本文整理汇总了Python中qgis.core.QgsLayoutItemMap.setCrs方法的典型用法代码示例。如果您正苦于以下问题：Python QgsLayoutItemMap.setCrs方法的具体用法？Python QgsLayoutItemMap.setCrs怎么用？Python QgsLayoutItemMap.setCrs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.QgsLayoutItemMap的用法示例。
在下文中一共展示了QgsLayoutItemMap.setCrs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: testTrueNorth
# 需要导入模块: from qgis.core import QgsLayoutItemMap [as 别名]
# 或者: from qgis.core.QgsLayoutItemMap import setCrs [as 别名]
def testTrueNorth(self):
"""Test syncing picture to true north"""
layout = QgsLayout(QgsProject.instance())
map = QgsLayoutItemMap(layout)
map.attemptSetSceneRect(QRectF(0, 0, 10, 10))
map.setCrs(QgsCoordinateReferenceSystem.fromEpsgId(3575))
map.setExtent(QgsRectangle(-2126029.962, -2200807.749, -119078.102, -757031.156))
layout.addLayoutItem(map)
picture = QgsLayoutItemPicture(layout)
layout.addLayoutItem(picture)
picture.setLinkedMap(map)
self.assertEqual(picture.linkedMap(), map)
picture.setNorthMode(QgsLayoutItemPicture.TrueNorth)
self.assertAlmostEqual(picture.pictureRotation(), 37.20, 1)
# shift map
map.setExtent(QgsRectangle(2120672.293, -3056394.691, 2481640.226, -2796718.780))
self.assertAlmostEqual(picture.pictureRotation(), -38.18, 1)
# rotate map
map.setMapRotation(45)
self.assertAlmostEqual(picture.pictureRotation(), -38.18 + 45, 1)
# add an offset
picture.setNorthOffset(-10)
self.assertAlmostEqual(picture.pictureRotation(), -38.18 + 35, 1)示例2: testAsMapLayer
# 需要导入模块: from qgis.core import QgsLayoutItemMap [as 别名]
# 或者: from qgis.core.QgsLayoutItemMap import setCrs [as 别名]
def testAsMapLayer(self):
l = QgsLayout(QgsProject.instance())
l.initializeDefaults()
map = QgsLayoutItemMap(l)
map.attemptSetSceneRect(QRectF(20, 20, 200, 100))
l.addLayoutItem(map)
overviewMap = QgsLayoutItemMap(l)
overviewMap.attemptSetSceneRect(QRectF(20, 130, 70, 70))
l.addLayoutItem(overviewMap)
# zoom in
myRectangle = QgsRectangle(96, -152, 160, -120)
map.setExtent(myRectangle)
myRectangle2 = QgsRectangle(0, -256, 256, 0)
overviewMap.setExtent(myRectangle2)
overviewMap.overview().setLinkedMap(map)
layer = overviewMap.overview().asMapLayer()
self.assertIsNotNone(layer)
self.assertTrue(layer.isValid())
self.assertEqual([f.geometry().asWkt() for f in layer.getFeatures()], ['Polygon ((96 -120, 160 -120, 160 -152, 96 -152, 96 -120))'])
# check that layer has correct renderer
fill_symbol = QgsFillSymbol.createSimple({'color': '#00ff00', 'outline_color': '#ff0000', 'outline_width': '10'})
overviewMap.overview().setFrameSymbol(fill_symbol)
layer = overviewMap.overview().asMapLayer()
self.assertIsInstance(layer.renderer(), QgsSingleSymbolRenderer)
self.assertEqual(layer.renderer().symbol().symbolLayer(0).properties()['color'], '0,255,0,255')
self.assertEqual(layer.renderer().symbol().symbolLayer(0).properties()['outline_color'], '255,0,0,255')
# test layer blend mode
self.assertEqual(layer.blendMode(), QPainter.CompositionMode_SourceOver)
overviewMap.overview().setBlendMode(QPainter.CompositionMode_Clear)
layer = overviewMap.overview().asMapLayer()
self.assertEqual(layer.blendMode(), QPainter.CompositionMode_Clear)
# should have no effect
overviewMap.setMapRotation(45)
layer = overviewMap.overview().asMapLayer()
self.assertEqual([f.geometry().asWkt() for f in layer.getFeatures()], ['Polygon ((96 -120, 160 -120, 160 -152, 96 -152, 96 -120))'])
map.setMapRotation(15)
layer = overviewMap.overview().asMapLayer()
self.assertEqual([f.geometry().asWkt(0) for f in layer.getFeatures()], ['Polygon ((93 -129, 155 -112, 163 -143, 101 -160, 93 -129))'])
# with reprojection
map.setCrs(QgsCoordinateReferenceSystem('EPSG:3875'))
layer = overviewMap.overview().asMapLayer()
self.assertEqual([f.geometry().asWkt(0) for f in layer.getFeatures()], ['Polygon ((93 -129, 96 -128, 99 -127, 102 -126, 105 -126, 108 -125, 111 -124, 114 -123, 116 -123, 119 -122, 122 -121, 125 -120, 128 -119, 131 -119, 134 -118, 137 -117, 140 -116, 143 -115, 146 -115, 149 -114, 152 -113, 155 -112, 155 -114, 156 -115, 156 -117, 156 -118, 157 -120, 157 -121, 158 -123, 158 -124, 158 -126, 159 -127, 159 -128, 160 -130, 160 -131, 160 -133, 161 -134, 161 -136, 161 -137, 162 -139, 162 -140, 163 -142, 163 -143, 160 -144, 157 -145, 154 -146, 151 -146, 148 -147, 145 -148, 142 -149, 140 -149, 137 -150, 134 -151, 131 -152, 128 -153, 125 -153, 122 -154, 119 -155, 116 -156, 113 -157, 110 -157, 107 -158, 104 -159, 101 -160, 101 -158, 100 -157, 100 -155, 100 -154, 99 -152, 99 -151, 98 -149, 98 -148, 98 -146, 97 -145, 97 -144, 96 -142, 96 -141, 96 -139, 95 -138, 95 -136, 95 -135, 94 -133, 94 -132, 93 -130, 93 -129))'])
map.setCrs(overviewMap.crs())
# with invert
overviewMap.overview().setInverted(True)
layer = overviewMap.overview().asMapLayer()
self.assertEqual([f.geometry().asWkt(0) for f in layer.getFeatures()], ['Polygon ((-53 -128, 128 53, 309 -128, 128 -309, -53 -128),(93 -129, 101 -160, 163 -143, 155 -112, 93 -129))'])示例3: test_datadefined_margin
# 需要导入模块: from qgis.core import QgsLayoutItemMap [as 别名]
# 或者: from qgis.core.QgsLayoutItemMap import setCrs [as 别名]
def test_datadefined_margin(self):
polygonLayer = QgsVectorLayer('Polygon?field=margin:int', 'test_polygon', 'memory')
poly = QgsFeature(polygonLayer.fields())
poly.setAttributes([0])
poly.setGeometry(QgsGeometry.fromWkt('Polygon((30 30, 40 30, 40 40, 30 40, 30 30))'))
polygonLayer.dataProvider().addFeatures([poly])
poly = QgsFeature(polygonLayer.fields())
poly.setAttributes([10])
poly.setGeometry(QgsGeometry.fromWkt('Polygon((10 10, 20 10, 20 20, 10 20, 10 10))'))
polygonLayer.dataProvider().addFeatures([poly])
poly = QgsFeature(polygonLayer.fields())
poly.setAttributes([20])
poly.setGeometry(QgsGeometry.fromWkt('Polygon((50 50, 60 50, 60 60, 50 60, 50 50))'))
polygonLayer.dataProvider().addFeatures([poly])
QgsProject.instance().addMapLayer(polygonLayer)
layout = QgsPrintLayout(QgsProject.instance())
map = QgsLayoutItemMap(layout)
map.setCrs(polygonLayer.crs())
map.attemptSetSceneRect(QRectF(20, 20, 130, 130))
map.setFrameEnabled(True)
map.setLayers([polygonLayer])
map.setExtent(QgsRectangle(0, 0, 100, 50))
layout.addLayoutItem(map)
atlas = layout.atlas()
atlas.setCoverageLayer(polygonLayer)
atlas.setEnabled(True)
map.setAtlasDriven(True)
map.setAtlasScalingMode(QgsLayoutItemMap.Auto)
map.setAtlasMargin(77.0)
map.dataDefinedProperties().setProperty(QgsLayoutObject.MapAtlasMargin, QgsProperty.fromExpression('margin/2'))
atlas.beginRender()
atlas.first()
self.assertEqual(map.extent(), QgsRectangle(25, 30, 45, 40))
self.assertTrue(atlas.next())
self.assertEqual(map.extent(), QgsRectangle(4.5, 9.75, 25.5, 20.25))
self.assertTrue(atlas.next())
self.assertEqual(map.extent(), QgsRectangle(44, 49.5, 66, 60.5))
QgsProject.instance().removeMapLayer(polygonLayer)示例4: testMapCrs
# 需要导入模块: from qgis.core import QgsLayoutItemMap [as 别名]
# 或者: from qgis.core.QgsLayoutItemMap import setCrs [as 别名]
def testMapCrs(self):
# create layout with layout map
map_settings = QgsMapSettings()
map_settings.setLayers([self.vector_layer])
layout = QgsLayout(QgsProject.instance())
layout.initializeDefaults()
# check that new maps inherit project CRS
QgsProject.instance().setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
map = QgsLayoutItemMap(layout)
map.attemptSetSceneRect(QRectF(20, 20, 200, 100))
map.setFrameEnabled(True)
rectangle = QgsRectangle(-13838977, 2369660, -8672298, 6250909)
map.setExtent(rectangle)
map.setLayers([self.vector_layer])
layout.addLayoutItem(map)
self.assertEqual(map.crs().authid(), 'EPSG:4326')
self.assertFalse(map.presetCrs().isValid())
# overwrite CRS
map.setCrs(QgsCoordinateReferenceSystem('EPSG:3857'))
self.assertEqual(map.crs().authid(), 'EPSG:3857')
self.assertEqual(map.presetCrs().authid(), 'EPSG:3857')
checker = QgsLayoutChecker('composermap_crs3857', layout)
checker.setControlPathPrefix("composer_map")
result, message = checker.testLayout()
self.report += checker.report()
self.assertTrue(result, message)
# overwrite CRS
map.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
self.assertEqual(map.presetCrs().authid(), 'EPSG:4326')
self.assertEqual(map.crs().authid(), 'EPSG:4326')
rectangle = QgsRectangle(-124, 17, -78, 52)
map.zoomToExtent(rectangle)
checker = QgsLayoutChecker('composermap_crs4326', layout)
checker.setControlPathPrefix("composer_map")
result, message = checker.testLayout()
self.report += checker.report()
self.assertTrue(result, message)
# change back to project CRS
map.setCrs(QgsCoordinateReferenceSystem())
self.assertEqual(map.crs().authid(), 'EPSG:4326')
self.assertFalse(map.presetCrs().isValid())