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80 lines
3.0 KiB
Python
80 lines
3.0 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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DropGeometry.py
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--------------
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Date : November 2016
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Copyright : (C) 2016 by Nyall Dawson
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Email : nyall dot dawson at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Nyall Dawson'
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__date__ = 'November 2016'
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__copyright__ = '(C) 2016, Nyall Dawson'
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# This will get replaced with a git SHA1 when you do a git archive323
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__revision__ = '$Format:%H$'
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from qgis.core import (QgsFeatureRequest,
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QgsWkbTypes,
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QgsFeatureSink,
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QgsCoordinateReferenceSystem,
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QgsProcessing,
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QgsProcessingParameterFeatureSource,
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QgsProcessingParameterFeatureSink)
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from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
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class DropGeometry(QgisAlgorithm):
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INPUT = 'INPUT'
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OUTPUT = 'OUTPUT'
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def tags(self):
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return self.tr('remove,drop,delete,geometry,objects').split(',')
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def group(self):
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return self.tr('Vector general tools')
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def __init__(self):
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super().__init__()
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def initAlgorithm(self, config=None):
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self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT, self.tr('Input layer'), [QgsProcessing.TypeVectorPoint, QgsProcessing.TypeVectorLine, QgsProcessing.TypeVectorPolygon]))
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self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT, self.tr('Dropped geometry')))
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def name(self):
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return 'dropgeometries'
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def displayName(self):
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return self.tr('Drop geometries')
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def processAlgorithm(self, parameters, context, feedback):
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source = self.parameterAsSource(parameters, self.INPUT, context)
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(sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT, context,
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source.fields(), QgsWkbTypes.NoGeometry, QgsCoordinateReferenceSystem())
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request = QgsFeatureRequest().setFlags(QgsFeatureRequest.NoGeometry)
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features = source.getFeatures(request)
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total = 100.0 / source.featureCount() if source.featureCount() else 0
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for current, input_feature in enumerate(features):
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if feedback.isCanceled():
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break
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input_feature.clearGeometry()
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sink.addFeature(input_feature, QgsFeatureSink.FastInsert)
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feedback.setProgress(int(current * total))
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return {self.OUTPUT: dest_id}
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