def testIdentify(self):
myPath = os.path.join(unitTestDataPath(), 'landsat.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
myRasterLayer = QgsRasterLayer(myPath, myBaseName)
myMessage = 'Raster not loaded: %s' % myPath
assert myRasterLayer.isValid(), myMessage
myPoint = QgsPoint(786690, 3345803)
# print 'Extents: %s' % myRasterLayer.extent().toString()
#myResult, myRasterValues = myRasterLayer.identify(myPoint)
#assert myResult
myRasterValues = myRasterLayer.dataProvider().identify(myPoint, QgsRaster.IdentifyFormatValue).results()
assert len(myRasterValues) > 0
# Get the name of the first band
myBand = myRasterValues.keys()[0]
# myExpectedName = 'Band 1
myExpectedBand = 1
myMessage = 'Expected "%s" got "%s" for first raster band name' % (
myExpectedBand, myBand)
assert myExpectedBand == myBand, myMessage
# Convert each band value to a list of ints then to a string
myValues = myRasterValues.values()
myIntValues = []
for myValue in myValues:
myIntValues.append(int(myValue))
myValues = str(myIntValues)
myExpectedValues = '[127, 141, 112, 72, 86, 126, 156, 211, 170]'
myMessage = 'Expected: %s\nGot: %s' % (myValues, myExpectedValues)
self.assertEquals(myValues, myExpectedValues, myMessage)
def testIdentify(self):
myPath = os.path.join(unitTestDataPath(), 'landsat.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
myRasterLayer = QgsRasterLayer(myPath, myBaseName)
myMessage = 'Raster not loaded: %s' % myPath
assert myRasterLayer.isValid(), myMessage
myPoint = QgsPoint(786690, 3345803)
# print 'Extents: %s' % myRasterLayer.extent().toString()
#myResult, myRasterValues = myRasterLayer.identify(myPoint)
#assert myResult
myRasterValues = myRasterLayer.dataProvider().identify(
myPoint, QgsRaster.IdentifyFormatValue).results()
assert len(myRasterValues) > 0
# Get the name of the first band
myBand = myRasterValues.keys()[0]
# myExpectedName = 'Band 1
myExpectedBand = 1
myMessage = 'Expected "%s" got "%s" for first raster band name' % (
myExpectedBand, myBand)
assert myExpectedBand == myBand, myMessage
# Convert each band value to a list of ints then to a string
myValues = myRasterValues.values()
myIntValues = []
for myValue in myValues:
myIntValues.append(int(myValue))
myValues = str(myIntValues)
myExpectedValues = '[127, 141, 112, 72, 86, 126, 156, 211, 170]'
myMessage = 'Expected: %s\nGot: %s' % (myValues, myExpectedValues)
self.assertEquals(myValues, myExpectedValues, myMessage)
def testIssue7023(self):
"""Check if converting a raster from 1.8 to 2 works."""
myPath = os.path.join(unitTestDataPath('raster'),
'raster-pallette-crash2.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
myRasterLayer = QgsRasterLayer(myPath, myBaseName)
myMessage = 'Raster not loaded: %s' % myPath
assert myRasterLayer.isValid(), myMessage
# crash on next line
QgsMapLayerRegistry.instance().addMapLayers([myRasterLayer])
def testIssue7023(self):
"""Check if converting a raster from 1.8 to 2 works."""
myPath = os.path.join(unitTestDataPath('raster'),
'raster-pallette-crash2.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
myRasterLayer = QgsRasterLayer(myPath, myBaseName)
myMessage = 'Raster not loaded: %s' % myPath
assert myRasterLayer.isValid(), myMessage
# crash on next line
QgsMapLayerRegistry.instance().addMapLayers([myRasterLayer])
def testShaderCrash(self):
"""Check if we assign a shader and then reassign it no crash occurs."""
myPath = os.path.join(unitTestDataPath('raster'),
'band1_float32_noct_epsg4326.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
myRasterLayer = QgsRasterLayer(myPath, myBaseName)
myMessage = 'Raster not loaded: %s' % myPath
assert myRasterLayer.isValid(), myMessage
myRasterShader = QgsRasterShader()
myColorRampShader = QgsColorRampShader()
myColorRampShader.setColorRampType(QgsColorRampShader.INTERPOLATED)
myItems = []
myItem = QgsColorRampShader.ColorRampItem(
10, QColor('#ffff00'), 'foo')
myItems.append(myItem)
myItem = QgsColorRampShader.ColorRampItem(
100, QColor('#ff00ff'), 'bar')
myItems.append(myItem)
myItem = QgsColorRampShader.ColorRampItem(
1000, QColor('#00ff00'), 'kazam')
myItems.append(myItem)
myColorRampShader.setColorRampItemList(myItems)
myRasterShader.setRasterShaderFunction(myColorRampShader)
myPseudoRenderer = QgsSingleBandPseudoColorRenderer(
myRasterLayer.dataProvider(), 1, myRasterShader)
myRasterLayer.setRenderer(myPseudoRenderer)
return
######## works first time #############
myRasterShader = QgsRasterShader()
myColorRampShader = QgsColorRampShader()
myColorRampShader.setColorRampType(QgsColorRampShader.INTERPOLATED)
myItems = []
myItem = QgsColorRampShader.ColorRampItem(10,
QColor('#ffff00'), 'foo')
myItems.append(myItem)
myItem = QgsColorRampShader.ColorRampItem(100,
QColor('#ff00ff'), 'bar')
myItems.append(myItem)
myItem = QgsColorRampShader.ColorRampItem(1000,
QColor('#00ff00'), 'kazam')
myItems.append(myItem)
myColorRampShader.setColorRampItemList(myItems)
myRasterShader.setRasterShaderFunction(myColorRampShader)
######## crash on next line (fixed now)##################
myPseudoRenderer = QgsSingleBandPseudoColorRenderer(
myRasterLayer.dataProvider(), 1, myRasterShader)
myRasterLayer.setRenderer(myPseudoRenderer)
def testShaderCrash(self):
"""Check if we assign a shader and then reassign it no crash occurs."""
myPath = os.path.join(unitTestDataPath('raster'),
'band1_float32_noct_epsg4326.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
myRasterLayer = QgsRasterLayer(myPath, myBaseName)
myMessage = 'Raster not loaded: %s' % myPath
assert myRasterLayer.isValid(), myMessage
myRasterShader = QgsRasterShader()
myColorRampShader = QgsColorRampShader()
myColorRampShader.setColorRampType(QgsColorRampShader.INTERPOLATED)
myItems = []
myItem = QgsColorRampShader.ColorRampItem(10, QColor('#ffff00'), 'foo')
myItems.append(myItem)
myItem = QgsColorRampShader.ColorRampItem(100, QColor('#ff00ff'),
'bar')
myItems.append(myItem)
myItem = QgsColorRampShader.ColorRampItem(1000, QColor('#00ff00'),
'kazam')
myItems.append(myItem)
myColorRampShader.setColorRampItemList(myItems)
myRasterShader.setRasterShaderFunction(myColorRampShader)
myPseudoRenderer = QgsSingleBandPseudoColorRenderer(
myRasterLayer.dataProvider(), 1, myRasterShader)
myRasterLayer.setRenderer(myPseudoRenderer)
return
######## works first time #############
myRasterShader = QgsRasterShader()
myColorRampShader = QgsColorRampShader()
myColorRampShader.setColorRampType(QgsColorRampShader.INTERPOLATED)
myItems = []
myItem = QgsColorRampShader.ColorRampItem(10, QColor('#ffff00'), 'foo')
myItems.append(myItem)
myItem = QgsColorRampShader.ColorRampItem(100, QColor('#ff00ff'),
'bar')
myItems.append(myItem)
myItem = QgsColorRampShader.ColorRampItem(1000, QColor('#00ff00'),
'kazam')
myItems.append(myItem)
myColorRampShader.setColorRampItemList(myItems)
myRasterShader.setRasterShaderFunction(myColorRampShader)
######## crash on next line (fixed now)##################
myPseudoRenderer = QgsSingleBandPseudoColorRenderer(
myRasterLayer.dataProvider(), 1, myRasterShader)
myRasterLayer.setRenderer(myPseudoRenderer)
def test_setRenderer(self):
myPath = os.path.join(unitTestDataPath('raster'),
'band1_float32_noct_epsg4326.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
layer = QgsRasterLayer(myPath, myBaseName)
self.rendererChanged = False
layer.rendererChanged.connect(self.onRendererChanged)
rShader = QgsRasterShader()
r = QgsSingleBandPseudoColorRenderer(layer.dataProvider(), 1, rShader)
layer.setRenderer(r)
assert self.rendererChanged
assert layer.renderer() == r
def test_setRenderer(self):
myPath = os.path.join(unitTestDataPath('raster'),
'band1_float32_noct_epsg4326.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
layer = QgsRasterLayer(myPath, myBaseName)
self.rendererChanged = False
layer.rendererChanged.connect(self.onRendererChanged)
rShader = QgsRasterShader()
r = QgsSingleBandPseudoColorRenderer(layer.dataProvider(), 1, rShader)
layer.setRenderer(r)
assert self.rendererChanged
assert layer.renderer() == r
def testTransparency(self):
myPath = os.path.join(unitTestDataPath('raster'),
'band1_float32_noct_epsg4326.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
myRasterLayer = QgsRasterLayer(myPath, myBaseName)
myMessage = 'Raster not loaded: %s' % myPath
assert myRasterLayer.isValid(), myMessage
renderer = QgsSingleBandGrayRenderer(myRasterLayer.dataProvider(), 1)
myRasterLayer.setRenderer(renderer)
myRasterLayer.setContrastEnhancement(
QgsContrastEnhancement.StretchToMinimumMaximum,
QgsRaster.ContrastEnhancementMinMax)
myContrastEnhancement = myRasterLayer.renderer().contrastEnhancement()
# print ("myContrastEnhancement.minimumValue = %.17g" %
# myContrastEnhancement.minimumValue())
# print ("myContrastEnhancement.maximumValue = %.17g" %
# myContrastEnhancement.maximumValue())
# Unfortunately the minimum/maximum values calculated in C++ and Python
# are slightly different (e.g. 3.3999999521443642e+38 x
# 3.3999999521444001e+38)
# It is not clear where the precision is lost.
# We set the same values as C++.
myContrastEnhancement.setMinimumValue(-3.3319999287625854e+38)
myContrastEnhancement.setMaximumValue(3.3999999521443642e+38)
#myType = myRasterLayer.dataProvider().dataType(1);
#myEnhancement = QgsContrastEnhancement(myType);
myTransparentSingleValuePixelList = []
rasterTransparency = QgsRasterTransparency()
myTransparentPixel1 = \
QgsRasterTransparency.TransparentSingleValuePixel()
myTransparentPixel1.min = -2.5840000772112106e+38
myTransparentPixel1.max = -1.0879999684602689e+38
myTransparentPixel1.percentTransparent = 50
myTransparentSingleValuePixelList.append(myTransparentPixel1)
myTransparentPixel2 = \
QgsRasterTransparency.TransparentSingleValuePixel()
myTransparentPixel2.min = 1.359999960575336e+37
myTransparentPixel2.max = 9.520000231087593e+37
myTransparentPixel2.percentTransparent = 70
myTransparentSingleValuePixelList.append(myTransparentPixel2)
rasterTransparency.setTransparentSingleValuePixelList(
myTransparentSingleValuePixelList)
rasterRenderer = myRasterLayer.renderer()
assert rasterRenderer
rasterRenderer.setRasterTransparency(rasterTransparency)
QgsMapLayerRegistry.instance().addMapLayers([
myRasterLayer,
])
myMapRenderer = QgsMapRenderer()
myLayers = []
myLayers.append(myRasterLayer.id())
myMapRenderer.setLayerSet(myLayers)
myMapRenderer.setExtent(myRasterLayer.extent())
myChecker = QgsRenderChecker()
myChecker.setControlName("expected_raster_transparency")
myChecker.setMapRenderer(myMapRenderer)
myResultFlag = myChecker.runTest("raster_transparency_python")
assert myResultFlag, "Raster transparency rendering test failed"
def testTransparency(self):
myPath = os.path.join(unitTestDataPath('raster'),
'band1_float32_noct_epsg4326.tif')
myFileInfo = QFileInfo(myPath)
myBaseName = myFileInfo.baseName()
myRasterLayer = QgsRasterLayer(myPath, myBaseName)
myMessage = 'Raster not loaded: %s' % myPath
assert myRasterLayer.isValid(), myMessage
renderer = QgsSingleBandGrayRenderer(myRasterLayer.dataProvider(), 1)
myRasterLayer.setRenderer(renderer)
myRasterLayer.setContrastEnhancement(
QgsContrastEnhancement.StretchToMinimumMaximum,
QgsRaster.ContrastEnhancementMinMax)
myContrastEnhancement = myRasterLayer.renderer().contrastEnhancement()
# print ("myContrastEnhancement.minimumValue = %.17g" %
# myContrastEnhancement.minimumValue())
# print ("myContrastEnhancement.maximumValue = %.17g" %
# myContrastEnhancement.maximumValue())
# Unfortunately the minimum/maximum values calculated in C++ and Python
# are slightly different (e.g. 3.3999999521443642e+38 x
# 3.3999999521444001e+38)
# It is not clear where the precision is lost.
# We set the same values as C++.
myContrastEnhancement.setMinimumValue(-3.3319999287625854e+38)
myContrastEnhancement.setMaximumValue(3.3999999521443642e+38)
#myType = myRasterLayer.dataProvider().dataType(1);
#myEnhancement = QgsContrastEnhancement(myType);
myTransparentSingleValuePixelList = []
rasterTransparency = QgsRasterTransparency()
myTransparentPixel1 = \
QgsRasterTransparency.TransparentSingleValuePixel()
myTransparentPixel1.min = -2.5840000772112106e+38
myTransparentPixel1.max = -1.0879999684602689e+38
myTransparentPixel1.percentTransparent = 50
myTransparentSingleValuePixelList.append(myTransparentPixel1)
myTransparentPixel2 = \
QgsRasterTransparency.TransparentSingleValuePixel()
myTransparentPixel2.min = 1.359999960575336e+37
myTransparentPixel2.max = 9.520000231087593e+37
myTransparentPixel2.percentTransparent = 70
myTransparentSingleValuePixelList.append(myTransparentPixel2)
rasterTransparency.setTransparentSingleValuePixelList(
myTransparentSingleValuePixelList)
rasterRenderer = myRasterLayer.renderer()
assert rasterRenderer
rasterRenderer.setRasterTransparency(rasterTransparency)
QgsMapLayerRegistry.instance().addMapLayers([myRasterLayer, ])
myMapRenderer = QgsMapRenderer()
myLayers = []
myLayers.append(myRasterLayer.id())
myMapRenderer.setLayerSet(myLayers)
myMapRenderer.setExtent(myRasterLayer.extent())
myChecker = QgsRenderChecker()
myChecker.setControlName("expected_raster_transparency")
myChecker.setMapRenderer(myMapRenderer)
myResultFlag = myChecker.runTest("raster_transparency_python")
assert myResultFlag, "Raster transparency rendering test failed"