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91 lines
3.1 KiB
Python
91 lines
3.1 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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ReprojectLayer.py
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---------------------
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Date : October 2012
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Copyright : (C) 2012 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__ = 'October 2012'
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__copyright__ = '(C) 2012, 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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import os.path
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from PyQt4 import QtGui
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from PyQt4.QtCore import *
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from qgis.core import *
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from sextante.core.GeoAlgorithm import GeoAlgorithm
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from sextante.core.QGisLayers import QGisLayers
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from sextante.core.SextanteLog import SextanteLog
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from sextante.parameters.ParameterVector import ParameterVector
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from sextante.parameters.ParameterCrs import ParameterCrs
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from sextante.outputs.OutputVector import OutputVector
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class ReprojectLayer(GeoAlgorithm):
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INPUT = "INPUT"
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TARGET_CRS = "TARGET_CRS"
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OUTPUT = "OUTPUT"
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def getIcon(self):
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return QtGui.QIcon(os.path.dirname(__file__) + "/icons/reproject.png")
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def defineCharacteristics(self):
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self.name = "Reproject layer"
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self.group = "Data management tools"
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self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
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self.addParameter(ParameterCrs(self.TARGET_CRS, "Target CRS", "4326"))
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self.addOutput(OutputVector(self.OUTPUT, "Reprojected layer"))
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def processAlgorithm(self, progress):
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layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
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crsId = self.getParameterValue(self.TARGET_CRS)
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targetCrs = QgsCoordinateReferenceSystem(int(crsId))
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output = self.getOutputValue(self.OUTPUT)
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writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields(),
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layer.wkbType(), targetCrs)
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layer.select(layer.pendingAllAttributesList())
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current = 0
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total = 100.0 / float(layer.featureCount())
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layerCrs = layer.crs()
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crsTransform = QgsCoordinateTransform(layerCrs, targetCrs)
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f = QgsFeature()
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outFeat = QgsFeature()
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while layer.nextFeature(f):
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geom = f.geometry()
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geom.transform(crsTransform)
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outFeat.setGeometry(geom)
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outFeat.setAttributeMap(f.attributeMap())
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writer.addFeature(outFeat)
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current += 1
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progress.setPercentage(int(current * total))
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del writer
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