mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-27 00:33:48 -05:00
69 lines
2.8 KiB
Python
69 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
AutoincrementalField.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 PyQt4.QtCore import QVariant
|
|
from qgis.core import QgsField, QgsFeature
|
|
from processing.core.GeoAlgorithm import GeoAlgorithm
|
|
from processing.core.parameters import ParameterVector
|
|
from processing.core.outputs import OutputVector
|
|
from processing.tools import dataobjects, vector
|
|
|
|
|
|
class AutoincrementalField(GeoAlgorithm):
|
|
|
|
INPUT = 'INPUT'
|
|
OUTPUT = 'OUTPUT'
|
|
|
|
def defineCharacteristics(self):
|
|
self.name, self.i18n_name = self.trAlgorithm('Add autoincremental field')
|
|
self.group, self.i18n_group = self.trAlgorithm('Vector table tools')
|
|
self.addParameter(ParameterVector(self.INPUT,
|
|
self.tr('Input layer'), [ParameterVector.VECTOR_TYPE_ANY]))
|
|
self.addOutput(OutputVector(self.OUTPUT, self.tr('Incremented')))
|
|
|
|
def processAlgorithm(self, progress):
|
|
output = self.getOutputFromName(self.OUTPUT)
|
|
vlayer = \
|
|
dataobjects.getObjectFromUri(self.getParameterValue(self.INPUT))
|
|
vprovider = vlayer.dataProvider()
|
|
fields = vprovider.fields()
|
|
fields.append(QgsField('AUTO', QVariant.Int))
|
|
writer = output.getVectorWriter(fields, vprovider.geometryType(),
|
|
vlayer.crs())
|
|
outFeat = QgsFeature()
|
|
features = vector.features(vlayer)
|
|
total = 100.0 / len(features)
|
|
for current, feat in enumerate(features):
|
|
progress.setPercentage(int(current * total))
|
|
geom = feat.geometry()
|
|
outFeat.setGeometry(geom)
|
|
attrs = feat.attributes()
|
|
attrs.append(current)
|
|
outFeat.setAttributes(attrs)
|
|
writer.addFeature(outFeat)
|
|
del writer
|