本文整理汇总了Python中qgis.core.QgsRasterLayer.setBlendMode方法的典型用法代码示例。如果您正苦于以下问题:Python QgsRasterLayer.setBlendMode方法的具体用法?Python QgsRasterLayer.setBlendMode怎么用?Python QgsRasterLayer.setBlendMode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.QgsRasterLayer
的用法示例。
在下文中一共展示了QgsRasterLayer.setBlendMode方法的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,您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: TestQgsBlendModes
# 需要导入模块: from qgis.core import QgsRasterLayer [as 别名]
# 或者: from qgis.core.QgsRasterLayer import setBlendMode [as 别名]
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)
# create polygon layer
myShpFile = os.path.join(TEST_DATA_DIR, 'polys.shp')
self.mPolygonLayer = QgsVectorLayer(myShpFile, 'Polygons', 'ogr')
self.mMapRegistry.addMapLayer(self.mPolygonLayer)
# 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.mMapRenderer = self.mCanvas.mapRenderer()
self.mMapRenderer.setOutputSize(QSize(400, 400), 72)
def testVectorBlending(self):
"""Test that blend modes work for vector layers."""
#Add vector layers to map
myLayers = QStringList()
myLayers.append(self.mPointLayer.id())
myLayers.append(self.mPolygonLayer.id())
self.mMapRenderer.setLayerSet(myLayers)
self.mMapRenderer.setExtent(self.mPointLayer.extent())
#Set blending modes for both layers
self.mPointLayer.setBlendMode(QPainter.CompositionMode_Overlay)
self.mPolygonLayer.setBlendMode(QPainter.CompositionMode_Multiply)
checker = QgsRenderChecker()
checker.setControlName("expected_vector_blendmodes")
checker.setMapRenderer(self.mMapRenderer)
myResult = checker.runTest("vector_blendmodes");
myMessage = ('vector blending failed')
assert myResult, myMessage
def testRasterBlending(self):
"""Test that blend modes work for raster layers."""
#Add raster layers to map
myLayers = QStringList()
myLayers.append(self.mRasterLayer1.id())
myLayers.append(self.mRasterLayer2.id())
self.mMapRenderer.setLayerSet(myLayers)
self.mMapRenderer.setExtent(self.mRasterLayer1.extent())
#Set blending mode for top layer
self.mRasterLayer1.setBlendMode(QPainter.CompositionMode_Plus)
checker = QgsRenderChecker()
checker.setControlName("expected_raster_blendmodes")
checker.setMapRenderer(self.mMapRenderer)
myResult = checker.runTest("raster_blendmodes");
myMessage = ('raster blending failed')
assert myResult, myMessage
示例2: TestQgsBlendModes
# 需要导入模块: from qgis.core import QgsRasterLayer [as 别名]
# 或者: from qgis.core.QgsRasterLayer import setBlendMode [as 别名]
class TestQgsBlendModes(unittest.TestCase):
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 = QgsProject.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.mapSettings = QgsMapSettings()
self.mapSettings.setLayers([self.mRasterLayer1, self.mRasterLayer2])
self.mapSettings.setBackgroundColor(QColor(152, 219, 249))
self.mapSettings.setOutputSize(QSize(400, 400))
self.mapSettings.setOutputDpi(96)
self.extent = QgsRectangle(-118.8888888888887720, 22.8002070393376783, -83.3333333333331581, 46.8719806763287536)
def testVectorBlending(self):
"""Test that blend modes work for vector layers."""
# Add vector layers to map
myLayers = [self.mLineLayer, self.mPolygonLayer]
self.mapSettings.setLayers(myLayers)
self.mapSettings.setExtent(self.extent)
# Set blending modes for both layers
self.mLineLayer.setBlendMode(QPainter.CompositionMode_Difference)
self.mPolygonLayer.setBlendMode(QPainter.CompositionMode_Difference)
checker = QgsMultiRenderChecker()
checker.setControlName("expected_vector_blendmodes")
checker.setMapSettings(self.mapSettings)
checker.setColorTolerance(1)
myResult = checker.runTest("vector_blendmodes", 20)
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 = [self.mLineLayer, self.mPolygonLayer]
self.mapSettings.setLayers(myLayers)
self.mapSettings.setExtent(self.extent)
# Set feature blending for line layer
self.mLineLayer.setFeatureBlendMode(QPainter.CompositionMode_Plus)
checker = QgsMultiRenderChecker()
checker.setControlName("expected_vector_featureblendmodes")
checker.setMapSettings(self.mapSettings)
checker.setColorTolerance(1)
myResult = checker.runTest("vector_featureblendmodes", 20)
myMessage = ('vector feature blending failed')
assert myResult, myMessage
# Reset layers
self.mLineLayer.setFeatureBlendMode(QPainter.CompositionMode_SourceOver)
def testVectorLayerTransparency(self):
#.........这里部分代码省略.........
示例3: TestQgsBlendModes
# 需要导入模块: from qgis.core import QgsRasterLayer [as 别名]
# 或者: from qgis.core.QgsRasterLayer import setBlendMode [as 别名]
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.........