本文整理匯總了Python中qgis.core.QgsWKBTypes.hasM方法的典型用法代碼示例。如果您正苦於以下問題：Python QgsWKBTypes.hasM方法的具體用法？Python QgsWKBTypes.hasM怎麽用？Python QgsWKBTypes.hasM使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類qgis.core.QgsWKBTypes的用法示例。
在下文中一共展示了QgsWKBTypes.hasM方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: reclassify
# 需要導入模塊: from qgis.core import QgsWKBTypes [as 別名]
# 或者: from qgis.core.QgsWKBTypes import hasM [as 別名]
def reclassify(self):
"""
Performs the actual reclassification, moving the geometry to the correct layer along with the specified attributes
"""
if not self.checkConditions():
return
somethingMade = False
reclassifiedFeatures = 0
#button that sent the signal
self.buttonName = self.sender().text().split(' [')[0]
(reclassificationLayer, self.category, self.edgvClass) = self.getLayerFromButton(self.buttonName)
geomType = reclassificationLayer.geometryType()
hasMValues = QgsWKBTypes.hasM(int(reclassificationLayer.wkbType())) #generic check (not every database is implemented as ours)
hasZValues = QgsWKBTypes.hasZ(int(reclassificationLayer.wkbType())) #
isMulti = QgsWKBTypes.isMultiType(int(reclassificationLayer.wkbType())) #
mapLayers = self.iface.mapCanvas().layers()
#we need to get the authid that thefines the ref system of destination layer
crsSrc = QgsCoordinateReferenceSystem(reclassificationLayer.crs().authid())
deleteList = []
for mapLayer in mapLayers:
if mapLayer.type() != QgsMapLayer.VectorLayer:
continue
#iterating over selected features
featList = []
mapLayerCrs = mapLayer.crs()
#creating a coordinate transformer (mapLayerCrs to crsSrc)
coordinateTransformer = QgsCoordinateTransform(mapLayerCrs, crsSrc)
for feature in mapLayer.selectedFeatures():
geomList = []
geom = feature.geometry()
if geom.type() != geomType:
continue
if 'geometry' in dir(geom):
if not hasMValues:
geom.geometry().dropMValue()
if not hasZValues:
geom.geometry().dropZValue()
if isMulti and not geom.isMultipart():
geom.convertToMultiType()
geomList.append(geom)
if not isMulti and geom.isMultipart():
#deaggregate here
parts = geom.asGeometryCollection()
for part in parts:
part.convertToSingleType()
geomList.append(part)
else:
geomList.append(geom)
for newGeom in geomList:
#creating a new feature according to the reclassification layer
newFeature = QgsFeature(reclassificationLayer.pendingFields())
#transforming the geometry to the correct crs
geom.transform(coordinateTransformer)
#setting the geometry
newFeature.setGeometry(newGeom)
#setting the attributes using the reclassification dictionary
newFeature = self.setFeatureAttributes(newFeature, oldFeat = feature)
#adding the newly created feature to the addition list
featList.append(newFeature)
somethingMade = True
deleteList.append({'originalLyr':mapLayer,'featid':feature.id()})
#actual feature insertion
reclassificationLayer.addFeatures(featList, False)
reclassifiedFeatures += len(featList)
for item in deleteList:
item['originalLyr'].startEditing()
item['originalLyr'].deleteFeature(item['featid'])
if somethingMade:
self.iface.messageBar().pushMessage(self.tr('Information!'), self.tr('{} features reclassified with success!').format(reclassifiedFeatures), level=QgsMessageBar.INFO, duration=3)