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RemoveNullGeometry.py
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RemoveNullGeometry.py
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# -*- coding: utf-8 -*-
"""
***************************************************************************
RemoveNullGeometry.py
--------------
Date : October 2016
Copyright : (C) 2016 by Nyall Dawson
Email : nyall dot dawson 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__ = 'Nyall Dawson'
__date__ = 'October 2016'
__copyright__ = '(C) 2016, Nyall Dawson'
# This will get replaced with a git SHA1 when you do a git archive323
__revision__ = '$Format:%H$'
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 RemoveNullGeometry(GeoAlgorithm):
INPUT_LAYER = 'INPUT_LAYER'
OUTPUT_LAYER = 'OUTPUT_LAYER'
def defineCharacteristics(self):
self.name, self.i18n_name = self.trAlgorithm('Remove null geometries')
self.group, self.i18n_group = self.trAlgorithm('Vector selection tools')
self.tags = self.tr('remove,drop,delete,empty,geometry')
self.addParameter(ParameterVector(self.INPUT_LAYER,
self.tr('Input layer'), [dataobjects.TYPE_VECTOR_ANY]))
self.addOutput(OutputVector(self.OUTPUT_LAYER, self.tr('Removed null geometry')))
def processAlgorithm(self, progress):
layer = dataobjects.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
writer = self.getOutputFromName(
self.OUTPUT_LAYER).getVectorWriter(
layer.fields(),
layer.wkbType(),
layer.crs())
features = vector.features(layer)
total = 100.0 / len(features)
for current, input_feature in enumerate(features):
if input_feature.hasGeometry():
writer.addFeature(input_feature)
progress.setPercentage(int(current * total))
del writer