featureCount(layer, context)
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if count == 0:
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raise GeoAlgorithmExecutionException('Input layer contains no features.')
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total = 100.0 / count
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for count, f in enumerate(features):
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outputFeature = f
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if f.hasGeometry():
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outputGeometry = f.geometry().centroid()
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outputFeature.setGeometry(outputGeometry)
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writer.addFeature(outputFeature)
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feedback.setProgress(int(count * total))
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