mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-27 00:33:48 -05:00
956c155e8f
pep8 --ignore=E111,E128,E201,E202,E203,E211,E221,E222,E225,E226,E227,E231,E241,E261,E265,E272,E302,E303,E501,E701 \
--exclude="ui_*.py,debian/*,python/ext-libs/*" \
.
127 lines
4.7 KiB
Python
127 lines
4.7 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
MultipartToSingleparts.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 qgis.core import QGis, QgsFeature, QgsGeometry
|
|
from processing.core.GeoAlgorithm import GeoAlgorithm
|
|
from processing.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
|
|
from processing.core.parameters import ParameterVector
|
|
from processing.core.outputs import OutputVector
|
|
from processing.tools import dataobjects, vector
|
|
|
|
|
|
class MultipartToSingleparts(GeoAlgorithm):
|
|
|
|
INPUT = 'INPUT'
|
|
OUTPUT = 'OUTPUT'
|
|
|
|
# =========================================================================
|
|
# def getIcon(self):
|
|
# return QIcon(os.path.dirname(__file__) + "/icons/multi_to_single.png")
|
|
# =========================================================================
|
|
|
|
def defineCharacteristics(self):
|
|
self.name = 'Multipart to singleparts'
|
|
self.group = 'Vector geometry tools'
|
|
|
|
self.addParameter(ParameterVector(self.INPUT, self.tr('Input layer')))
|
|
self.addOutput(OutputVector(self.OUTPUT, self.tr('Output layer')))
|
|
|
|
def processAlgorithm(self, progress):
|
|
layer = dataobjects.getObjectFromUri(self.getParameterValue(self.INPUT))
|
|
|
|
geomType = self.multiToSingleGeom(layer.dataProvider().geometryType())
|
|
|
|
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(
|
|
layer.pendingFields().toList(), geomType, layer.crs())
|
|
|
|
outFeat = QgsFeature()
|
|
inGeom = QgsGeometry()
|
|
|
|
current = 0
|
|
features = vector.features(layer)
|
|
total = 100.0 / float(len(features))
|
|
for f in features:
|
|
inGeom = f.geometry()
|
|
attrs = f.attributes()
|
|
|
|
geometries = self.extractAsSingle(inGeom)
|
|
outFeat.setAttributes(attrs)
|
|
|
|
for g in geometries:
|
|
outFeat.setGeometry(g)
|
|
writer.addFeature(outFeat)
|
|
|
|
current += 1
|
|
progress.setPercentage(int(current * total))
|
|
|
|
del writer
|
|
|
|
def multiToSingleGeom(self, wkbType):
|
|
try:
|
|
if wkbType in (QGis.WKBPoint, QGis.WKBMultiPoint,
|
|
QGis.WKBPoint25D, QGis.WKBMultiPoint25D):
|
|
return QGis.WKBPoint
|
|
elif wkbType in (QGis.WKBLineString, QGis.WKBMultiLineString,
|
|
QGis.WKBMultiLineString25D,
|
|
QGis.WKBLineString25D):
|
|
|
|
return QGis.WKBLineString
|
|
elif wkbType in (QGis.WKBPolygon, QGis.WKBMultiPolygon,
|
|
QGis.WKBMultiPolygon25D, QGis.WKBPolygon25D):
|
|
|
|
return QGis.WKBPolygon
|
|
else:
|
|
return QGis.WKBUnknown
|
|
except Exception, err:
|
|
raise GeoAlgorithmExecutionException(unicode(err))
|
|
|
|
def extractAsSingle(self, geom):
|
|
multiGeom = QgsGeometry()
|
|
geometries = []
|
|
if geom.type() == QGis.Point:
|
|
if geom.isMultipart():
|
|
multiGeom = geom.asMultiPoint()
|
|
for i in multiGeom:
|
|
geometries.append(QgsGeometry().fromPoint(i))
|
|
else:
|
|
geometries.append(geom)
|
|
elif geom.type() == QGis.Line:
|
|
if geom.isMultipart():
|
|
multiGeom = geom.asMultiPolyline()
|
|
for i in multiGeom:
|
|
geometries.append(QgsGeometry().fromPolyline(i))
|
|
else:
|
|
geometries.append(geom)
|
|
elif geom.type() == QGis.Polygon:
|
|
if geom.isMultipart():
|
|
multiGeom = geom.asMultiPolygon()
|
|
for i in multiGeom:
|
|
geometries.append(QgsGeometry().fromPolygon(i))
|
|
else:
|
|
geometries.append(geom)
|
|
return geometries
|