本文整理汇总了Python中qgis.core.QgsDatumTransform.datumTransformToProj方法的典型用法代码示例。如果您正苦于以下问题：Python QgsDatumTransform.datumTransformToProj方法的具体用法？Python QgsDatumTransform.datumTransformToProj怎么用？Python QgsDatumTransform.datumTransformToProj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.QgsDatumTransform的用法示例。
在下文中一共展示了QgsDatumTransform.datumTransformToProj方法的2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: testStringToTransformId
# 需要导入模块: from qgis.core import QgsDatumTransform [as 别名]
# 或者: from qgis.core.QgsDatumTransform import datumTransformToProj [as 别名]
def testStringToTransformId(self):
"""
Test converting proj strings to corresponding datum IDs
"""
self.assertEqual(QgsDatumTransform.projStringToDatumTransformId(''), -1)
self.assertEqual(QgsDatumTransform.projStringToDatumTransformId('not'), -1)
test_string = '+towgs84=-403,684,41'
id = QgsDatumTransform.projStringToDatumTransformId(test_string)
self.assertNotEqual(id, -1)
string = QgsDatumTransform.datumTransformToProj(id)
self.assertEqual(string, test_string)
self.assertEqual(QgsDatumTransform.projStringToDatumTransformId(test_string.upper()), id)示例2: testTransformInfo
# 需要导入模块: from qgis.core import QgsDatumTransform [as 别名]
# 或者: from qgis.core.QgsDatumTransform import datumTransformToProj [as 别名]
def testTransformInfo(self):
# hopefully this transform is available on all platforms!
transforms = QgsDatumTransform.datumTransformations(QgsCoordinateReferenceSystem(4613), QgsCoordinateReferenceSystem(4326))
self.assertTrue(len(transforms) > 0)
self.assertIn('+towgs84=-403,684,41', [QgsDatumTransform.datumTransformToProj(t.sourceTransformId) for t in transforms])
self.assertEqual([''] * len(transforms), [QgsDatumTransform.datumTransformToProj(t.destinationTransformId) for t in transforms])
self.assertIn('EPSG:4613', [QgsDatumTransform.datumTransformInfo(t.sourceTransformId).sourceCrsAuthId for t in
transforms])
self.assertEqual([''] * len(transforms), [QgsDatumTransform.datumTransformInfo(t.destinationTransformId).destinationCrsAuthId for t in
transforms])
# and the reverse
transforms = QgsDatumTransform.datumTransformations(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(4613))
self.assertTrue(len(transforms) > 0)
self.assertEqual([''] * len(transforms), [QgsDatumTransform.datumTransformToProj(t.sourceTransformId) for t in transforms])
self.assertIn('+towgs84=-403,684,41',
[QgsDatumTransform.datumTransformToProj(t.destinationTransformId) for t in transforms])
self.assertEqual([''] * len(transforms), [QgsDatumTransform.datumTransformInfo(t.sourceTransformId).destinationCrsAuthId for t in
transforms])
self.assertIn('EPSG:4613', [QgsDatumTransform.datumTransformInfo(t.destinationTransformId).sourceCrsAuthId for t in
transforms])