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107 lines
4.5 KiB
Python
107 lines
4.5 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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JoinAttributes.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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from sextante.core.SextanteVectorWriter import SextanteVectorWriter
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from sextante.parameters.ParameterTableField import ParameterTableField
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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 sextante.core.GeoAlgorithm import GeoAlgorithm
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from sextante.outputs.OutputVector import OutputVector
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from sextante.parameters.ParameterVector import ParameterVector
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from qgis.core import *
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from PyQt4.QtCore import *
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from PyQt4.QtGui import *
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from sextante.core.QGisLayers import QGisLayers
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class JoinAttributes(GeoAlgorithm):
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OUTPUT_LAYER = "OUTPUT_LAYER"
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INPUT_LAYER = "INPUT_LAYER"
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INPUT_LAYER_2 = "INPUT_LAYER_2"
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TABLE_FIELD = "TABLE_FIELD"
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TABLE_FIELD_2 = "TABLE_FIELD_2"
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def defineCharacteristics(self):
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self.name = "Create new layer with selected features"
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self.group = "Vector general tools"
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self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", ParameterVector.VECTOR_TYPE_ANY, False))
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self.addParameter(ParameterVector(self.INPUT_LAYER_2, "Input layer 2", ParameterVector.VECTOR_TYPE_ANY, False))
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self.addParameter(ParameterTableField(self.TABLE_FIELD, "Table field", self.INPUT_LAYER))
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self.addParameter(ParameterTableField(self.TABLE_FIELD_2, "Table field 2", self.INPUT_LAYER_2))
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self.addOutput(OutputVector(self.OUTPUT_LAYER, "Output layer"))
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def processAlgorithm(self, progress):
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input = self.getParameterValue(self.INPUT_LAYER)
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input2 = self.getParameterValue(self.INPUT_LAYER_2)
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output = self.getOutputFromName(self.OUTPUT_LAYER)
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field = self.getParameterValue(self.TABLE_FIELD)
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field2 = self.getParameterValue(self.TABLE_FIELD_2)
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# Layer 1
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layer = QGisLayers.getObjectFromUri(input)
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provider = layer.dataProvider()
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allAttrs = provider.attributeIndexes()
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provider.select(allAttrs)
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join_field1_index = provider.fieldNameIndex(field)
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# Layer 2
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layer2 = QGisLayers.getObjectFromUri(input2)
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provider2 = layer2.dataProvider()
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allAttrs = provider2.attributeIndexes()
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provider2.select(allAttrs)
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fields2 = provider2.fields()
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join_field2_index = provider2.fieldNameIndex(field2)
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# Output
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outFields = provider.fields()
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for (i, f) in fields2.iteritems():
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f.setName("x_" + f.name())
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outFields[len(outFields)] = f
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writer = output.getVectorWriter(outFields, provider.geometryType(), provider.crs())
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inFeat = QgsFeature()
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inFeat2 = QgsFeature()
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outFeat = QgsFeature()
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# Create output vector layer with additional attribute
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while provider.nextFeature(inFeat):
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inGeom = inFeat.geometry()
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atMap = inFeat.attributeMap()
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join_value1 = atMap[join_field1_index].toString()
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provider2.rewind()
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while provider2.nextFeature(inFeat2):
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atMap2 = inFeat2.attributeMap()
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join_value2 = atMap2[join_field2_index].toString()
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if join_value1 == join_value2:
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# create the new feature
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outFeat.setGeometry(inGeom)
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outFeat.setAttributeMap(atMap)
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l = len(provider.fields())
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for (i, a) in atMap2.iteritems():
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outFeat.addAttribute(l + i, a)
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writer.addFeature(outFeat)
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del writer
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