本文整理汇总了Python中qgis.core.QgsDatumTransform.operations方法的典型用法代码示例。如果您正苦于以下问题：Python QgsDatumTransform.operations方法的具体用法？Python QgsDatumTransform.operations怎么用？Python QgsDatumTransform.operations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.operations方法的1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: testOperations
# 需要导入模块: from qgis.core import QgsDatumTransform [as 别名]
# 或者: from qgis.core.QgsDatumTransform import operations [as 别名]
def testOperations(self):
ops = QgsDatumTransform.operations(QgsCoordinateReferenceSystem(),
QgsCoordinateReferenceSystem())
self.assertEqual(ops, [])
ops = QgsDatumTransform.operations(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem())
self.assertEqual(ops, [])
ops = QgsDatumTransform.operations(QgsCoordinateReferenceSystem(),
QgsCoordinateReferenceSystem('EPSG:3111'))
self.assertEqual(ops, [])
ops = QgsDatumTransform.operations(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:3111'))
self.assertEqual(len(ops), 1)
self.assertTrue(ops[0].name)
self.assertEqual(ops[0].proj, '+proj=noop')
self.assertEqual(ops[0].accuracy, 0.0)
self.assertTrue(ops[0].isAvailable)
ops = QgsDatumTransform.operations(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:4283'))
self.assertEqual(len(ops), 1)
self.assertTrue(ops[0].name)
self.assertEqual(ops[0].proj, '+proj=pipeline +step +inv +proj=lcc +lat_0=-37 +lon_0=145 +lat_1=-36 +lat_2=-38 +x_0=2500000 +y_0=2500000 +ellps=GRS80 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1')
self.assertEqual(ops[0].accuracy, -1.0)
self.assertTrue(ops[0].isAvailable)
ops = QgsDatumTransform.operations(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:28355'))
self.assertEqual(len(ops), 1)
self.assertTrue(ops[0].name)
self.assertEqual(ops[0].proj, '+proj=pipeline +step +inv +proj=lcc +lat_0=-37 +lon_0=145 +lat_1=-36 +lat_2=-38 +x_0=2500000 +y_0=2500000 +ellps=GRS80 +step +proj=utm +zone=55 +south +ellps=GRS80')
self.assertEqual(ops[0].accuracy, 0.0)
self.assertTrue(ops[0].isAvailable)
# uses a grid file
ops = QgsDatumTransform.operations(QgsCoordinateReferenceSystem('EPSG:4283'),
QgsCoordinateReferenceSystem('EPSG:7844'))
self.assertGreaterEqual(len(ops), 5)
op1_index = [i for i in range(len(ops)) if ops[i].proj == '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=GRS80 +step +proj=helmert +x=0.06155 +y=-0.01087 +z=-0.04019 +rx=-0.0394924 +ry=-0.0327221 +rz=-0.0328979 +s=-0.009994 +convention=coordinate_frame +step +inv +proj=cart +ellps=GRS80 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'][0]
self.assertTrue(ops[op1_index].name)
self.assertEqual(ops[op1_index].proj, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=GRS80 +step +proj=helmert +x=0.06155 +y=-0.01087 +z=-0.04019 +rx=-0.0394924 +ry=-0.0327221 +rz=-0.0328979 +s=-0.009994 +convention=coordinate_frame +step +inv +proj=cart +ellps=GRS80 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1')
self.assertTrue(ops[op1_index].isAvailable)
self.assertEqual(ops[op1_index].accuracy, 0.01)
self.assertEqual(len(ops[op1_index].grids), 0)
op2_index = [i for i in range(len(ops)) if ops[i].proj == '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=GDA94_GDA2020_conformal_and_distortion.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'][0]
self.assertTrue(ops[op2_index].name)
self.assertEqual(ops[op2_index].proj, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=GDA94_GDA2020_conformal_and_distortion.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1')
self.assertEqual(ops[op2_index].accuracy, 0.05) # actually incorrect in EPSG registry, may need updating
self.assertEqual(len(ops[op2_index].grids), 1)
self.assertEqual(ops[op2_index].grids[0].shortName, 'GDA94_GDA2020_conformal_and_distortion.gsb')
self.assertEqual(ops[op2_index].grids[0].fullName, '')
self.assertEqual(ops[op2_index].grids[0].packageName, 'proj-datumgrid-oceania')
self.assertEqual(ops[op2_index].grids[0].url, 'https://download.osgeo.org/proj/proj-datumgrid-oceania-latest.zip')
self.assertTrue(ops[op2_index].grids[0].directDownload)
self.assertTrue(ops[op2_index].grids[0].openLicense)
op3_index = [i for i in range(len(ops)) if ops[i].proj == '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=GDA94_GDA2020_conformal.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'][0]
self.assertTrue(ops[op3_index].name)
self.assertEqual(ops[op3_index].proj, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=GDA94_GDA2020_conformal.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1')
self.assertEqual(ops[op3_index].accuracy, 0.05) # actually incorrect in EPSG registry, may need updating
self.assertEqual(len(ops[op3_index].grids), 1)
self.assertEqual(ops[op3_index].grids[0].shortName, 'GDA94_GDA2020_conformal.gsb')
self.assertEqual(ops[op3_index].grids[0].fullName, '')
self.assertEqual(ops[op3_index].grids[0].packageName, 'proj-datumgrid-oceania')
self.assertEqual(ops[op3_index].grids[0].url, 'https://download.osgeo.org/proj/proj-datumgrid-oceania-latest.zip')
self.assertTrue(ops[op3_index].grids[0].directDownload)
self.assertTrue(ops[op3_index].grids[0].openLicense)
op4_index = [i for i in range(len(ops)) if ops[i].proj == '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=GDA94_GDA2020_conformal_cocos_island.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'][0]
self.assertTrue(ops[op4_index].name)
self.assertEqual(ops[op4_index].proj, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=GDA94_GDA2020_conformal_cocos_island.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1')
self.assertEqual(ops[op4_index].accuracy, 0.05) # actually incorrect in EPSG registry, may need updating
self.assertEqual(len(ops[op4_index].grids), 1)
self.assertEqual(ops[op4_index].grids[0].shortName, 'GDA94_GDA2020_conformal_cocos_island.gsb')
self.assertEqual(ops[op4_index].grids[0].fullName, '')
op5_index = [i for i in range(len(ops)) if ops[i].proj == '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=GDA94_GDA2020_conformal_christmas_island.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'][0]
self.assertTrue(ops[op5_index].name)
self.assertEqual(ops[op5_index].proj, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=GDA94_GDA2020_conformal_christmas_island.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1')
self.assertEqual(ops[op5_index].accuracy, 0.05) # actually incorrect in EPSG registry, may need updating
self.assertEqual(len(ops[op5_index].grids), 1)
self.assertEqual(ops[op5_index].grids[0].shortName, 'GDA94_GDA2020_conformal_christmas_island.gsb')
self.assertEqual(ops[op5_index].grids[0].fullName, '')
# uses a pivot datum (technically a proj test, but this will help me sleep at night ;)
ops = QgsDatumTransform.operations(QgsCoordinateReferenceSystem('EPSG:3111'),
QgsCoordinateReferenceSystem('EPSG:7899'))
self.assertGreaterEqual(len(ops), 3)
op1_index = [i for i in range(len(ops)) if ops[i].proj == '+proj=pipeline +step +inv +proj=lcc +lat_0=-37 +lon_0=145 +lat_1=-36 +lat_2=-38 +x_0=2500000 +y_0=2500000 +ellps=GRS80 +step +proj=push +v_3 +step +proj=cart +ellps=GRS80 +step +proj=helmert +x=0.06155 +y=-0.01087 +z=-0.04019 +rx=-0.0394924 +ry=-0.0327221 +rz=-0.0328979 +s=-0.009994 +convention=coordinate_frame +step +inv +proj=cart +ellps=GRS80 +step +proj=pop +v_3 +step +proj=lcc +lat_0=-37 +lon_0=145 +lat_1=-36 +lat_2=-38 +x_0=2500000 +y_0=2500000 +ellps=GRS80'][0]
self.assertTrue(ops[op1_index].name)
self.assertEqual(ops[op1_index].proj, '+proj=pipeline +step +inv +proj=lcc +lat_0=-37 +lon_0=145 +lat_1=-36 +lat_2=-38 +x_0=2500000 +y_0=2500000 +ellps=GRS80 +step +proj=push +v_3 +step +proj=cart +ellps=GRS80 +step +proj=helmert +x=0.06155 +y=-0.01087 +z=-0.04019 +rx=-0.0394924 +ry=-0.0327221 +rz=-0.0328979 +s=-0.009994 +convention=coordinate_frame +step +inv +proj=cart +ellps=GRS80 +step +proj=pop +v_3 +step +proj=lcc +lat_0=-37 +lon_0=145 +lat_1=-36 +lat_2=-38 +x_0=2500000 +y_0=2500000 +ellps=GRS80')
self.assertTrue(ops[op1_index].isAvailable)
self.assertEqual(ops[op1_index].accuracy, 0.01)
self.assertEqual(len(ops[op1_index].grids), 0)
#.........这里部分代码省略.........