Python core.QgsCoordinateTransformContext类代码示例

OGeek|极客世界-中国程序员成长平台 › 门户 › 编程› Python›Python编程经验

原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了Python中qgis.core.QgsCoordinateTransformContext类的典型用法代码示例。如果您正苦于以下问题：Python QgsCoordinateTransformContext类的具体用法？Python QgsCoordinateTransformContext怎么用？Python QgsCoordinateTransformContext使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了QgsCoordinateTransformContext类的20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，您的评价将有助于我们的系统推荐出更棒的Python代码示例。

示例1: testWriteReadXml

    def testWriteReadXml(self):
        # setup a context
        context = QgsCoordinateTransformContext()

        source_id_1 = QgsDatumTransform.datumTransformations(QgsCoordinateReferenceSystem(4204),
                                                             QgsCoordinateReferenceSystem(4326))[0].sourceTransformId
        dest_id_1 = QgsDatumTransform.datumTransformations(QgsCoordinateReferenceSystem(4204),
                                                           QgsCoordinateReferenceSystem(4326))[0].destinationTransformId

        source_id_2 = QgsDatumTransform.datumTransformations(QgsCoordinateReferenceSystem(4205),
                                                             QgsCoordinateReferenceSystem(4326))[0].sourceTransformId
        dest_id_2 = QgsDatumTransform.datumTransformations(QgsCoordinateReferenceSystem(4205),
                                                           QgsCoordinateReferenceSystem(4326))[0].destinationTransformId

        self.assertTrue(context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem(4204),
                                                                   QgsCoordinateReferenceSystem(4326), source_id_1, dest_id_1))
        self.assertTrue(context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem(4205),
                                                                   QgsCoordinateReferenceSystem(4326), source_id_2, dest_id_2))

        self.assertEqual(context.sourceDestinationDatumTransforms(), {('EPSG:4204', 'EPSG:4326'): QgsDatumTransform.TransformPair(source_id_1, dest_id_1),
                                                                      ('EPSG:4205', 'EPSG:4326'): QgsDatumTransform.TransformPair(source_id_2, dest_id_2)})

        # save to xml
        doc = QDomDocument("testdoc")
        elem = doc.createElement("test")
        context.writeXml(elem, QgsReadWriteContext())

        # restore from xml
        context2 = QgsCoordinateTransformContext()
        context2.readXml(elem, QgsReadWriteContext())

        # check result
        self.assertEqual(context2.sourceDestinationDatumTransforms(), {('EPSG:4204', 'EPSG:4326'): QgsDatumTransform.TransformPair(source_id_1, dest_id_1),
                                                                       ('EPSG:4205', 'EPSG:4326'): QgsDatumTransform.TransformPair(source_id_2, dest_id_2)})

开发者ID:alexbruy，项目名称:QGIS，代码行数:34，代码来源:test_qgscoordinatetransformcontext.py

示例2: testMissingTransformsProj6

    def testMissingTransformsProj6(self):
        return # TODO -- this seems impossible to determine with existing PROJ6 api
        # fudge context xml with a missing transform
        doc = QDomDocument("testdoc")
        elem = doc.createElement("test")
        contextElem = doc.createElement("transformContext")
        transformElem = doc.createElement("srcDest")
        transformElem.setAttribute("source", 'EPSG:4204')
        transformElem.setAttribute("dest", 'EPSG:4326')

        # fake a proj string with a grid which will NEVER exist
        fake_proj = '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=hgridshift +grids=this_is_not_a_real_grid.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'
        transformElem.setAttribute("coordinateOp", fake_proj)
        contextElem.appendChild(transformElem)

        elem2 = doc.createElement("test2")
        elem2.appendChild(contextElem)

        # restore from xml
        context2 = QgsCoordinateTransformContext()
        ok, errors = context2.readXml(elem2, QgsReadWriteContext())
        self.assertFalse(ok)

        # check result
        self.assertEqual(errors, ['not valid'])

开发者ID:digitalsatori，项目名称:QGIS，代码行数:25，代码来源:test_qgscoordinatetransformcontext.py

示例3: testWriteReadXmlProj6

    def testWriteReadXmlProj6(self):
        # setup a context
        context = QgsCoordinateTransformContext()

        proj_1 = '+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=intl +step +proj=helmert +x=-18.944 +y=-379.364 +z=-24.063 +rx=-0.04 +ry=0.764 +rz=-6.431 +s=3.657 +convention=coordinate_frame +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'
        proj_2 = '+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=intl +step +proj=helmert +x=-150 +y=-250 +z=-1 +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'

        self.assertTrue(context.addCoordinateOperation(QgsCoordinateReferenceSystem(4204),
                                                       QgsCoordinateReferenceSystem(4326), proj_1))
        self.assertTrue(context.addCoordinateOperation(QgsCoordinateReferenceSystem(4205),
                                                       QgsCoordinateReferenceSystem(4326), proj_2))

        self.assertEqual(context.coordinateOperations(),
                         {('EPSG:4204', 'EPSG:4326'): proj_1,
                          ('EPSG:4205', 'EPSG:4326'): proj_2})

        # save to xml
        doc = QDomDocument("testdoc")
        elem = doc.createElement("test")
        context.writeXml(elem, QgsReadWriteContext())

        # restore from xml
        context2 = QgsCoordinateTransformContext()
        context2.readXml(elem, QgsReadWriteContext())

        # check result
        self.assertEqual(context2.coordinateOperations(),
                         {('EPSG:4204', 'EPSG:4326'): proj_1,
                          ('EPSG:4205', 'EPSG:4326'): proj_2})

开发者ID:digitalsatori，项目名称:QGIS，代码行数:29，代码来源:test_qgscoordinatetransformcontext.py

示例4: testContext

    def testContext(self):
        """
        Various tests to ensure that datum transforms are correctly set respecting context
        """
        context = QgsCoordinateTransformContext()
        context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'),
                                                   QgsCoordinateReferenceSystem('EPSG:4283'),
                                                   3, 4)

        transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28354'), QgsCoordinateReferenceSystem('EPSG:28353'), context)
        self.assertEqual(list(transform.context().sourceDestinationDatumTransforms().keys()), [('EPSG:28356', 'EPSG:4283')])
        # should be no datum transforms
        self.assertEqual(transform.sourceDatumTransformId(), -1)
        self.assertEqual(transform.destinationDatumTransformId(), -1)
        # matching source
        transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28356'), QgsCoordinateReferenceSystem('EPSG:28353'), context)
        self.assertEqual(transform.sourceDatumTransformId(), -1)
        self.assertEqual(transform.destinationDatumTransformId(), -1)
        # matching dest
        transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28354'),
                                           QgsCoordinateReferenceSystem('EPSG:4283'), context)
        self.assertEqual(transform.sourceDatumTransformId(), -1)
        self.assertEqual(transform.destinationDatumTransformId(), -1)
        # matching src/dest pair
        transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28356'),
                                           QgsCoordinateReferenceSystem('EPSG:4283'), context)
        self.assertEqual(transform.sourceDatumTransformId(), 3)
        self.assertEqual(transform.destinationDatumTransformId(), 4)

        # test manual overwriting
        transform.setSourceDatumTransformId(11)
        transform.setDestinationDatumTransformId(13)
        self.assertEqual(transform.sourceDatumTransformId(), 11)
        self.assertEqual(transform.destinationDatumTransformId(), 13)

        # test that auto datum setting occurs when updating src/dest crs
        transform.setSourceCrs(QgsCoordinateReferenceSystem('EPSG:28356'))
        self.assertEqual(transform.sourceDatumTransformId(), 3)
        self.assertEqual(transform.destinationDatumTransformId(), 4)
        transform.setSourceDatumTransformId(11)
        transform.setDestinationDatumTransformId(13)

        transform.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4283'))
        self.assertEqual(transform.sourceDatumTransformId(), 3)
        self.assertEqual(transform.destinationDatumTransformId(), 4)
        transform.setSourceDatumTransformId(11)
        transform.setDestinationDatumTransformId(13)

        # delayed context set
        transform = QgsCoordinateTransform()
        self.assertEqual(transform.sourceDatumTransformId(), -1)
        self.assertEqual(transform.destinationDatumTransformId(), -1)
        transform.setSourceCrs(QgsCoordinateReferenceSystem('EPSG:28356'))
        transform.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4283'))
        self.assertEqual(transform.sourceDatumTransformId(), -1)
        self.assertEqual(transform.destinationDatumTransformId(), -1)
        transform.setContext(context)
        self.assertEqual(transform.sourceDatumTransformId(), 3)
        self.assertEqual(transform.destinationDatumTransformId(), 4)
        self.assertEqual(list(transform.context().sourceDestinationDatumTransforms().keys()), [('EPSG:28356', 'EPSG:4283')])

开发者ID:AlisterH，项目名称:Quantum-GIS，代码行数:60，代码来源:test_qgscoordinatetransform.py

示例5: testTransformContextSignalIsEmitted

    def testTransformContextSignalIsEmitted(self):
        """Test that when a project transform context changes a transformContextChanged signal is emitted"""

        p = QgsProject()
        spy = QSignalSpy(p.transformContextChanged)
        ctx = QgsCoordinateTransformContext()
        ctx.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857), 1234, 1235)
        p.setTransformContext(ctx)
        self.assertEqual(len(spy), 1)

开发者ID:boundlessgeo，项目名称:QGIS，代码行数:9，代码来源:test_qgsproject.py

示例6: TestQgsRasterLayerTransformContext

class TestQgsRasterLayerTransformContext(unittest.TestCase):

    def setUp(self):
        """Prepare tc"""
        super(TestQgsRasterLayerTransformContext, self).setUp()
        self.ctx = QgsCoordinateTransformContext()
        self.ctx.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857), 1234, 1235)
        self.rpath = os.path.join(unitTestDataPath(), 'landsat.tif')

    def testTransformContextIsSetInCtor(self):
        """Test transform context can be set from ctor"""

        rl = QgsRasterLayer(self.rpath, 'raster')
        self.assertFalse(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))

        options = QgsRasterLayer.LayerOptions(transformContext=self.ctx)
        rl = QgsRasterLayer(self.rpath, 'raster', 'gdal', options)
        self.assertTrue(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))

    def testTransformContextInheritsFromProject(self):
        """Test that when a layer is added to a project it inherits its context"""

        rl = QgsRasterLayer(self.rpath, 'raster')
        self.assertFalse(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))

        p = QgsProject()
        self.assertFalse(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
        p.setTransformContext(self.ctx)
        self.assertTrue(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))

        p.addMapLayers([rl])
        self.assertTrue(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))

    def testTransformContextIsSyncedFromProject(self):
        """Test that when a layer is synced when project context changes"""

        rl = QgsRasterLayer(self.rpath, 'raster')
        self.assertFalse(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))

        p = QgsProject()
        self.assertFalse(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
        p.setTransformContext(self.ctx)
        self.assertTrue(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))

        p.addMapLayers([rl])
        self.assertTrue(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))

        # Now change the project context
        tc2 = QgsCoordinateTransformContext()
        p.setTransformContext(tc2)
        self.assertFalse(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
        self.assertFalse(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
        p.setTransformContext(self.ctx)
        self.assertTrue(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
        self.assertTrue(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))

开发者ID:m-kuhn，项目名称:QGIS，代码行数:55，代码来源:test_qgsrasterlayer.py

示例7: testCalculateSourceDest

    def testCalculateSourceDest(self):
        context = QgsCoordinateTransformContext()

        #empty context
        self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
                                                          QgsCoordinateReferenceSystem('EPSG:4283')),
                         QgsDatumTransform.TransformPair(-1, -1))

        #add specific source/dest pair - should take precedence
        context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'),
                                                   QgsCoordinateReferenceSystem('EPSG:4283'),
                                                   3, 4)
        self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:28356'),
                                                          QgsCoordinateReferenceSystem('EPSG:4283')),
                         QgsDatumTransform.TransformPair(3, 4))
        self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
                                                          QgsCoordinateReferenceSystem('EPSG:4283')),
                         QgsDatumTransform.TransformPair(-1, -1))
        self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:28356'),
                                                          QgsCoordinateReferenceSystem('EPSG:3111')),
                         QgsDatumTransform.TransformPair(-1, -1))
        # check that reverse transforms are automatically supported
        self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:4283'),
                                                          QgsCoordinateReferenceSystem('EPSG:28356')),
                         QgsDatumTransform.TransformPair(4, 3))

开发者ID:alexbruy，项目名称:QGIS，代码行数:25，代码来源:test_qgscoordinatetransformcontext.py

示例8: testCalculateSourceDestProj6

    def testCalculateSourceDestProj6(self):
        context = QgsCoordinateTransformContext()

        # empty context
        self.assertEqual(context.calculateCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:3111'),
                                                              QgsCoordinateReferenceSystem('EPSG:4283')),
                         '')

        # add specific source/dest pair - should take precedence
        context.addCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:28356'),
                                       QgsCoordinateReferenceSystem('EPSG:4283'),
                                       'proj 1')
        self.assertEqual(context.calculateCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:28356'),
                                                              QgsCoordinateReferenceSystem('EPSG:4283')),
                         'proj 1')
        self.assertEqual(context.calculateCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:3111'),
                                                              QgsCoordinateReferenceSystem('EPSG:4283')),
                         '')
        self.assertEqual(context.calculateCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:28356'),
                                                              QgsCoordinateReferenceSystem('EPSG:3111')),
                         '')
        # check that reverse transforms are automatically supported
        self.assertEqual(context.calculateCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:4283'),
                                                              QgsCoordinateReferenceSystem('EPSG:28356')),
                         'proj 1')

开发者ID:digitalsatori，项目名称:QGIS，代码行数:25，代码来源:test_qgscoordinatetransformcontext.py

示例9: testContextProj6

    def testContextProj6(self):
        """
        Various tests to ensure that datum transforms are correctly set respecting context
        """
        context = QgsCoordinateTransformContext()
        context.addCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:28356'),
                                       QgsCoordinateReferenceSystem('EPSG:4283'),
                                       'proj')

        transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28354'), QgsCoordinateReferenceSystem('EPSG:28353'), context)
        self.assertEqual(list(transform.context().coordinateOperations().keys()), [('EPSG:28356', 'EPSG:4283')])

        # should be no coordinate operation
        self.assertEqual(transform.coordinateOperation(), '')

        # matching source
        transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28356'), QgsCoordinateReferenceSystem('EPSG:28353'), context)
        self.assertEqual(transform.coordinateOperation(), '')
        # matching dest
        transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28354'),
                                           QgsCoordinateReferenceSystem('EPSG:4283'), context)
        self.assertEqual(transform.coordinateOperation(), '')
        # matching src/dest pair
        transform = QgsCoordinateTransform(QgsCoordinateReferenceSystem('EPSG:28356'),
                                           QgsCoordinateReferenceSystem('EPSG:4283'), context)
        self.assertEqual(transform.coordinateOperation(), 'proj')

        # test manual overwriting
        transform.setCoordinateOperation('proj2')
        self.assertEqual(transform.coordinateOperation(), 'proj2')

        # test that auto operation setting occurs when updating src/dest crs
        transform.setSourceCrs(QgsCoordinateReferenceSystem('EPSG:28356'))
        self.assertEqual(transform.coordinateOperation(), 'proj')
        transform.setCoordinateOperation('proj2')

        transform.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4283'))
        self.assertEqual(transform.coordinateOperation(), 'proj')
        transform.setCoordinateOperation('proj2')

        # delayed context set
        transform = QgsCoordinateTransform()
        self.assertEqual(transform.coordinateOperation(), '')
        transform.setSourceCrs(QgsCoordinateReferenceSystem('EPSG:28356'))
        transform.setDestinationCrs(QgsCoordinateReferenceSystem('EPSG:4283'))
        self.assertEqual(transform.coordinateOperation(), '')
        transform.setContext(context)
        self.assertEqual(transform.coordinateOperation(), 'proj')
        self.assertEqual(list(transform.context().coordinateOperations().keys()), [('EPSG:28356', 'EPSG:4283')])

开发者ID:digitalsatori，项目名称:QGIS，代码行数:49，代码来源:test_qgscoordinatetransform.py

示例10: testMissingTransforms

    def testMissingTransforms(self):
        # fudge context xml with a missing transform
        doc = QDomDocument("testdoc")
        elem = doc.createElement("test")
        contextElem = doc.createElement("transformContext")
        transformElem = doc.createElement("srcDest")
        transformElem.setAttribute("source", 'EPSG:4204')
        transformElem.setAttribute("dest", 'EPSG:4326')
        transformElem.setAttribute("sourceTransform", 'not valid')
        transformElem.setAttribute("destTransform", 'not valid 2')
        contextElem.appendChild(transformElem)

        elem2 = doc.createElement("test2")
        elem2.appendChild(contextElem)

        # restore from xml
        context2 = QgsCoordinateTransformContext()
        ok, errors = context2.readXml(elem2, QgsReadWriteContext())
        self.assertFalse(ok)

        # check result
        self.assertEqual(errors, ['not valid', 'not valid 2'])

开发者ID:alexbruy，项目名称:QGIS，代码行数:22，代码来源:test_qgscoordinatetransformcontext.py

示例11: testEqualOperator

    def testEqualOperator(self):
        context1 = QgsCoordinateTransformContext()
        context2 = QgsCoordinateTransformContext()
        self.assertTrue(context1 == context2)

        context1.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:3111'),
                                                    QgsCoordinateReferenceSystem('EPSG:4283'), 1, 2)
        self.assertFalse(context1 == context2)

        context2.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:3111'),
                                                    QgsCoordinateReferenceSystem('EPSG:4283'), 1, 2)
        self.assertTrue(context1 == context2)

开发者ID:alexbruy，项目名称:QGIS，代码行数:12，代码来源:test_qgscoordinatetransformcontext.py

示例12: testEqualOperatorProj6

    def testEqualOperatorProj6(self):
        context1 = QgsCoordinateTransformContext()
        context2 = QgsCoordinateTransformContext()
        self.assertTrue(context1 == context2)

        context1.addCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:3111'),
                                        QgsCoordinateReferenceSystem('EPSG:4283'), 'p1')
        self.assertFalse(context1 == context2)

        context2.addCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:3111'),
                                        QgsCoordinateReferenceSystem('EPSG:4283'), 'p1')
        self.assertTrue(context1 == context2)

开发者ID:digitalsatori，项目名称:QGIS，代码行数:12，代码来源:test_qgscoordinatetransformcontext.py

示例13: testSourceDestinationDatumTransformsProj6

    def testSourceDestinationDatumTransformsProj6(self):
        context = QgsCoordinateTransformContext()
        self.assertEqual(context.sourceDestinationDatumTransforms(), {})
        proj_string = '+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.assertFalse(
            context.hasTransform(QgsCoordinateReferenceSystem('EPSG:3111'), QgsCoordinateReferenceSystem('EPSG:4283')))
        self.assertTrue(context.addCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:3111'),
                                                       QgsCoordinateReferenceSystem('EPSG:4283'), proj_string))
        self.assertTrue(
            context.hasTransform(QgsCoordinateReferenceSystem('EPSG:3111'), QgsCoordinateReferenceSystem('EPSG:4283')))
        self.assertFalse(
            context.hasTransform(QgsCoordinateReferenceSystem('EPSG:3111'), QgsCoordinateReferenceSystem('EPSG:4326')))
        self.assertFalse(
            context.hasTransform(QgsCoordinateReferenceSystem('EPSG:3113'), QgsCoordinateReferenceSystem('EPSG:4283')))
        self.assertEqual(context.coordinateOperations(), {('EPSG:3111', 'EPSG:4283'): proj_string})
        proj_string_2 = '+proj=pipeline +step +inv +proj=utm +zone=56 +south +ellps=GRS80 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'
        self.assertTrue(context.addCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:28356'),
                                                       QgsCoordinateReferenceSystem(4283), proj_string_2))
        self.assertEqual(context.coordinateOperations(), {('EPSG:3111', 'EPSG:4283'): proj_string,
                                                          ('EPSG:28356', 'EPSG:4283'): proj_string_2})
        proj_string_3 = '+proj=pipeline +step +inv +proj=utm +zone=56 +south +ellps=GRS80 +step +proj=utm +zone=57 +south +ellps=GRS80'
        self.assertTrue(context.addCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:28356'),
                                                       QgsCoordinateReferenceSystem(28357), proj_string_3))
        self.assertEqual(context.coordinateOperations(), {('EPSG:3111', 'EPSG:4283'): proj_string,
                                                          ('EPSG:28356', 'EPSG:4283'): proj_string_2,
                                                          ('EPSG:28356', 'EPSG:28357'): proj_string_3})
        self.assertTrue(context.addCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:28356'),
                                                       QgsCoordinateReferenceSystem('EPSG:28357'),
                                                       'some other proj string'))
        self.assertEqual(context.coordinateOperations(), {('EPSG:3111', 'EPSG:4283'): proj_string,
                                                          ('EPSG:28356', 'EPSG:4283'): proj_string_2,
                                                          ('EPSG:28356', 'EPSG:28357'): 'some other proj string'})

        # invalid additions
        self.assertFalse(context.addCoordinateOperation(QgsCoordinateReferenceSystem(),
                                                        QgsCoordinateReferenceSystem('EPSG:28357'), 'bad proj'))
        self.assertEqual(context.coordinateOperations(), {('EPSG:3111', 'EPSG:4283'): proj_string,
                                                          ('EPSG:28356', 'EPSG:4283'): proj_string_2,
                                                          ('EPSG:28356', 'EPSG:28357'): 'some other proj string'})
        self.assertFalse(context.addCoordinateOperation(QgsCoordinateReferenceSystem('EPSG:3111'),
                                                        QgsCoordinateReferenceSystem(), 'bad proj'))
        self.assertEqual(context.coordinateOperations(), {('EPSG:3111', 'EPSG:4283'): proj_string,
                                                          ('EPSG:28356', 'EPSG:4283'): proj_string_2,
                                                          ('EPSG:28356', 'EPSG:28357'): 'some other proj string'})

        # indicate no transform required
        self.assertTrue(context.addCoordinateOperation(QgsCoordinateReferenceSystem(28357),
                                                       QgsCoordinateReferenceSystem(28356), ''))
        self.assertEqual(context.coordinateOperations(), {('EPSG:3111', 'EPSG:4283'): proj_string,
                                                          ('EPSG:28356', 'EPSG:4283'): proj_string_2,
                                                          ('EPSG:28356', 'EPSG:28357'): 'some other proj string',
                                                          ('EPSG:28357', 'EPSG:28356'): ''})

        # remove non-existing
        context.removeCoordinateOperation(QgsCoordinateReferenceSystem(3113), QgsCoordinateReferenceSystem(3111))
        self.assertEqual(context.coordinateOperations(), {('EPSG:3111', 'EPSG:4283'): proj_string,
                                                          ('EPSG:28356', 'EPSG:4283'): proj_string_2,
                                                          ('EPSG:28356', 'EPSG:28357'): 'some other proj string',
                                                          ('EPSG:28357', 'EPSG:28356'): ''})

        # remove existing
        context.removeCoordinateOperation(QgsCoordinateReferenceSystem(3111),
                                          QgsCoordinateReferenceSystem(4283))
        self.assertEqual(context.coordinateOperations(), {('EPSG:28356', 'EPSG:4283'): proj_string_2,
                                                          ('EPSG:28356', 'EPSG:28357'): 'some other proj string',
                                                          ('EPSG:28357', 'EPSG:28356'): ''})
        context.removeCoordinateOperation(QgsCoordinateReferenceSystem(28356),
                                          QgsCoordinateReferenceSystem(28357))
        self.assertEqual(context.coordinateOperations(), {('EPSG:28356', 'EPSG:4283'): proj_string_2,
                                                          ('EPSG:28357', 'EPSG:28356'): ''})

        context.clear()
        self.assertEqual(context.coordinateOperations(), {})

开发者ID:digitalsatori，项目名称:QGIS，代码行数:73，代码来源:test_qgscoordinatetransformcontext.py

示例14: setUp

 def setUp(self):
     """Prepare tc"""
     super(TestQgsRasterLayerTransformContext, self).setUp()
     self.ctx = QgsCoordinateTransformContext()
     self.ctx.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857), 1234, 1235)
     self.rpath = os.path.join(unitTestDataPath(), 'landsat.tif')

开发者ID:m-kuhn，项目名称:QGIS，代码行数:6，代码来源:test_qgsrasterlayer.py

示例15: testReadWriteSettingsProj6

    def testReadWriteSettingsProj6(self):
        context = QgsCoordinateTransformContext()
        context.readSettings()

        proj_1 = '+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=intl +step +proj=helmert +x=-18.944 +y=-379.364 +z=-24.063 +rx=-0.04 +ry=0.764 +rz=-6.431 +s=3.657 +convention=coordinate_frame +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'
        proj_2 = '+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=intl +step +proj=helmert +x=-150 +y=-250 +z=-1 +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1'

        # should be empty
        self.assertEqual(context.coordinateOperations(), {})

        self.assertTrue(context.addCoordinateOperation(QgsCoordinateReferenceSystem(4204),
                                                       QgsCoordinateReferenceSystem(4326), proj_1))
        self.assertTrue(context.addCoordinateOperation(QgsCoordinateReferenceSystem(4205),
                                                       QgsCoordinateReferenceSystem(4326), proj_2))

        self.assertEqual(context.coordinateOperations(),
                         {('EPSG:4204', 'EPSG:4326'): proj_1,
                          ('EPSG:4205', 'EPSG:4326'): proj_2})

        # save to settings
        context.writeSettings()

        # restore from settings
        context2 = QgsCoordinateTransformContext()
        self.assertEqual(context2.coordinateOperations(), {})
        context2.readSettings()

        # check result
        self.assertEqual(context2.coordinateOperations(),
                         {('EPSG:4204', 'EPSG:4326'): proj_1,
                          ('EPSG:4205', 'EPSG:4326'): proj_2})

开发者ID:digitalsatori，项目名称:QGIS，代码行数:31，代码来源:test_qgscoordinatetransformcontext.py

示例16: testDestDatumTransforms

    def testDestDatumTransforms(self):
        context = QgsCoordinateTransformContext()
        self.assertEqual(context.destinationDatumTransforms(), {})
        self.assertTrue(context.addDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:3111'), 1))
        self.assertEqual(context.destinationDatumTransforms(), {'EPSG:3111': 1})
        self.assertTrue(context.addDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 2))
        self.assertEqual(context.destinationDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 2})
        self.assertTrue(context.addDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 3))
        self.assertEqual(context.destinationDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3})
        self.assertTrue(context.addDestinationDatumTransform(QgsCoordinateReferenceSystem(28356), 3))
        self.assertEqual(context.destinationDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3})

        # invalid crs should fail
        self.assertFalse(context.addDestinationDatumTransform(QgsCoordinateReferenceSystem(), 4))
        self.assertEqual(context.destinationDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3})

        # indicate no transform required
        self.assertTrue(context.addDestinationDatumTransform(QgsCoordinateReferenceSystem(28357), -1))
        self.assertEqual(context.destinationDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3, 'EPSG:28357': -1})

        # removing non-existing
        context.removeSourceDatumTransform(QgsCoordinateReferenceSystem(28354))
        self.assertEqual(context.destinationDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 3, 'EPSG:28357': -1})

        # remove existing
        context.removeDestinationDatumTransform(QgsCoordinateReferenceSystem(28356))
        self.assertEqual(context.destinationDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28357': -1})

        context.clear()
        self.assertEqual(context.destinationDatumTransforms(), {})

开发者ID:alexbruy，项目名称:QGIS，代码行数:30，代码来源:test_qgscoordinatetransformcontext.py

示例17: testReadWriteSettings

    def testReadWriteSettings(self):
        context = QgsCoordinateTransformContext()
        context.readSettings()

        source_id_1 = QgsDatumTransform.datumTransformations(QgsCoordinateReferenceSystem(4204),
                                                             QgsCoordinateReferenceSystem(4326))[0].sourceTransformId
        dest_id_1 = QgsDatumTransform.datumTransformations(QgsCoordinateReferenceSystem(4204),
                                                           QgsCoordinateReferenceSystem(4326))[0].destinationTransformId

        source_id_2 = QgsDatumTransform.datumTransformations(QgsCoordinateReferenceSystem(4205),
                                                             QgsCoordinateReferenceSystem(4326))[0].sourceTransformId
        dest_id_2 = QgsDatumTransform.datumTransformations(QgsCoordinateReferenceSystem(4205),
                                                           QgsCoordinateReferenceSystem(4326))[0].destinationTransformId

        # should be empty
        self.assertEqual(context.sourceDestinationDatumTransforms(), {})

        self.assertTrue(context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:4204'),
                                                                   QgsCoordinateReferenceSystem('EPSG:4326'), source_id_1, dest_id_1))
        self.assertTrue(context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:4205'),
                                                                   QgsCoordinateReferenceSystem(4326), source_id_2, dest_id_2))

        self.assertEqual(context.sourceDestinationDatumTransforms(),
                         {('EPSG:4204', 'EPSG:4326'): QgsDatumTransform.TransformPair(source_id_1, dest_id_1),
                          ('EPSG:4205', 'EPSG:4326'): QgsDatumTransform.TransformPair(source_id_2, dest_id_2)})

        # save to settings
        context.writeSettings()

        # restore from settings
        context2 = QgsCoordinateTransformContext()
        self.assertEqual(context2.sourceDestinationDatumTransforms(), {})
        context2.readSettings()

        # check result
        self.assertEqual(context2.sourceDestinationDatumTransforms(),
                         {('EPSG:4204', 'EPSG:4326'): QgsDatumTransform.TransformPair(source_id_1, dest_id_1),
                          ('EPSG:4205', 'EPSG:4326'): QgsDatumTransform.TransformPair(source_id_2, dest_id_2)})

开发者ID:alexbruy，项目名称:QGIS，代码行数:38，代码来源:test_qgscoordinatetransformcontext.py

示例18: testWriteReadXmlSingleVariant

    def testWriteReadXmlSingleVariant(self):
        # setup a context
        context = QgsCoordinateTransformContext()
        self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:3111'), 1))
        self.assertTrue(context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 2))
        self.assertTrue(context.addDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:3113'), 11))
        self.assertTrue(context.addDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28355'), 12))
        self.assertTrue(context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:3111'),
                                                                   QgsCoordinateReferenceSystem('EPSG:4283'), 1, 2))
        self.assertTrue(context.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'),
                                                                   QgsCoordinateReferenceSystem(4283), 3, 4))

        self.assertEqual(context.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 2})
        self.assertEqual(context.destinationDatumTransforms(), {'EPSG:3113': 11, 'EPSG:28355': 12})
        self.assertEqual(context.sourceDestinationDatumTransforms(), {('EPSG:3111', 'EPSG:4283'): (1, 2),
                                                                      ('EPSG:28356', 'EPSG:4283'): (3, 4)})

        # save to xml
        doc = QDomDocument("testdoc")
        elem = doc.createElement("test")
        context.writeXml(elem, QgsReadWriteContext())

        # restore from xml
        context2 = QgsCoordinateTransformContext()
        context2.readXml(elem, QgsReadWriteContext())

        # check result
        self.assertEqual(context2.sourceDatumTransforms(), {'EPSG:3111': 1, 'EPSG:28356': 2})
        self.assertEqual(context2.destinationDatumTransforms(), {'EPSG:3113': 11, 'EPSG:28355': 12})
        self.assertEqual(context2.sourceDestinationDatumTransforms(), {('EPSG:3111', 'EPSG:4283'): (1, 2),
                                                                       ('EPSG:28356', 'EPSG:4283'): (3, 4)})

开发者ID:alexbruy，项目名称:QGIS，代码行数:31，代码来源:test_qgscoordinatetransformcontext.py

示例19: testCalculate

    def testCalculate(self):
        context = QgsCoordinateTransformContext()

        #empty context
        self.assertEqual(context.calculateDatumTransforms(QgsCoordinateReferenceSystem('EPSG:3111'),
                                                          QgsCoordinateReferenceSystem('EPSG:4283')),
                         (-1, -1))

        #add src transform
        context.addSourceDatumTransform(QgsCoordinateReferenceSystem('EPSG:28356'), 1)
        self.asser

鲜花

握手

雷人

路过

鸡蛋

该文章已有0人参与评论

请发表评论

全部评论

专题导读

More+

10-27 六六分期app的软件客服如何联系？(六六分期

11-06 可心卡盟:win10系统火狐flash插件崩溃怎么

11-06 亲亲特价:怎么删除回收站图标

11-06 济南大学虚拟社区:鲁大师节能降温的具体办

11-06 xlueops.exe:无线网络安装向导

11-06 女斗合众国:win7系统cf与主机连接不稳定怎

11-06 0xc000022-[cf烟雾头]cf怎么调烟雾头

11-06 qizideyouhuo:应用程序无法正常启动0xc0000

11-06 ipz-185:win7系统vcf文件怎么打开

11-06 傻哥蹦迪:win10系统s4怎么打开usb调试

11-06 八神浩树gtaste:回收站清空了怎么恢复

11-06 妖尾之黑色守护:win10系统电脑没有1440x900

11-06 校园至尊魔王小说:win7系统浏览网页时字体

11-06 女斗合众国:win10系统访问共享文件夹提示请

11-06 tokyo hot n0654:恢复win7系统默认字体一招

11-06 雨酷仙境:设置win7系统转移临时文件夹腾出

11-06 阿穆纳伊之杖:win7系统开始菜单在右边还原

11-06 tunespotting:win10系统火狐flash插件总是

11-06 甘尔葛分析师：计谋网站seo关键词暴涨有什

11-06 蔡贵霖: 计谋网站seo关键词暴涨有什么秘密

11-06 博益网首页:ao3网页版进入不了解决方法

11-06 漏斗子专栏: 网站数据分析小白易懂精华篇

11-06 见证双虹怎么做:win7系统开启telnet命令的

11-06 颾狐蝶蜋:系统资源不足无法完成请求的服务

11-06 国光中学校歌:提交网站到alexa查询详细步骤

11-06 西安有情天:静态网页和动态网页的区别

11-06 红木雅尚斋:外部链接构造对网站的好处

11-06 前官礼遇：防止域名劫持–增强域安全性的10

11-06 密传二转答案: 中文分词算法有哪些

11-06 金泉家园邮编:百度快照劫持的表现及应对方

Python core.QgsCredentials类代码示例发布时间：2022-05-26

Python core.QgsCoordinateTransform类代码示例发布时间：2022-05-26

Python util.grid_equal函数代码示例

1 Python 入门教程

Python入门教程 Python 是一种解释型、面向对象、动态数据类型的高级程序设计语言。 P

阅读：13787|2022-01-22

2 Python wikiutil.getFrontPage函数代码示例

Python wikiutil.getFrontPage函数代码示例

阅读：10177|2022-05-24

3 Python 简介

Python 简介 Python 是一个高层次的结合了解释性、编译性、互动性和面向对象的脚本

阅读：4074|2022-01-22

4 Python tests.group函数代码示例

Python tests.group函数代码示例

阅读：4039|2022-05-27

5 Python util.check_if_user_has_permission

Python util.check_if_user_has_permission函数代码示例

阅读：3832|2022-05-27

6 Python 操练实例98

Python 练习实例98 Python 100例题目：从键盘输入一个字符串，将小写字母全部转换成大

阅读：3508|2022-01-22

7 Python 环境搭建

Python 环境搭建本章节我们将向大家介绍如何在本地搭建 Python 开发环境。 Py

阅读：3029|2022-01-22

8 Python output.darkgreen函数代码示例

Python output.darkgreen函数代码示例

阅读：2646|2022-05-25

9 Python 基础语法

Python 基础语法 Python 语言与 Perl，C 和 Java 等语言有许多相似之处。但是，也

阅读：2636|2022-01-22

10 Python 中文编码

Python 中文编码前面章节中我们已经学会了如何用 Python 输出 Hello, World!，英文没

阅读：2293|2022-01-22

客服电话

电子邮件

Python core.QgsCoordinateTransformContext类代码示例

示例1: testWriteReadXml

示例2: testMissingTransformsProj6

示例3: testWriteReadXmlProj6

示例4: testContext

示例5: testTransformContextSignalIsEmitted

示例6: TestQgsRasterLayerTransformContext

示例7: testCalculateSourceDest

示例8: testCalculateSourceDestProj6

示例9: testContextProj6

示例10: testMissingTransforms

示例11: testEqualOperator

示例12: testEqualOperatorProj6

示例13: testSourceDestinationDatumTransformsProj6

示例14: setUp

示例15: testReadWriteSettingsProj6

示例16: testDestDatumTransforms

示例17: testReadWriteSettings

示例18: testWriteReadXmlSingleVariant

示例19: testCalculate

请发表评论

全部评论

上一篇：

下一篇：

Python util.grid_equal函数代码示例

Python util.get_worker_name函数代码示例

Python util.get_webmention_target函数代

Python util.get_uuid函数代码示例

Python util.get_type_by_name函数代码示例

Python util.grid_equal函数代码示例

Python util.get_worker_name函数代码示例

Python util.get_webmention_target函数代

Python util.get_uuid函数代码示例

Python util.get_type_by_name函数代码示例

Python util.get_stdout函数代码示例

关于我们

产品与服务

解决方案

139-2527-9053