def processAlgorithm(self, progress):
vlayerA = QGisLayers.getObjectFromUri(self.getParameterValue(Union.INPUT))
vlayerB = QGisLayers.getObjectFromUri(self.getParameterValue(Union.INPUT2))
GEOS_EXCEPT = True
FEATURE_EXCEPT = True
vproviderA = vlayerA.dataProvider()
allAttrsA = vproviderA.attributeIndexes()
vproviderA.select( allAttrsA )
vproviderB = vlayerB.dataProvider()
allAttrsB = vproviderB.attributeIndexes()
vproviderB.select( allAttrsB )
# check for crs compatibility
crsA = vproviderA.crs()
crsB = vproviderB.crs()
if not crsA.isValid() or not crsB.isValid():
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Union. Invalid CRS. Results might be unexpected")
else:
if not crsA != crsB:
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Union. Non-matching CRSs. Results might be unexpected")
fields = ftools_utils.combineVectorFields(vlayerA, vlayerB )
longNames = ftools_utils.checkFieldNameLength( fields )
if not longNames.isEmpty():
raise GeoAlgorithmExecutionException("Following field names are longer than 10 characters:\n" + longNames.join('\n') )
writer = self.getOutputFromName(Union.OUTPUT).getVectorWriter(fields, vproviderA.geometryType(), vproviderA.crs() )
inFeatA = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
indexA = ftools_utils.createIndex( QGisLayers.features(vlayerB) )
indexB = ftools_utils.createIndex( QGisLayers.features(vlayerA) )
nFeat = vproviderA.featureCount() + vproviderB.featureCount()
vproviderA.rewind()
count = 0
nElement = 0
featuresA = QGisLayers.features(vlayerA)
nFeat = len(featuresA)
for inFeatA in featuresA:
progress.setPercentage(nElement/float(nFeat) * 50)
nElement += 1
found = False
geom = QgsGeometry( inFeatA.geometry() )
diff_geom = QgsGeometry( geom )
atMapA = inFeatA.attributeMap()
intersects = indexA.intersects( geom.boundingBox() )
if len( intersects ) < 1:
try:
outFeat.setGeometry( geom )
outFeat.setAttributeMap( atMapA )
writer.addFeature( outFeat )
except:
# this really shouldn't happen, as we
# haven't edited the input geom at all
FEATURE_EXCEPT = False
else:
for id in intersects:
count += 1
vproviderB.featureAtId( int( id ), inFeatB , True, allAttrsB )
atMapB = inFeatB.attributeMap()
tmpGeom = QgsGeometry( inFeatB.geometry() )
try:
if geom.intersects( tmpGeom ):
found = True
int_geom = geom.intersection( tmpGeom )
if int_geom is None:
# There was a problem creating the intersection
GEOS_EXCEPT = False
int_geom = QgsGeometry()
else:
int_geom = QgsGeometry(int_geom)
if diff_geom.intersects( tmpGeom ):
diff_geom = diff_geom.difference( tmpGeom )
if diff_geom is None:
# It's possible there was an error here?
diff_geom = QgsGeometry()
else:
diff_geom = QgsGeometry(diff_geom)
if int_geom.wkbType() == 0:
# intersection produced different geomety types
temp_list = int_geom.asGeometryCollection()
for i in temp_list:
if i.type() == geom.type():
int_geom = QgsGeometry( i )
try:
outFeat.setGeometry( int_geom )
outFeat.setAttributeMap( ftools_utils.combineVectorAttributes( atMapA, atMapB ) )
writer.addFeature( outFeat )
except Exception, err:
FEATURE_EXCEPT = False
else:
# this only happends if the bounding box
# intersects, but the geometry doesn't
try:
outFeat.setGeometry( geom )
outFeat.setAttributeMap( atMapA )
writer.addFeature( outFeat )
except:
# also shoudn't ever happen
FEATURE_EXCEPT = False
except Exception, err:
GEOS_EXCEPT = False
found = False
def processAlgorithm(self, progress):
vlayerA = QGisLayers.getObjectFromUri(
self.getParameterValue(Union.INPUT))
vlayerB = QGisLayers.getObjectFromUri(
self.getParameterValue(Union.INPUT2))
GEOS_EXCEPT = True
FEATURE_EXCEPT = True
vproviderA = vlayerA.dataProvider()
allAttrsA = vproviderA.attributeIndexes()
vproviderA.select(allAttrsA)
vproviderB = vlayerB.dataProvider()
allAttrsB = vproviderB.attributeIndexes()
vproviderB.select(allAttrsB)
# check for crs compatibility
crsA = vproviderA.crs()
crsB = vproviderB.crs()
if not crsA.isValid() or not crsB.isValid():
SextanteLog.addToLog(
SextanteLog.LOG_WARNING,
"Union. Invalid CRS. Results might be unexpected")
else:
if not crsA != crsB:
SextanteLog.addToLog(
SextanteLog.LOG_WARNING,
"Union. Non-matching CRSs. Results might be unexpected")
fields = ftools_utils.combineVectorFields(vlayerA, vlayerB)
longNames = ftools_utils.checkFieldNameLength(fields)
if not longNames.isEmpty():
raise GeoAlgorithmExecutionException(
"Following field names are longer than 10 characters:\n" +
longNames.join('\n'))
writer = self.getOutputFromName(Union.OUTPUT).getVectorWriter(
fields, vproviderA.geometryType(), vproviderA.crs())
inFeatA = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
indexA = ftools_utils.createIndex(QGisLayers.features(vlayerB))
indexB = ftools_utils.createIndex(QGisLayers.features(vlayerA))
nFeat = vproviderA.featureCount() + vproviderB.featureCount()
vproviderA.rewind()
count = 0
nElement = 0
featuresA = QGisLayers.features(vlayerA)
nFeat = len(featuresA)
for inFeatA in featuresA:
progress.setPercentage(nElement / float(nFeat) * 50)
nElement += 1
found = False
geom = QgsGeometry(inFeatA.geometry())
diff_geom = QgsGeometry(geom)
atMapA = inFeatA.attributeMap()
intersects = indexA.intersects(geom.boundingBox())
if len(intersects) < 1:
try:
outFeat.setGeometry(geom)
outFeat.setAttributeMap(atMapA)
writer.addFeature(outFeat)
except:
# this really shouldn't happen, as we
# haven't edited the input geom at all
FEATURE_EXCEPT = False
else:
for id in intersects:
count += 1
vproviderB.featureAtId(int(id), inFeatB, True, allAttrsB)
atMapB = inFeatB.attributeMap()
tmpGeom = QgsGeometry(inFeatB.geometry())
try:
if geom.intersects(tmpGeom):
found = True
int_geom = geom.intersection(tmpGeom)
if int_geom is None:
# There was a problem creating the intersection
GEOS_EXCEPT = False
int_geom = QgsGeometry()
else:
int_geom = QgsGeometry(int_geom)
if diff_geom.intersects(tmpGeom):
diff_geom = diff_geom.difference(tmpGeom)
if diff_geom is None:
# It's possible there was an error here?
diff_geom = QgsGeometry()
else:
diff_geom = QgsGeometry(diff_geom)
if int_geom.wkbType() == 0:
# intersection produced different geomety types
temp_list = int_geom.asGeometryCollection()
for i in temp_list:
if i.type() == geom.type():
int_geom = QgsGeometry(i)
try:
outFeat.setGeometry(int_geom)
outFeat.setAttributeMap(
ftools_utils.combineVectorAttributes(
atMapA, atMapB))
writer.addFeature(outFeat)
except Exception, err:
FEATURE_EXCEPT = False
else:
# this only happends if the bounding box
# intersects, but the geometry doesn't
try:
outFeat.setGeometry(geom)
outFeat.setAttributeMap(atMapA)
writer.addFeature(outFeat)
except:
# also shoudn't ever happen
FEATURE_EXCEPT = False
except Exception, err:
GEOS_EXCEPT = False
found = False
def processAlgorithm(self, progress):
vlayerA = QGisLayers.getObjectFromUri(
self.getParameterValue(Intersection.INPUT))
vlayerB = QGisLayers.getObjectFromUri(
self.getParameterValue(Intersection.INPUT2))
GEOS_EXCEPT = True
FEATURE_EXCEPT = True
vproviderA = vlayerA.dataProvider()
allAttrsA = vproviderA.attributeIndexes()
vproviderA.select(allAttrsA)
vproviderB = vlayerB.dataProvider()
allAttrsB = vproviderB.attributeIndexes()
vproviderB.select(allAttrsB)
# check for crs compatibility
crsA = vproviderA.crs()
crsB = vproviderB.crs()
if not crsA.isValid() or not crsB.isValid():
SextanteLog.addToLog(
SextanteLog.LOG_WARNING,
"Intersection. Invalid CRS. Results might be unexpected")
else:
if not crsA != crsB:
SextanteLog.addToLog(
SextanteLog.LOG_WARNING,
"Intersection. Non-matching CRSs. Results might be unexpected"
)
fields = ftools_utils.combineVectorFields(vlayerA, vlayerB)
longNames = ftools_utils.checkFieldNameLength(fields)
if not longNames.isEmpty():
raise GeoAlgorithmExecutionException(
"Following field names are longer than 10 characters:\n" +
longNames.join('\n'))
writer = self.getOutputFromName(Intersection.OUTPUT).getVectorWriter(
fields, vproviderA.geometryType(), vproviderA.crs())
inFeatA = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
index = ftools_utils.createIndex(QGisLayers.features(vlayerB))
nElement = 0
selectionA = QGisLayers.features(vlayerA)
nFeat = len(selectionA)
for inFeatA in selectionA:
nElement += 1
progress.setPercentage(nElement / float(nFeat) * 100)
geom = QgsGeometry(inFeatA.geometry())
atMapA = inFeatA.attributeMap()
intersects = index.intersects(geom.boundingBox())
for id in intersects:
vproviderB.featureAtId(int(id), inFeatB, True, allAttrsB)
tmpGeom = QgsGeometry(inFeatB.geometry())
try:
if geom.intersects(tmpGeom):
atMapB = inFeatB.attributeMap()
int_geom = QgsGeometry(geom.intersection(tmpGeom))
if int_geom.wkbType() == 7:
int_com = geom.combine(tmpGeom)
int_sym = geom.symDifference(tmpGeom)
int_geom = QgsGeometry(int_com.difference(int_sym))
try:
outFeat.setGeometry(int_geom)
outFeat.setAttributeMap(
ftools_utils.combineVectorAttributes(
atMapA, atMapB))
writer.addFeature(outFeat)
except:
FEATURE_EXCEPT = False
continue
except:
GEOS_EXCEPT = False
break
del writer
if not GEOS_EXCEPT:
SextanteLog.addToLog(
SextanteLog.LOG_WARNING,
"Geometry exception while computing intersection")
if not FEATURE_EXCEPT:
SextanteLog.addToLog(
SextanteLog.LOG_WARNING,
"Feature exception while computing intersection")
def processAlgorithm(self, progress):
vlayerA = QGisLayers.getObjectFromUri(self.getParameterValue(Intersection.INPUT))
vlayerB = QGisLayers.getObjectFromUri(self.getParameterValue(Intersection.INPUT2))
GEOS_EXCEPT = True
FEATURE_EXCEPT = True
vproviderA = vlayerA.dataProvider()
allAttrsA = vproviderA.attributeIndexes()
vproviderA.select(allAttrsA)
vproviderB = vlayerB.dataProvider()
allAttrsB = vproviderB.attributeIndexes()
vproviderB.select(allAttrsB)
# check for crs compatibility
crsA = vproviderA.crs()
crsB = vproviderB.crs()
if not crsA.isValid() or not crsB.isValid():
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Intersection. Invalid CRS. Results might be unexpected")
else:
if not crsA != crsB:
SextanteLog.addToLog(
SextanteLog.LOG_WARNING, "Intersection. Non-matching CRSs. Results might be unexpected"
)
fields = ftools_utils.combineVectorFields(vlayerA, vlayerB)
longNames = ftools_utils.checkFieldNameLength(fields)
if not longNames.isEmpty():
raise GeoAlgorithmExecutionException(
"Following field names are longer than 10 characters:\n" + longNames.join("\n")
)
writer = self.getOutputFromName(Intersection.OUTPUT).getVectorWriter(
fields, vproviderA.geometryType(), vproviderA.crs()
)
inFeatA = QgsFeature()
inFeatB = QgsFeature()
outFeat = QgsFeature()
index = ftools_utils.createIndex(QGisLayers.features(vlayerB))
nElement = 0
selectionA = QGisLayers.features(vlayerA)
nFeat = len(selectionA)
for inFeatA in selectionA:
nElement += 1
progress.setPercentage(nElement / float(nFeat) * 100)
geom = QgsGeometry(inFeatA.geometry())
atMapA = inFeatA.attributeMap()
intersects = index.intersects(geom.boundingBox())
for id in intersects:
vproviderB.featureAtId(int(id), inFeatB, True, allAttrsB)
tmpGeom = QgsGeometry(inFeatB.geometry())
try:
if geom.intersects(tmpGeom):
atMapB = inFeatB.attributeMap()
int_geom = QgsGeometry(geom.intersection(tmpGeom))
if int_geom.wkbType() == 7:
int_com = geom.combine(tmpGeom)
int_sym = geom.symDifference(tmpGeom)
int_geom = QgsGeometry(int_com.difference(int_sym))
try:
outFeat.setGeometry(int_geom)
outFeat.setAttributeMap(ftools_utils.combineVectorAttributes(atMapA, atMapB))
writer.addFeature(outFeat)
except:
FEATURE_EXCEPT = False
continue
except:
GEOS_EXCEPT = False
break
del writer
if not GEOS_EXCEPT:
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Geometry exception while computing intersection")
if not FEATURE_EXCEPT:
SextanteLog.addToLog(SextanteLog.LOG_WARNING, "Feature exception while computing intersection")
