本文整理汇总了Python中qgis.core.QgsVectorLayer.selectedFeaturesIds方法的典型用法代码示例。如果您正苦于以下问题：Python QgsVectorLayer.selectedFeaturesIds方法的具体用法？Python QgsVectorLayer.selectedFeaturesIds怎么用？Python QgsVectorLayer.selectedFeaturesIds使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类qgis.core.QgsVectorLayer的用法示例。
在下文中一共展示了QgsVectorLayer.selectedFeaturesIds方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: testSelectByRect
# 需要导入模块: from qgis.core import QgsVectorLayer [as 别名]
# 或者: from qgis.core.QgsVectorLayer import selectedFeaturesIds [as 别名]
def testSelectByRect(self):
""" Test selecting by rectangle """
layer = QgsVectorLayer(os.path.join(unitTestDataPath(), 'points.shp'), 'Points', 'ogr')
# SetSelection
layer.selectByRect(QgsRectangle(-112, 30, -94, 45), QgsVectorLayer.SetSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([2, 3, 7, 10, 11, 15]))
# check that existing selection is cleared
layer.selectByRect(QgsRectangle(-112, 30, -94, 37), QgsVectorLayer.SetSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([2, 3, 10, 15]))
# SetSelection no matching
layer.selectByRect(QgsRectangle(112, 30, 115, 45), QgsVectorLayer.SetSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([]))
# AddToSelection
layer.selectByRect(QgsRectangle(-112, 30, -94, 37), QgsVectorLayer.AddToSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([2, 3, 10, 15]))
layer.selectByRect(QgsRectangle(-112, 37, -94, 45), QgsVectorLayer.AddToSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([2, 3, 7, 10, 11, 15]))
# IntersectSelection
layer.selectByRect(QgsRectangle(-112, 30, -94, 37), QgsVectorLayer.IntersectSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([2, 3, 10, 15]))
layer.selectByIds([2, 10, 13])
layer.selectByRect(QgsRectangle(-112, 30, -94, 37), QgsVectorLayer.IntersectSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([2, 10]))
# RemoveFromSelection
layer.selectByRect(QgsRectangle(-112, 30, -94, 45), QgsVectorLayer.SetSelection)
layer.selectByRect(QgsRectangle(-112, 30, -94, 37), QgsVectorLayer.RemoveFromSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([7, 11]))
layer.selectByRect(QgsRectangle(-112, 30, -94, 45), QgsVectorLayer.RemoveFromSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([]))示例2: testSelectByExpression
# 需要导入模块: from qgis.core import QgsVectorLayer [as 别名]
# 或者: from qgis.core.QgsVectorLayer import selectedFeaturesIds [as 别名]
def testSelectByExpression(self):
""" Test selecting by expression """
layer = QgsVectorLayer(os.path.join(unitTestDataPath(), 'points.shp'), 'Points', 'ogr')
# SetSelection
layer.selectByExpression('"Class"=\'B52\' and "Heading" > 10 and "Heading" <70', QgsVectorLayer.SetSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([10, 11]))
# check that existing selection is cleared
layer.selectByExpression('"Class"=\'Biplane\'', QgsVectorLayer.SetSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([1, 5, 6, 7, 8]))
# SetSelection no matching
layer.selectByExpression('"Class"=\'A380\'', QgsVectorLayer.SetSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([]))
# AddToSelection
layer.selectByExpression('"Importance"=3', QgsVectorLayer.AddToSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([0, 2, 3, 4, 14]))
layer.selectByExpression('"Importance"=4', QgsVectorLayer.AddToSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([0, 2, 3, 4, 13, 14]))
# IntersectSelection
layer.selectByExpression('"Heading"<100', QgsVectorLayer.IntersectSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([0, 2, 3, 4]))
layer.selectByExpression('"Cabin Crew"=1', QgsVectorLayer.IntersectSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([2, 3]))
# RemoveFromSelection
layer.selectByExpression('"Heading"=85', QgsVectorLayer.RemoveFromSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([3]))
layer.selectByExpression('"Heading"=95', QgsVectorLayer.RemoveFromSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([]))示例3: testRepack
# 需要导入模块: from qgis.core import QgsVectorLayer [as 别名]
# 或者: from qgis.core.QgsVectorLayer import selectedFeaturesIds [as 别名]
def testRepack(self):
vl = QgsVectorLayer(u'{}|layerid=0'.format(self.repackfile), u'test', u'ogr')
ids = [f.id() for f in vl.getFeatures(QgsFeatureRequest().setFilterExpression('pk=1'))]
vl.setSelectedFeatures(ids)
assert vl.selectedFeaturesIds() == ids, vl.selectedFeaturesIds()
assert vl.pendingFeatureCount() == 5, vl.pendingFeatureCount()
assert vl.startEditing()
assert vl.deleteFeature(3)
assert vl.commitChanges()
assert vl.selectedFeatureCount() == 0 or vl.selectedFeatures()[0]['pk'] == 1示例4: testSelectByIds
# 需要导入模块: from qgis.core import QgsVectorLayer [as 别名]
# 或者: from qgis.core.QgsVectorLayer import selectedFeaturesIds [as 别名]
def testSelectByIds(self):
""" Test selecting by ID"""
layer = QgsVectorLayer(os.path.join(unitTestDataPath(), 'points.shp'), 'Points', 'ogr')
# SetSelection
layer.selectByIds([1, 3, 5, 7], QgsVectorLayer.SetSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([1, 3, 5, 7]))
# check that existing selection is cleared
layer.selectByIds([2, 4, 6], QgsVectorLayer.SetSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([2, 4, 6]))
# AddToSelection
layer.selectByIds([3, 5], QgsVectorLayer.AddToSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([2, 3, 4, 5, 6]))
layer.selectByIds([1], QgsVectorLayer.AddToSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([1, 2, 3, 4, 5, 6]))
# IntersectSelection
layer.selectByIds([1, 3, 5, 6], QgsVectorLayer.IntersectSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([1, 3, 5, 6]))
layer.selectByIds([1, 2, 5, 6], QgsVectorLayer.IntersectSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([1, 5, 6]))
# RemoveFromSelection
layer.selectByIds([2, 6, 7], QgsVectorLayer.RemoveFromSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([1, 5]))
layer.selectByIds([1, 5], QgsVectorLayer.RemoveFromSelection)
self.assertEqual(set(layer.selectedFeaturesIds()), set([]))