Python core.QgsPalettedRasterRenderer类代码示例

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本文整理汇总了Python中qgis.core.QgsPalettedRasterRenderer类的典型用法代码示例。如果您正苦于以下问题：Python QgsPalettedRasterRenderer类的具体用法？Python QgsPalettedRasterRenderer怎么用？Python QgsPalettedRasterRenderer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QgsPalettedRasterRenderer类的8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: testLoadPalettedClassDataFromFile

    def testLoadPalettedClassDataFromFile(self):
        # bad file
        classes = QgsPalettedRasterRenderer.classDataFromFile('ajdhjashjkdh kjahjkdhk')
        self.assertEqual(len(classes), 0)

        # good file!
        path = os.path.join(unitTestDataPath('raster'),
                            'test.clr')
        classes = QgsPalettedRasterRenderer.classDataFromFile(path)
        self.assertEqual(len(classes), 10)
        self.assertEqual(classes[0].value, 1)
        self.assertEqual(classes[0].color.name(), '#000000')
        self.assertEqual(classes[0].color.alpha(), 255)
        self.assertEqual(classes[1].value, 2)
        self.assertEqual(classes[1].color.name(), '#c8c8c8')
        self.assertEqual(classes[2].value, 3)
        self.assertEqual(classes[2].color.name(), '#006e00')
        self.assertEqual(classes[3].value, 4)
        self.assertEqual(classes[3].color.name(), '#6e4100')
        self.assertEqual(classes[4].value, 5)
        self.assertEqual(classes[4].color.name(), '#0000ff')
        self.assertEqual(classes[4].color.alpha(), 255)
        self.assertEqual(classes[5].value, 6)
        self.assertEqual(classes[5].color.name(), '#0059ff')
        self.assertEqual(classes[6].value, 7)
        self.assertEqual(classes[6].color.name(), '#00aeff')
        self.assertEqual(classes[7].value, 8)
        self.assertEqual(classes[7].color.name(), '#00fff6')
        self.assertEqual(classes[8].value, 9)
        self.assertEqual(classes[8].color.name(), '#eeff00')
        self.assertEqual(classes[9].value, 10)
        self.assertEqual(classes[9].color.name(), '#ffb600')

开发者ID:m-kuhn，项目名称:QGIS，代码行数:32，代码来源:test_qgsrasterlayer.py

示例2: testPalettedColorTableToClassData

    def testPalettedColorTableToClassData(self):
        entries = [QgsColorRampShader.ColorRampItem(5, QColor(255, 0, 0), 'item1'),
                   QgsColorRampShader.ColorRampItem(3, QColor(0, 255, 0), 'item2'),
                   QgsColorRampShader.ColorRampItem(6, QColor(0, 0, 255), 'item3'),
                   ]
        classes = QgsPalettedRasterRenderer.colorTableToClassData(entries)
        self.assertEqual(classes[0].value, 5)
        self.assertEqual(classes[1].value, 3)
        self.assertEqual(classes[2].value, 6)
        self.assertEqual(classes[0].label, 'item1')
        self.assertEqual(classes[1].label, 'item2')
        self.assertEqual(classes[2].label, 'item3')
        self.assertEqual(classes[0].color.name(), '#ff0000')
        self.assertEqual(classes[1].color.name(), '#00ff00')
        self.assertEqual(classes[2].color.name(), '#0000ff')

        # test #13263
        path = os.path.join(unitTestDataPath('raster'),
                            'hub13263.vrt')
        info = QFileInfo(path)
        base_name = info.baseName()
        layer = QgsRasterLayer(path, base_name)
        self.assertTrue(layer.isValid(), 'Raster not loaded: {}'.format(path))
        classes = QgsPalettedRasterRenderer.colorTableToClassData(layer.dataProvider().colorTable(1))
        self.assertEqual(len(classes), 4)
        classes = QgsPalettedRasterRenderer.colorTableToClassData(layer.dataProvider().colorTable(15))
        self.assertEqual(len(classes), 256)

开发者ID:m-kuhn，项目名称:QGIS，代码行数:27，代码来源:test_qgsrasterlayer.py

示例3: testPalettedClassDataToString

 def testPalettedClassDataToString(self):
     classes = [QgsPalettedRasterRenderer.Class(1, QColor(0, 255, 0), 'class 2'),
                QgsPalettedRasterRenderer.Class(3, QColor(255, 0, 0), 'class 1')]
     self.assertEqual(QgsPalettedRasterRenderer.classDataToString(classes), '1 0 255 0 255 class 2\n3 255 0 0 255 class 1')
     # must be sorted by value to work OK in ArcMap
     classes = [QgsPalettedRasterRenderer.Class(4, QColor(0, 255, 0), 'class 2'),
                QgsPalettedRasterRenderer.Class(3, QColor(255, 0, 0), 'class 1')]
     self.assertEqual(QgsPalettedRasterRenderer.classDataToString(classes),
                      '3 255 0 0 255 class 1\n4 0 255 0 255 class 2')

开发者ID:m-kuhn，项目名称:QGIS，代码行数:9，代码来源:test_qgsrasterlayer.py

示例4: testPalettedRendererWithNegativeColorValue

    def testPalettedRendererWithNegativeColorValue(self):
        """ test paletted raster renderer with negative values in color table"""

        path = os.path.join(unitTestDataPath('raster'),
                            'hub13263.vrt')
        info = QFileInfo(path)
        base_name = info.baseName()
        layer = QgsRasterLayer(path, base_name)
        self.assertTrue(layer.isValid(), 'Raster not loaded: {}'.format(path))

        renderer = QgsPalettedRasterRenderer(layer.dataProvider(), 1,
                                             [QgsPalettedRasterRenderer.Class(-1, QColor(0, 255, 0), 'class 2'),
                                              QgsPalettedRasterRenderer.Class(3, QColor(255, 0, 0), 'class 1')])

        self.assertEqual(renderer.nColors(), 2)
        self.assertEqual(renderer.usesBands(), [1])

开发者ID:m-kuhn，项目名称:QGIS，代码行数:16，代码来源:test_qgsrasterlayer.py

示例5: testPalettedRasterRenderer

    def testPalettedRasterRenderer(self):
        # create 10 color classes
        #classesString = '122 0 0 0 255 122\n123 1 1 1 255 123\n124 2 2 2 255 124\n125 3 3 3 255 125\n126 4 4 4 255 126\n127 5 5 5 255 127\n128 6 6 6 255 128\n129 7 7 7 255 129\n130 8 8 8 255 130'
        classesString = ''
        for index in range(10):
            classesString += '{0} {0} {0} {0} 255 {0}\n'.format(index)
        classes = QgsPalettedRasterRenderer.classDataFromString(classesString)

        rasterRenderer = QgsPalettedRasterRenderer(
            self.raster_layer.dataProvider(), 3, classes)
        self.raster_layer.setRenderer(rasterRenderer)

        dom, root = self.rendererToSld(self.raster_layer.renderer())
        self.assertNoOpacity(root)
        self.assertChannelBand(root, 'sld:GrayChannel', '3')
        # check ColorMapEntry classes
        colorMap = root.elementsByTagName('sld:ColorMap')
        colorMap = colorMap.item(0).toElement()
        self.assertFalse(colorMap.isNull())
        self.assertEqual(colorMap.attribute('type'), 'values')
        self.assertFalse(colorMap.hasAttribute('extendend'))
        colorMapEntries = colorMap.elementsByTagName('sld:ColorMapEntry')
        self.assertEqual(colorMapEntries.count(), 10)
        for index in range(colorMapEntries.count()):
            colorMapEntry = colorMapEntries.at(index).toElement()
            self.assertEqual(colorMapEntry.attribute('quantity'), '{}'.format(index))
            self.assertEqual(colorMapEntry.attribute('label'), '{}'.format(index))
            self.assertEqual(colorMapEntry.attribute('opacity'), '')
            self.assertEqual(colorMapEntry.attribute('color'), '#{0:02d}{0:02d}{0:02d}'.format(index))

        # add check that is set ColoMap extended="true" if colormap is bigger that 255 entries
        classesString = ''
        values = range(255)
        for index in range(255):
            classesString += '{0} {1} {1} {1} 255 {0}\n'.format(index, random.choice(values))
        classes = QgsPalettedRasterRenderer.classDataFromString(classesString)
        rasterRenderer = QgsPalettedRasterRenderer(
            self.raster_layer.dataProvider(), 3, classes)
        self.raster_layer.setRenderer(rasterRenderer)
        dom, root = self.rendererToSld(self.raster_layer.renderer())
        colorMap = root.elementsByTagName('sld:ColorMap')
        colorMap = colorMap.item(0).toElement()
        self.assertTrue(colorMap.hasAttribute('extended'))
        self.assertEqual(colorMap.attribute('extended'), 'true')

开发者ID:yoichigmf，项目名称:QGIS，代码行数:44，代码来源:test_qgsrasterrerderer_createsld.py

示例6: testPalettedClassDataFromLayer

    def testPalettedClassDataFromLayer(self):
        # no layer
        classes = QgsPalettedRasterRenderer.classDataFromRaster(None, 1)
        self.assertFalse(classes)

        # 10 class layer
        path = os.path.join(unitTestDataPath('raster'),
                            'with_color_table.tif')
        info = QFileInfo(path)
        base_name = info.baseName()
        layer10 = QgsRasterLayer(path, base_name)
        classes = QgsPalettedRasterRenderer.classDataFromRaster(layer10.dataProvider(), 1)
        self.assertEqual(len(classes), 10)
        self.assertEqual(classes[0].value, 1)
        self.assertEqual(classes[0].label, '1')
        self.assertEqual(classes[1].value, 2)
        self.assertEqual(classes[1].label, '2')
        self.assertEqual(classes[2].value, 3)
        self.assertEqual(classes[2].label, '3')
        self.assertEqual(classes[3].value, 4)
        self.assertEqual(classes[3].label, '4')
        self.assertEqual(classes[4].value, 5)
        self.assertEqual(classes[4].label, '5')
        self.assertEqual(classes[5].value, 6)
        self.assertEqual(classes[5].label, '6')
        self.assertEqual(classes[6].value, 7)
        self.assertEqual(classes[6].label, '7')
        self.assertEqual(classes[7].value, 8)
        self.assertEqual(classes[7].label, '8')
        self.assertEqual(classes[8].value, 9)
        self.assertEqual(classes[8].label, '9')
        self.assertEqual(classes[9].value, 10)
        self.assertEqual(classes[9].label, '10')

        # bad band
        self.assertFalse(QgsPalettedRasterRenderer.classDataFromRaster(layer10.dataProvider(), 10101010))

        # with ramp
        r = QgsGradientColorRamp(QColor(200, 0, 0, 100), QColor(0, 200, 0, 200))
        classes = QgsPalettedRasterRenderer.classDataFromRaster(layer10.dataProvider(), 1, r)
        self.assertEqual(len(classes), 10)
        self.assertEqual(classes[0].color.name(), '#c80000')
        self.assertEqual(classes[1].color.name(), '#b21600')
        self.assertEqual(classes[2].color.name(), '#9c2c00')
        self.assertEqual(classes[3].color.name(), '#854200')
        self.assertEqual(classes[4].color.name(), '#6f5900')
        self.assertEqual(classes[5].color.name(), '#596f00')
        self.assertEqual(classes[6].color.name(), '#428500')
        self.assertEqual(classes[7].color.name(), '#2c9c00')
        self.assertEqual(classes[8].color.name(), '#16b200')
        self.assertEqual(classes[9].color.name(), '#00c800')

        # 30 class layer
        path = os.path.join(unitTestDataPath('raster'),
                            'unique_1.tif')
        info = QFileInfo(path)
        base_name = info.baseName()
        layer10 = QgsRasterLayer(path, base_name)
        classes = QgsPalettedRasterRenderer.classDataFromRaster(layer10.dataProvider(), 1)
        self.assertEqual(len(classes), 30)
        expected = [11, 21, 22, 24, 31, 82, 2002, 2004, 2014, 2019, 2027, 2029, 2030, 2080, 2081, 2082, 2088, 2092, 2097, 2098, 2099, 2105, 2108, 2110, 2114, 2118, 2126, 2152, 2184, 2220]
        self.assertEqual([c.value for c in classes], expected)

        # bad layer
        path = os.path.join(unitTestDataPath('raster'),
                            'hub13263.vrt')
        info = QFileInfo(path)
        base_name = info.baseName()
        layer = QgsRasterLayer(path, base_name)
        classes = QgsPalettedRasterRenderer.classDataFromRaster(layer.dataProvider(), 1)
        self.assertFalse(classes)

开发者ID:m-kuhn，项目名称:QGIS，代码行数:71，代码来源:test_qgsrasterlayer.py

示例7: testLoadPalettedColorDataFromString

    def testLoadPalettedColorDataFromString(self):
        """
        Test interpreting a bunch of color data format strings
        """
        esri_clr_format = '1 255 255 0\n2 64 0 128\n3 255 32 32\n4 0 255 0\n5 0 0 255'
        esri_clr_format_win = '1 255 255 0\r\n2 64 0 128\r\n3 255 32 32\r\n4 0 255 0\r\n5 0 0 255'
        esri_clr_format_tab = '1\t255\t255\t0\n2\t64\t0\t128\n3\t255\t32\t32\n4\t0\t255\t0\n5\t0\t0\t255'
        esri_clr_spaces = '1    255    255    0\n2    64    0    128\n3    255   32    32\n4   0   255   0\n5   0   0   255'
        gdal_clr_comma = '1,255,255,0\n2,64,0,128\n3,255,32,32\n4,0,255,0\n5,0,0,255'
        gdal_clr_colon = '1:255:255:0\n2:64:0:128\n3:255:32:32\n4:0:255:0\n5:0:0:255'
        for f in [esri_clr_format,
                  esri_clr_format_win,
                  esri_clr_format_tab,
                  esri_clr_spaces,
                  gdal_clr_comma,
                  gdal_clr_colon]:
            classes = QgsPalettedRasterRenderer.classDataFromString(f)
            self.assertEqual(len(classes), 5)
            self.assertEqual(classes[0].value, 1)
            self.assertEqual(classes[0].color.name(), '#ffff00')
            self.assertEqual(classes[1].value, 2)
            self.assertEqual(classes[1].color.name(), '#400080')
            self.assertEqual(classes[2].value, 3)
            self.assertEqual(classes[2].color.name(), '#ff2020')
            self.assertEqual(classes[3].value, 4)
            self.assertEqual(classes[3].color.name(), '#00ff00')
            self.assertEqual(classes[4].value, 5)
            self.assertEqual(classes[4].color.name(), '#0000ff')

        grass_named_colors = '0 white\n1 yellow\n3 black\n6 blue\n9 magenta\n11 aqua\n13 grey\n14 gray\n15 orange\n19 brown\n21 purple\n22 violet\n24 indigo\n90 green\n180 cyan\n270 red\n'
        classes = QgsPalettedRasterRenderer.classDataFromString(grass_named_colors)
        self.assertEqual(len(classes), 16)
        self.assertEqual(classes[0].value, 0)
        self.assertEqual(classes[0].color.name(), '#ffffff')
        self.assertEqual(classes[1].value, 1)
        self.assertEqual(classes[1].color.name(), '#ffff00')
        self.assertEqual(classes[2].value, 3)
        self.assertEqual(classes[2].color.name(), '#000000')
        self.assertEqual(classes[3].value, 6)
        self.assertEqual(classes[3].color.name(), '#0000ff')
        self.assertEqual(classes[4].value, 9)
        self.assertEqual(classes[4].color.name(), '#ff00ff')
        self.assertEqual(classes[5].value, 11)
        self.assertEqual(classes[5].color.name(), '#00ffff')
        self.assertEqual(classes[6].value, 13)
        self.assertEqual(classes[6].color.name(), '#808080')
        self.assertEqual(classes[7].value, 14)
        self.assertEqual(classes[7].color.name(), '#808080')
        self.assertEqual(classes[8].value, 15)
        self.assertEqual(classes[8].color.name(), '#ffa500')
        self.assertEqual(classes[9].value, 19)
        self.assertEqual(classes[9].color.name(), '#a52a2a')
        self.assertEqual(classes[10].value, 21)
        self.assertEqual(classes[10].color.name(), '#800080')
        self.assertEqual(classes[11].value, 22)
        self.assertEqual(classes[11].color.name(), '#ee82ee')
        self.assertEqual(classes[12].value, 24)
        self.assertEqual(classes[12].color.name(), '#4b0082')
        self.assertEqual(classes[13].value, 90)
        self.assertEqual(classes[13].color.name(), '#008000')
        self.assertEqual(classes[14].value, 180)
        self.assertEqual(classes[14].color.name(), '#00ffff')
        self.assertEqual(classes[15].value, 270)
        self.assertEqual(classes[15].color.name(), '#ff0000')

        gdal_alpha = '1:255:255:0:0\n2:64:0:128:50\n3:255:32:32:122\n4:0:255:0:200\n5:0:0:255:255'
        classes = QgsPalettedRasterRenderer.classDataFromString(gdal_alpha)
        self.assertEqual(len(classes), 5)
        self.assertEqual(classes[0].value, 1)
        self.assertEqual(classes[0].color.name(), '#ffff00')
        self.assertEqual(classes[0].color.alpha(), 0)
        self.assertEqual(classes[1].value, 2)
        self.assertEqual(classes[1].color.name(), '#400080')
        self.assertEqual(classes[1].color.alpha(), 50)
        self.assertEqual(classes[2].value, 3)
        self.assertEqual(classes[2].color.name(), '#ff2020')
        self.assertEqual(classes[2].color.alpha(), 122)
        self.assertEqual(classes[3].value, 4)
        self.assertEqual(classes[3].color.name(), '#00ff00')
        self.assertEqual(classes[3].color.alpha(), 200)
        self.assertEqual(classes[4].value, 5)
        self.assertEqual(classes[4].color.name(), '#0000ff')
        self.assertEqual(classes[4].color.alpha(), 255)

        # qgis style, with labels
        qgis = '3 255 0 0 255 class 1\n4 0 255 0 200 class 2'
        classes = QgsPalettedRasterRenderer.classDataFromString(qgis)
        self.assertEqual(len(classes), 2)
        self.assertEqual(classes[0].value, 3)
        self.assertEqual(classes[0].color.name(), '#ff0000')
        self.assertEqual(classes[0].color.alpha(), 255)
        self.assertEqual(classes[0].label, 'class 1')
        self.assertEqual(classes[1].value, 4)
        self.assertEqual(classes[1].color.name(), '#00ff00')
        self.assertEqual(classes[1].color.alpha(), 200)
        self.assertEqual(classes[1].label, 'class 2')

        # some bad inputs
        bad = ''
        classes = QgsPalettedRasterRenderer.classDataFromString(bad)
#.........这里部分代码省略.........

开发者ID:m-kuhn，项目名称:QGIS，代码行数:101，代码来源:test_qgsrasterlayer.py

示例8: testPaletted

    def testPaletted(self):
        """ test paletted raster renderer with raster with color table"""
        path = os.path.join(unitTestDataPath('raster'),
                            'with_color_table.tif')
        info = QFileInfo(path)
        base_name = info.baseName()
        layer = QgsRasterLayer(path, base_name)
        self.assertTrue(layer.isValid(), 'Raster not loaded: {}'.format(path))

        renderer = QgsPalettedRasterRenderer(layer.dataProvider(), 1,
                                             [QgsPalettedRasterRenderer.Class(1, QColor(0, 255, 0), 'class 2'),
                                              QgsPalettedRasterRenderer.Class(3, QColor(255, 0, 0), 'class 1')])

        self.assertEqual(renderer.nColors(), 2)
        self.assertEqual(renderer.usesBands(), [1])

        # test labels
        self.assertEqual(renderer.label(1), 'class 2')
        self.assertEqual(renderer.label(3), 'class 1')
        self.assertFalse(renderer.label(101))

        # test legend symbology - should be sorted by value
        legend = renderer.legendSymbologyItems()
        self.assertEqual(legend[0][0], 'class 2')
        self.assertEqual(legend[1][0], 'class 1')
        self.assertEqual(legend[0][1].name(), '#00ff00')
        self.assertEqual(legend[1][1].name(), '#ff0000')

        # test retrieving classes
        classes = renderer.classes()
        self.assertEqual(classes[0].value, 1)
        self.assertEqual(classes[1].value, 3)
        self.assertEqual(classes[0].label, 'class 2')
        self.assertEqual(classes[1].label, 'class 1')
        self.assertEqual(classes[0].color.name(), '#00ff00')
        self.assertEqual(classes[1].color.name(), '#ff0000')

        # test set label
        # bad index
        renderer.setLabel(1212, 'bad')
        renderer.setLabel(3, 'new class')
        self.assertEqual(renderer.label(3), 'new class')

        # color ramp
        r = QgsLimitedRandomColorRamp(5)
        renderer.setSourceColorRamp(r)
        self.assertEqual(renderer.sourceColorRamp().type(), 'random')
        self.assertEqual(renderer.sourceColorRamp().count(), 5)

        # clone
        new_renderer = renderer.clone()
        classes = new_renderer.classes()
        self.assertEqual(classes[0].value, 1)
        self.assertEqual(classes[1].value, 3)
        self.assertEqual(classes[0].label, 'class 2')
        self.assertEqual(classes[1].label, 'new class')
        self.assertEqual(classes[0].color.name(), '#00ff00')
        self.assertEqual(classes[1].color.name(), '#ff0000')
        self.assertEqual(new_renderer.sourceColorRamp().type(), 'random')
        self.assertEqual(new_renderer.sourceColorRamp().count(), 5)

        # write to xml and read
        doc = QDomDocument('testdoc')
        elem = doc.createElement('qgis')
        renderer.writeXml(doc, elem)
        restored = QgsPalettedRasterRenderer.create(elem.firstChild().toElement(), layer.dataProvider())
        self.assertTrue(restored)
        self.assertEqual(restored.usesBands(), [1])
        classes = restored.classes()
        self.assertTrue(classes)
        self.assertEqual(classes[0].value, 1)
        self.assertEqual(classes[1].value, 3)
        self.assertEqual(classes[0].label, 'class 2')
        self.assertEqual(classes[1].label, 'new class')
        self.assertEqual(classes[0].color.name(), '#00ff00')
        self.assertEqual(classes[1].color.name(), '#ff0000')
        self.assertEqual(restored.sourceColorRamp().type(), 'random')
        self.assertEqual(restored.sourceColorRamp().count(), 5)

        # render test
        layer.setRenderer(renderer)
        ms = QgsMapSettings()
        ms.setLayers([layer])
        ms.setExtent(layer.extent())

        checker = QgsRenderChecker()
        checker.setControlName("expected_paletted_renderer")
        checker.setMapSettings(ms)

        self.assertTrue(checker.runTest("expected_paletted_renderer"), "Paletted rendering test failed")

开发者ID:m-kuhn，项目名称:QGIS，代码行数:90，代码来源:test_qgsrasterlayer.py

注：本文中的qgis.core.QgsPalettedRasterRenderer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.QgsPalettedRasterRenderer类代码示例

示例1: testLoadPalettedClassDataFromFile

示例2: testPalettedColorTableToClassData

示例3: testPalettedClassDataToString

示例4: testPalettedRendererWithNegativeColorValue

示例5: testPalettedRasterRenderer

示例6: testPalettedClassDataFromLayer

示例7: testLoadPalettedColorDataFromString

示例8: testPaletted

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