Python core.QgsVectorSimplifyMethod类代码示例

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本文整理汇总了Python中qgis.core.QgsVectorSimplifyMethod类的典型用法代码示例。如果您正苦于以下问题：Python QgsVectorSimplifyMethod类的具体用法？Python QgsVectorSimplifyMethod怎么用？Python QgsVectorSimplifyMethod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QgsVectorSimplifyMethod类的3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: init

    def __init__(self, methodName):
        """Run once on class initialization."""
        unittest.TestCase.__init__(self, methodName)

        self.iface = get_iface()

        # initialize class MapRegistry, Canvas, MapRenderer, Map and PAL
        self.mMapRegistry = QgsMapLayerRegistry.instance()

        # create point layer
        myShpFile = os.path.join(TEST_DATA_DIR, 'points.shp')
        self.mPointLayer = QgsVectorLayer(myShpFile, 'Points', 'ogr')
        self.mMapRegistry.addMapLayer(self.mPointLayer)

        self.mSimplifyMethod = QgsVectorSimplifyMethod()
        self.mSimplifyMethod.setSimplifyHints(QgsVectorSimplifyMethod.NoSimplification)

        # create polygon layer
        myShpFile = os.path.join(TEST_DATA_DIR, 'polys.shp')
        self.mPolygonLayer = QgsVectorLayer(myShpFile, 'Polygons', 'ogr')
        self.mPolygonLayer.setSimplifyMethod(self.mSimplifyMethod)
        self.mMapRegistry.addMapLayer(self.mPolygonLayer)

        # create line layer
        myShpFile = os.path.join(TEST_DATA_DIR, 'lines.shp')
        self.mLineLayer = QgsVectorLayer(myShpFile, 'Lines', 'ogr')
        self.mLineLayer.setSimplifyMethod(self.mSimplifyMethod)
        self.mMapRegistry.addMapLayer(self.mLineLayer)

        # create two raster layers
        myRasterFile = os.path.join(TEST_DATA_DIR, 'rgb256x256.png')
        self.mRasterLayer1 = QgsRasterLayer(myRasterFile, "raster1")
        self.mRasterLayer2 = QgsRasterLayer(myRasterFile, "raster2")
        myMultiBandRenderer1 = QgsMultiBandColorRenderer(self.mRasterLayer1.dataProvider(), 1, 2, 3)
        self.mRasterLayer1.setRenderer(myMultiBandRenderer1)
        self.mMapRegistry.addMapLayer(self.mRasterLayer1)
        myMultiBandRenderer2 = QgsMultiBandColorRenderer(self.mRasterLayer2.dataProvider(), 1, 2, 3)
        self.mRasterLayer2.setRenderer(myMultiBandRenderer2)
        self.mMapRegistry.addMapLayer(self.mRasterLayer2)

        # to match blend modes test comparisons background
        self.mCanvas = self.iface.mapCanvas()
        self.mCanvas.setCanvasColor(QColor(152, 219, 249))
        self.mMap = self.mCanvas.map()
        self.mMap.resize(QSize(400, 400))
        self.mapSettings = self.mCanvas.mapSettings()
        self.mapSettings.setOutputSize(QSize(400, 400))
        self.mapSettings.setOutputDpi(96)

        self.extent = QgsRectangle(-118.8888888888887720, 22.8002070393376783, -83.3333333333331581, 46.8719806763287536)

开发者ID:dudds6699，项目名称:QGIS，代码行数:50，代码来源:test_qgsblendmodes.py

示例2: init

    def __init__(self, methodName):
        """Run once on class initialisation."""
        unittest.TestCase.__init__(self, methodName)

        # initialize class MapRegistry, Canvas, MapRenderer, Map and PAL
        self.mMapRegistry = QgsMapLayerRegistry.instance()

        # create point layer
        myShpFile = os.path.join(TEST_DATA_DIR, 'points.shp')
        self.mPointLayer = QgsVectorLayer(myShpFile, 'Points', 'ogr')
        self.mMapRegistry.addMapLayer(self.mPointLayer)

        self.mSimplifyMethod = QgsVectorSimplifyMethod() ;
        self.mSimplifyMethod.setSimplifyHints(QgsVectorSimplifyMethod.NoSimplification);

        # create polygon layer
        myShpFile = os.path.join(TEST_DATA_DIR, 'polys.shp')
        self.mPolygonLayer = QgsVectorLayer(myShpFile, 'Polygons', 'ogr')
        self.mPolygonLayer.setSimplifyMethod(self.mSimplifyMethod)
        self.mMapRegistry.addMapLayer(self.mPolygonLayer)

        # create line layer
        myShpFile = os.path.join(TEST_DATA_DIR, 'lines.shp')
        self.mLineLayer = QgsVectorLayer(myShpFile, 'Lines', 'ogr')
        self.mLineLayer.setSimplifyMethod(self.mSimplifyMethod)
        self.mMapRegistry.addMapLayer(self.mLineLayer)

        # create two raster layers
        myRasterFile = os.path.join(TEST_DATA_DIR, 'landsat.tif')
        self.mRasterLayer1 = QgsRasterLayer(myRasterFile, "raster1")
        self.mRasterLayer2 = QgsRasterLayer(myRasterFile, "raster2")
        myMultiBandRenderer1 = QgsMultiBandColorRenderer(self.mRasterLayer1.dataProvider(), 2, 3, 4)
        self.mRasterLayer1.setRenderer(myMultiBandRenderer1)
        self.mMapRegistry.addMapLayer(self.mRasterLayer1)
        myMultiBandRenderer2 = QgsMultiBandColorRenderer(self.mRasterLayer2.dataProvider(), 2, 3, 4)
        self.mRasterLayer2.setRenderer(myMultiBandRenderer2)
        self.mMapRegistry.addMapLayer(self.mRasterLayer2)

        # to match blend modes test comparisons background
        self.mCanvas = CANVAS
        self.mCanvas.setCanvasColor(QColor(152, 219, 249))
        self.mMap = self.mCanvas.map()
        self.mMap.resize(QSize(400, 400))
        self.mapSettings = self.mCanvas.mapSettings()
        self.mapSettings.setOutputSize(QSize(400, 400))

开发者ID:CSRedRat，项目名称:QGIS，代码行数:45，代码来源:test_qgsblendmodes.py

示例3: TestQgsBlendModes

class TestQgsBlendModes(TestCase):

    def __init__(self, methodName):
        """Run once on class initialisation."""
        unittest.TestCase.__init__(self, methodName)

        # initialize class MapRegistry, Canvas, MapRenderer, Map and PAL
        self.mMapRegistry = QgsMapLayerRegistry.instance()

        # create point layer
        myShpFile = os.path.join(TEST_DATA_DIR, 'points.shp')
        self.mPointLayer = QgsVectorLayer(myShpFile, 'Points', 'ogr')
        self.mMapRegistry.addMapLayer(self.mPointLayer)

        self.mSimplifyMethod = QgsVectorSimplifyMethod() ;
        self.mSimplifyMethod.setSimplifyHints(QgsVectorSimplifyMethod.NoSimplification);

        # create polygon layer
        myShpFile = os.path.join(TEST_DATA_DIR, 'polys.shp')
        self.mPolygonLayer = QgsVectorLayer(myShpFile, 'Polygons', 'ogr')
        self.mPolygonLayer.setSimplifyMethod(self.mSimplifyMethod)
        self.mMapRegistry.addMapLayer(self.mPolygonLayer)

        # create line layer
        myShpFile = os.path.join(TEST_DATA_DIR, 'lines.shp')
        self.mLineLayer = QgsVectorLayer(myShpFile, 'Lines', 'ogr')
        self.mLineLayer.setSimplifyMethod(self.mSimplifyMethod)
        self.mMapRegistry.addMapLayer(self.mLineLayer)

        # create two raster layers
        myRasterFile = os.path.join(TEST_DATA_DIR, 'landsat.tif')
        self.mRasterLayer1 = QgsRasterLayer(myRasterFile, "raster1")
        self.mRasterLayer2 = QgsRasterLayer(myRasterFile, "raster2")
        myMultiBandRenderer1 = QgsMultiBandColorRenderer(self.mRasterLayer1.dataProvider(), 2, 3, 4)
        self.mRasterLayer1.setRenderer(myMultiBandRenderer1)
        self.mMapRegistry.addMapLayer(self.mRasterLayer1)
        myMultiBandRenderer2 = QgsMultiBandColorRenderer(self.mRasterLayer2.dataProvider(), 2, 3, 4)
        self.mRasterLayer2.setRenderer(myMultiBandRenderer2)
        self.mMapRegistry.addMapLayer(self.mRasterLayer2)

        # to match blend modes test comparisons background
        self.mCanvas = CANVAS
        self.mCanvas.setCanvasColor(QColor(152, 219, 249))
        self.mMap = self.mCanvas.map()
        self.mMap.resize(QSize(400, 400))
        self.mapSettings = self.mCanvas.mapSettings()
        self.mapSettings.setOutputSize(QSize(400, 400))

    def testVectorBlending(self):
        """Test that blend modes work for vector layers."""

        #Add vector layers to map
        myLayers = []
        myLayers.append(self.mLineLayer.id())
        myLayers.append(self.mPolygonLayer.id())
        self.mapSettings.setLayers(myLayers)
        self.mapSettings.setExtent(self.mPointLayer.extent())

        #Set blending modes for both layers
        self.mLineLayer.setBlendMode(QPainter.CompositionMode_Difference)
        self.mPolygonLayer.setBlendMode(QPainter.CompositionMode_Difference)

        checker = QgsRenderChecker()
        checker.setControlName("expected_vector_blendmodes")
        checker.setMapSettings(self.mapSettings)

        myResult = checker.runTest("vector_blendmodes");
        myMessage = ('vector blending failed')
        assert myResult, myMessage

        #Reset layers
        self.mLineLayer.setBlendMode(QPainter.CompositionMode_SourceOver)
        self.mPolygonLayer.setBlendMode(QPainter.CompositionMode_SourceOver)

    def testVectorFeatureBlending(self):
        """Test that feature blend modes work for vector layers."""

        #Add vector layers to map
        myLayers = []
        myLayers.append(self.mLineLayer.id())
        myLayers.append(self.mPolygonLayer.id())
        self.mapSettings.setLayers(myLayers)
        self.mapSettings.setExtent(self.mPointLayer.extent())

        #Set feature blending for line layer
        self.mLineLayer.setFeatureBlendMode(QPainter.CompositionMode_Plus)

        checker = QgsRenderChecker()
        checker.setControlName("expected_vector_featureblendmodes")
        checker.setMapSettings(self.mapSettings)

        myResult = checker.runTest("vector_featureblendmodes");
        myMessage = ('vector feature blending failed')
        assert myResult, myMessage

        #Reset layers
        self.mLineLayer.setFeatureBlendMode(QPainter.CompositionMode_SourceOver)

    def testVectorLayerTransparency(self):
        """Test that layer transparency works for vector layers."""
#.........这里部分代码省略.........

开发者ID:CSRedRat，项目名称:QGIS，代码行数:101，代码来源:test_qgsblendmodes.py

注：本文中的qgis.core.QgsVectorSimplifyMethod类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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Python core.QgsVectorSimplifyMethod类代码示例

示例1: init

示例2: init

示例3: TestQgsBlendModes

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Python core.QgsVectorSimplifyMethod类代码示例

示例1: __init__

示例2: __init__

示例3: TestQgsBlendModes

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示例1: init

示例2: init