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added missing file with JoinAttributes algorithm
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# -*- coding: utf-8 -*- | ||
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""" | ||
*************************************************************************** | ||
JoinAttributes.py | ||
--------------------- | ||
Date : August 2012 | ||
Copyright : (C) 2012 by Victor Olaya | ||
Email : volayaf at gmail dot com | ||
*************************************************************************** | ||
* * | ||
* This program is free software; you can redistribute it and/or modify * | ||
* it under the terms of the GNU General Public License as published by * | ||
* the Free Software Foundation; either version 2 of the License, or * | ||
* (at your option) any later version. * | ||
* * | ||
*************************************************************************** | ||
""" | ||
from sextante.core.SextanteVectorWriter import SextanteVectorWriter | ||
from sextante.parameters.ParameterTableField import ParameterTableField | ||
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__author__ = 'Victor Olaya' | ||
__date__ = 'August 2012' | ||
__copyright__ = '(C) 2012, Victor Olaya' | ||
# This will get replaced with a git SHA1 when you do a git archive | ||
__revision__ = '$Format:%H$' | ||
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from sextante.core.GeoAlgorithm import GeoAlgorithm | ||
from sextante.outputs.OutputVector import OutputVector | ||
from sextante.parameters.ParameterVector import ParameterVector | ||
from qgis.core import * | ||
from PyQt4.QtCore import * | ||
from PyQt4.QtGui import * | ||
from sextante.core.QGisLayers import QGisLayers | ||
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class JoinAttributes(GeoAlgorithm): | ||
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OUTPUT_LAYER = "OUTPUT_LAYER" | ||
INPUT_LAYER = "INPUT_LAYER" | ||
INPUT_LAYER_2 = "INPUT_LAYER_2" | ||
TABLE_FIELD = "TABLE_FIELD" | ||
TABLE_FIELD_2 = "TABLE_FIELD_2" | ||
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def defineCharacteristics(self): | ||
self.name = "Create new layer with selected features" | ||
self.group = "Vector general tools" | ||
self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", ParameterVector.VECTOR_TYPE_ANY, False)) | ||
self.addParameter(ParameterVector(self.INPUT_LAYER_2, "Input layer 2", ParameterVector.VECTOR_TYPE_ANY, False)) | ||
self.addParameter(ParameterTableField(self.TABLE_FIELD, "Table field", self.INPUT_LAYER)) | ||
self.addParameter(ParameterTableField(self.TABLE_FIELD_2, "Table field 2", self.INPUT_LAYER_2)) | ||
self.addOutput(OutputVector(self.OUTPUT_LAYER, "Output layer")) | ||
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def processAlgorithm(self, progress): | ||
input = self.getParameterValue(self.INPUT_LAYER) | ||
input2 = self.getParameterValue(self.INPUT_LAYER_2) | ||
output = self.getOutputFromName(self.OUTPUT_LAYER) | ||
field = self.getParameterValue(self.TABLE_FIELD) | ||
field2 = self.getParameterValue(self.TABLE_FIELD_2) | ||
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# Layer 1 | ||
layer = QGisLayers.getObjectFromUri(input) | ||
provider = layer.dataProvider() | ||
allAttrs = provider.attributeIndexes() | ||
provider.select( allAttrs ) | ||
join_field1_index = provider.fieldNameIndex(field) | ||
# Layer 2 | ||
layer2 = QGisLayers.getObjectFromUri(input2) | ||
provider2 = layer2.dataProvider() | ||
allAttrs = provider2.attributeIndexes() | ||
provider2.select( allAttrs ) | ||
fields2 = provider2.fields() | ||
join_field2_index = provider2.fieldNameIndex(field2) | ||
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# Output | ||
outFields = provider.fields() | ||
for (i,f) in fields2.iteritems(): | ||
f.setName("x_"+f.name()) | ||
outFields[len(outFields)] = f | ||
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writer = output.getVectorWriter(outFields, provider.geometryType(), provider.crs()) | ||
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inFeat = QgsFeature() | ||
inFeat2 = QgsFeature() | ||
outFeat = QgsFeature() | ||
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# Create output vector layer with additional attribute | ||
while provider.nextFeature(inFeat): | ||
inGeom = inFeat.geometry() | ||
atMap = inFeat.attributeMap() | ||
join_value1 = atMap[join_field1_index].toString() | ||
while provider2.nextFeature(inFeat2): | ||
atMap2 = inFeat2.attributeMap() | ||
join_value2 = atMap2[join_field2_index].toString() | ||
if join_value1 == join_value2: | ||
# create the new feature | ||
outFeat.setGeometry( inGeom ) | ||
outFeat.setAttributeMap( atMap ) | ||
l = len(provider.fields()) | ||
for (i,a) in atMap2.iteritems(): | ||
outFeat.addAttribute( l+i, a ) | ||
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writer.addFeature( outFeat ) | ||
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del writer |