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8d87f35304
The script wrongly returned the path to the second layer rather than the first layer which the selection actually is applied to.
136 lines
5.4 KiB
Python
136 lines
5.4 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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SelectByLocation.py
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---------------------
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Date : August 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf 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__ = 'Victor Olaya'
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__date__ = 'August 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from qgis.core import QGis, QgsGeometry, QgsFeatureRequest
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from processing.core.GeoAlgorithm import GeoAlgorithm
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from processing.core.parameters import ParameterSelection
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from processing.core.parameters import ParameterVector
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from processing.core.parameters import ParameterGeometryPredicate
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from processing.core.outputs import OutputVector
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from processing.tools import dataobjects, vector
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class SelectByLocation(GeoAlgorithm):
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INPUT = 'INPUT'
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INTERSECT = 'INTERSECT'
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PREDICATE = 'PREDICATE'
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METHOD = 'METHOD'
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OUTPUT = 'OUTPUT'
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METHODS = ['creating new selection',
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'adding to current selection',
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'removing from current selection']
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def defineCharacteristics(self):
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self.name = 'Select by location'
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self.group = 'Vector selection tools'
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self.addParameter(ParameterVector(self.INPUT,
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self.tr('Layer to select from'),
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[ParameterVector.VECTOR_TYPE_ANY]))
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self.addParameter(ParameterVector(self.INTERSECT,
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self.tr('Additional layer (intersection layer)'),
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[ParameterVector.VECTOR_TYPE_ANY]))
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self.addParameter(ParameterGeometryPredicate(self.PREDICATE,
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self.tr('Geometric predicate'),
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left=self.INPUT, right=self.INTERSECT))
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self.addParameter(ParameterSelection(self.METHOD,
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self.tr('Modify current selection by'),
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self.METHODS, 0))
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self.addOutput(OutputVector(self.OUTPUT, self.tr('Selection'), True))
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def processAlgorithm(self, progress):
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filename = self.getParameterValue(self.INPUT)
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inputLayer = dataobjects.getObjectFromUri(filename)
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method = self.getParameterValue(self.METHOD)
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filename2 = self.getParameterValue(self.INTERSECT)
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selectLayer = dataobjects.getObjectFromUri(filename2)
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predicates = self.getParameterValue(self.PREDICATE)
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oldSelection = set(inputLayer.selectedFeaturesIds())
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inputLayer.removeSelection()
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index = vector.spatialindex(inputLayer)
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if 'disjoint' in predicates:
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disjoinSet = []
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for feat in vector.features(inputLayer):
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disjoinSet.append(feat.id())
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geom = QgsGeometry()
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selectedSet = []
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current = 0
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features = vector.features(selectLayer)
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total = 100.0 / float(len(features))
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for f in features:
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geom = QgsGeometry(f.geometry())
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intersects = index.intersects(geom.boundingBox())
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for i in intersects:
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request = QgsFeatureRequest().setFilterFid(i)
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feat = inputLayer.getFeatures(request).next()
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tmpGeom = QgsGeometry(feat.geometry())
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res = False
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for predicate in predicates:
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if predicate == 'disjoint':
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if tmpGeom.intersects(geom):
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try:
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disjoinSet.remove(feat.id())
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except:
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pass # already removed
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else:
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if predicate == 'intersects':
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res = tmpGeom.intersects(geom)
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elif predicate == 'contains':
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res = tmpGeom.contains(geom)
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elif predicate == 'equals':
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res = tmpGeom.equals(geom)
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elif predicate == 'touches':
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res = tmpGeom.touches(geom)
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elif predicate == 'overlaps':
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res = tmpGeom.overlaps(geom)
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elif predicate == 'within':
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res = tmpGeom.within(geom)
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elif predicate == 'crosses':
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res = tmpGeom.crosses(geom)
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if res:
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selectedSet.append(feat.id())
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break
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current += 1
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progress.setPercentage(int(current * total))
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if 'disjoint' in predicates:
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selectedSet = selectedSet + disjoinSet
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if method == 1:
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selectedSet = list(oldSelection.union(selectedSet))
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elif method == 2:
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selectedSet = list(oldSelection.difference(selectedSet))
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inputLayer.setSelectedFeatures(selectedSet)
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self.setOutputValue(self.OUTPUT, filename)
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