Nyall Dawson c1649ebef4 [processing] pendingFields() -> fields()
Does the same thing, but pendingFields() is ugly
2016-08-05 06:31:07 +10:00

77 lines
2.9 KiB
Python

# -*- coding: utf-8 -*-
"""
***************************************************************************
DeleteColumn.py
---------------------
Date : May 2010
Copyright : (C) 2010 by Michael Minn
Email : pyqgis at michaelminn 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__ = 'Michael Minn'
__date__ = 'May 2010'
__copyright__ = '(C) 2010, Michael Minn'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
from qgis.core import QgsFeature
from processing.core.GeoAlgorithm import GeoAlgorithm
from processing.core.parameters import ParameterVector
from processing.core.parameters import ParameterTableField
from processing.core.outputs import OutputVector
from processing.tools import dataobjects, vector
class DeleteColumn(GeoAlgorithm):
INPUT = 'INPUT'
COLUMN = 'COLUMN'
OUTPUT = 'OUTPUT'
def defineCharacteristics(self):
self.name, self.i18n_name = self.trAlgorithm('Delete column')
self.group, self.i18n_group = self.trAlgorithm('Vector table tools')
self.addParameter(ParameterVector(self.INPUT,
self.tr('Input layer'), [ParameterVector.VECTOR_TYPE_ANY]))
self.addParameter(ParameterTableField(self.COLUMN,
self.tr('Field to delete'), self.INPUT))
self.addOutput(OutputVector(self.OUTPUT, self.tr('Deleted column')))
def processAlgorithm(self, progress):
layer = dataobjects.getObjectFromUri(
self.getParameterValue(self.INPUT))
idx = layer.fieldNameIndex(self.getParameterValue(self.COLUMN))
fields = layer.fields()
fields.remove(idx)
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(fields,
layer.wkbType(), layer.crs())
features = vector.features(layer)
total = 100.0 / len(features)
feat = QgsFeature()
for current, f in enumerate(features):
feat.setGeometry(f.geometry())
attributes = f.attributes()
del attributes[idx]
feat.setAttributes(attributes)
writer.addFeature(feat)
progress.setPercentage(int(current * total))
del writer