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77 lines
2.9 KiB
Python
77 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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DeleteColumn.py
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---------------------
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Date : May 2010
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Copyright : (C) 2010 by Michael Minn
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Email : pyqgis at michaelminn 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__ = 'Michael Minn'
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__date__ = 'May 2010'
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__copyright__ = '(C) 2010, Michael Minn'
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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 qgis.core import QgsFeature
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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 OutputVector
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from processing.tools import dataobjects, vector
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class DeleteColumn(GeoAlgorithm):
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INPUT = 'INPUT'
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COLUMN = 'COLUMN'
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OUTPUT = 'OUTPUT'
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def defineCharacteristics(self):
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self.name, self.i18n_name = self.trAlgorithm('Delete column')
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self.group, self.i18n_group = self.trAlgorithm('Vector table tools')
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self.addParameter(ParameterVector(self.INPUT,
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self.tr('Input layer'), [ParameterVector.VECTOR_TYPE_ANY]))
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self.addParameter(ParameterTableField(self.COLUMN,
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self.tr('Field to delete'), self.INPUT))
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self.addOutput(OutputVector(self.OUTPUT, self.tr('Deleted column')))
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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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idx = layer.fieldNameIndex(self.getParameterValue(self.COLUMN))
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fields = layer.pendingFields()
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fields.remove(idx)
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writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fields,
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layer.wkbType(), layer.crs())
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features = vector.features(layer)
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count = len(features)
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total = 100.0 / float(count)
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feat = QgsFeature()
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for count, f in enumerate(features):
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feat.setGeometry(f.geometry())
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attributes = f.attributes()
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del attributes[idx]
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feat.setAttributes(attributes)
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writer.addFeature(feat)
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progress.setPercentage(int(count * total))
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del writer
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