mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-27 00:33:48 -05:00
101 lines
4.0 KiB
Python
101 lines
4.0 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
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. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__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__ = '$Format:%H$'
|
|
|
|
from sextante.core.GeoAlgorithm import GeoAlgorithm
|
|
from sextante.outputs.OutputVector import OutputVector
|
|
from sextante.parameters.ParameterVector import ParameterVector
|
|
from sextante.parameters.ParameterTableField import ParameterTableField
|
|
from qgis.core import *
|
|
from PyQt4.QtCore import *
|
|
from PyQt4.QtGui import *
|
|
from sextante.core.QGisLayers import QGisLayers
|
|
|
|
|
|
class JoinAttributes(GeoAlgorithm):
|
|
|
|
OUTPUT_LAYER = "OUTPUT_LAYER"
|
|
INPUT_LAYER = "INPUT_LAYER"
|
|
INPUT_LAYER_2 = "INPUT_LAYER_2"
|
|
TABLE_FIELD = "TABLE_FIELD"
|
|
TABLE_FIELD_2 = "TABLE_FIELD_2"
|
|
|
|
def defineCharacteristics(self):
|
|
self.name = "Join attributes table"
|
|
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"))
|
|
|
|
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)
|
|
|
|
# Layer 1
|
|
layer = QGisLayers.getObjectFromUri(input)
|
|
provider = layer.dataProvider()
|
|
joinField1Index = layer.fieldNameIndex(field)
|
|
# Layer 2
|
|
layer2 = QGisLayers.getObjectFromUri(input2)
|
|
provider2 = layer2.dataProvider()
|
|
|
|
joinField2Index = layer2.fieldNameIndex(field2)
|
|
|
|
# Output
|
|
outFields = []
|
|
outFields.extend(provider.fields())
|
|
outFields.extend(provider2.fields())
|
|
|
|
writer = output.getVectorWriter(outFields, provider.geometryType(), layer.crs())
|
|
|
|
inFeat = QgsFeature()
|
|
inFeat2 = QgsFeature()
|
|
outFeat = QgsFeature()
|
|
|
|
# Create output vector layer with additional attribute
|
|
features = QGisLayers.features(layer);
|
|
for inFeat in features:
|
|
inGeom = inFeat.geometry()
|
|
attrs = inFeat.attributes()
|
|
joinValue1 = attrs[joinField1Index].toString()
|
|
features2 = QGisLayers.features(layer2);
|
|
for inFeat2 in features2:
|
|
## Maybe it should cache this entries...
|
|
attrs2 = inFeat2.attributes()
|
|
joinValue2 = attrs2[joinField2Index].toString()
|
|
if joinValue1 == joinValue2:
|
|
# create the new feature
|
|
outFeat.setGeometry(inGeom)
|
|
attrs.extend(attrs2)
|
|
break;
|
|
outFeat.setAttributes(attrs)
|
|
writer.addFeature(outFeat)
|
|
|
|
del writer
|