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87 lines
3.1 KiB
Python
87 lines
3.1 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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VectorSplit.py
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---------------------
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Date : September 2014
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Copyright : (C) 2014 by Alexander Bruy
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Email : alexander dot bruy 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__ = 'Alexander Bruy'
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__date__ = 'September 2014'
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__copyright__ = '(C) 2014, Alexander Bruy'
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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 PyQt4.QtCore import *
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from qgis.core import *
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from processing.core.GeoAlgorithm import GeoAlgorithm
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from processing.core.parameters import ParameterVector
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from processing.core.parameters import ParameterTableField
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from processing.core.outputs import OutputDirectory
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from processing.tools import dataobjects, vector
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class VectorSplit(GeoAlgorithm):
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INPUT = 'INPUT'
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FIELD = 'FIELD'
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OUTPUT = 'OUTPUT'
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def defineCharacteristics(self):
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self.name = 'Split vector layer'
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self.group = 'Vector general tools'
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self.addParameter(ParameterVector(self.INPUT,
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'Input layer', [ParameterVector.VECTOR_TYPE_ANY]))
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self.addParameter(ParameterTableField(self.FIELD,
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'Unique ID field', self.INPUT))
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self.addOutput(OutputDirectory(self.OUTPUT, 'Output directory'))
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def processAlgorithm(self, progress):
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layer = dataobjects.getObjectFromUri(
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self.getParameterValue(self.INPUT))
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fieldName = self.getParameterValue(self.FIELD)
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directory = self.getOutputValue(self.OUTPUT)
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if directory.find('\\') != -1:
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directory.replace('\\', '/')
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if not directory.endswith("/"):
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directory += '/'
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fieldIndex = layer.fieldNameIndex(fieldName)
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uniqueValues = vector.uniqueValues(layer, fieldIndex)
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baseName = '{0}{1}_{2}'.format(directory, layer.name(), fieldName)
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fields = layer.pendingFields()
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crs = layer.dataProvider().crs()
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geomType = layer.wkbType()
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total = 100.0 / len(uniqueValues)
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features = vector.features(layer)
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for count, i in enumerate(uniqueValues):
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fName = '{0}_{1}.shp'.format(baseName, unicode(i).strip())
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writer = vector.VectorWriter(fName, None, fields, geomType, crs)
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for f in features:
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if f[fieldName] == i:
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writer.addFeature(f)
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del writer
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progress.setPercentage(int(count * total))
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