Examples of org.geotools.styling.RasterSymbolizer

org.geotools.styling.RasterSymbolizer

l.opengeospatial.org/files/?artifact_id=1188"> OGC Styled-Layer Descriptor Report (OGC 02-070) version 1.0.0.:

 <xs:element name="RasterSymbolizer"> <xs:complexType> <xs:sequence> <xs:element ref="sld:Geometry" minOccurs="0"/> <xs:element ref="sld:Opacity" minOccurs="0"/> <xs:element ref="sld:ChannelSelection" minOccurs="0"/> <xs:element ref="sld:OverlapBehavior" minOccurs="0"/> <xs:element ref="sld:ColorMap" minOccurs="0"/> <xs:element ref="sld:ContrastEnhancement" minOccurs="0"/> <xs:element ref="sld:ShadedRelief" minOccurs="0"/> <xs:element ref="sld:ImageOutline" minOccurs="0"/> </xs:sequence> </xs:complexType> </xs:element>

The following example applies a coloring to elevation (DEM) data (quantities are in meters):

 <RasterSymbolizer> <Opacity>1.0</Opacity> <ColorMap> <ColorMapEntry color="#00ff00" quantity="-500"/> <ColorMapEntry color="#00fa00" quantity="-417"/> <ColorMapEntry color="#14f500" quantity="-333"/> <ColorMapEntry color="#28f502" quantity="-250"/> <ColorMapEntry color="#3cf505" quantity="-167"/> <ColorMapEntry color="#50f50a" quantity="-83"/> <ColorMapEntry color="#64f014" quantity="-1"/> <ColorMapEntry color="#7deb32" quantity="0"/> <ColorMapEntry color="#78c818" quantity="30"/> <ColorMapEntry color="#38840c" quantity="105"/> <ColorMapEntry color="#2c4b04" quantity="300"/> <ColorMapEntry color="#ffff00" quantity="400"/> <ColorMapEntry color="#dcdc00" quantity="700"/> <ColorMapEntry color="#b47800" quantity="1200"/> <ColorMapEntry color="#c85000" quantity="1400"/> <ColorMapEntry color="#be4100" quantity="1600"/> <ColorMapEntry color="#963000" quantity="2000"/> <ColorMapEntry color="#3c0200" quantity="3000"/> <ColorMapEntry color="#ffffff" quantity="5000"/> <ColorMapEntry color="#ffffff" quantity="13000"/> </ColorMap> <OverlapBehavior> <AVERAGE/> </OverlapBehavior> <ShadedRelief/> </RasterSymbolizer>

Here is a rather artificial mutli-band raster symbol:

 <RasterSymbolizer> <Opacity>1.0</Opacity> <ColorMap> <ColorMapEntry color="#000000" quantity="0"/> <ColorMapEntry color="#ffffff" quantity="255"/> </ColorMap> <ChannelSelection> <RedChannel> <SourceChannelName>1</SourceChannelName> <ContrastEnhancement> <Histogram/> </ContrastEnhancement> </RedChannel> <GreenChannel> <SourceChannelName>2</SourceChannelName> <ContrastEnhancement> <GammaValue>2.5</GammaValue> </ContrastEnhancement> </GreenChannel> <BlueChannel> <SourceChannelName>3</SourceChannelName> <ContrastEnhancement> <Normalize/> </ContrastEnhancement> </BlueChannel> </ChannelSelection> <OverlapBehavior> <LATEST_ON_TOP/> </OverlapBehavior> <ContrastEnhancement> <GammaValue>1.0</GammaValue> </ContrastEnhancement> </RasterSymbolizer>

$Id$

@author Ian Turton, CCG @source $URL$

        .create(
            "name",
            JAI.create("ImageRead", TestData.file(this,"smalldem.tif")),
            envelope,new GridSampleDimension[]{new GridSampleDimension("dem")},null,null);
    SubchainStyleVisitorCoverageProcessingAdapter rsh = new RasterSymbolizerHelper(gc, null);
    final RasterSymbolizer rs = extractRasterSymbolizer(sld);
    rsh.visit(rs);
    testRasterSymbolizerHelper(rsh);
    
    
    ////
    //
    // Test using stylebuilder
    //
    ////
    gc = CoverageFactoryFinder.getGridCoverageFactory(null)
    .create(
        "name",
        JAI.create("ImageRead", TestData.file(this,"smalldem.tif")),
        new GeneralEnvelope(new double[] { -90, -180 },
            new double[] { 90, 180 }));
    StyleBuilder sldBuilder = new StyleBuilder();
    // the RasterSymbolizer Helper
    rsh = new RasterSymbolizerHelper(gc, null);


    final RasterSymbolizer rsb_1 = sldBuilder.createRasterSymbolizer();
    final ChannelSelection chSel = new ChannelSelectionImpl();
    final SelectedChannelType chTypeGray = new SelectedChannelTypeImpl();
    chTypeGray.setChannelName("1");
    chSel.setGrayChannel(chTypeGray);
    rsb_1.setChannelSelection(chSel);
    rsb_1.setOpacity(sldBuilder.literalExpression(1.0));
    final ColorMap cm = sldBuilder.createColorMap(
        new String[] { // labels
          "category",
          "category",
          "category"
        },
        new double[] { // quantities
          0.1,
          50.0,
          200.0
        },
        new Color[] { // colors with alpha
          new Color(255,0,0,255),
          new Color(0,255,0,40),
          new Color(0,0,255,125)
        },
        ColorMap.TYPE_RAMP);
    
    rsb_1.setColorMap(cm);
    
    // visit the RasterSymbolizer
    rsh.visit(rsb_1);
    
    testRasterSymbolizerHelper(rsh);

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        .create(
            "name",
            JAI.create("ImageRead", TestData.file(this,"landsat.tiff")),
            envelope,gsd,null,null);
    final SubchainStyleVisitorCoverageProcessingAdapter rsh = new RasterSymbolizerHelper(gc, null);
    final RasterSymbolizer rs = extractRasterSymbolizer(sld);
    rsh.visit(rs);
    
    final RenderedImage ri = ((GridCoverage2D)rsh.getOutput()).getRenderedImage();
    Assert.assertTrue(ri.getColorModel() instanceof ComponentColorModel);
    Assert.assertTrue(ri.getColorModel().getNumComponents()==3);

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        .create(
            "name",
            JAI.create("ImageRead", TestData.file(this,"smalldem.tif")),
            envelope,new GridSampleDimension[]{new GridSampleDimension("dem")},null,null);
    SubchainStyleVisitorCoverageProcessingAdapter rsh = new RasterSymbolizerHelper(gc, null);
    final RasterSymbolizer rs = extractRasterSymbolizer(sld);
    rsh.visit(rs);
    
    //test
    final RenderedImage ri = ((GridCoverage2D)rsh.getOutput()).getRenderedImage();
    Assert.assertTrue(ri.getColorModel() instanceof IndexColorModel);

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        .create(
            "name",
            JAI.create("ImageRead", TestData.file(this,"test_ushort.tif")),
            envelope,new GridSampleDimension[]{new GridSampleDimension("test_dimension")},null,null);
    SubchainStyleVisitorCoverageProcessingAdapter rsh = new RasterSymbolizerHelper(gc, null);
    final RasterSymbolizer rs = extractRasterSymbolizer(sld);
    rsh.visit(rs);
    // Check if the final image has been rescaled to bytes
    RenderedImage outputImage = ((GridCoverage2D)rsh.getOutput()).getRenderedImage();
    int dataType = outputImage.getSampleModel().getDataType();
    assertEquals(DataBuffer.TYPE_BYTE, dataType);

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            PolygonSymbolizer ps = (PolygonSymbolizer) sym;
            ps.accept(this);
        }


        if (sym instanceof RasterSymbolizer) {
            RasterSymbolizer rs = (RasterSymbolizer) sym;
            rs.accept(this);
        }
    }

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     */
    private Style createGreyscaleStyle(int band) {
        ContrastEnhancement ce = sf.contrastEnhancement(ff.literal(1.0), ContrastMethod.NORMALIZE);
        SelectedChannelType sct = sf.createSelectedChannelType(String.valueOf(band), ce);


        RasterSymbolizer sym = sf.getDefaultRasterSymbolizer();
        ChannelSelection sel = sf.channelSelection(sct);
        sym.setChannelSelection(sel);


        return SLD.wrapSymbolizers(sym);
    }

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        SelectedChannelType[] sct = new SelectedChannelType[cov.getNumSampleDimensions()];
        ContrastEnhancement ce = sf.contrastEnhancement(ff.literal(1.0), ContrastMethod.NORMALIZE);
        for (int i = 0; i < 3; i++) {
            sct[i] = sf.createSelectedChannelType(String.valueOf(channelNum[i]), ce);
        }
        RasterSymbolizer sym = sf.getDefaultRasterSymbolizer();
        ChannelSelection sel = sf.channelSelection(sct[RED], sct[GREEN], sct[BLUE]);
        sym.setChannelSelection(sel);


        return SLD.wrapSymbolizers(sym);
    }

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    public RasterSymbolizer build() {
        if (unset) {
            return null;
        }
        RasterSymbolizer symbolizer = sf.rasterSymbolizer(name, geometry, description.build(), uom,
                opacity, channelSelection.build(), overlapsBehaviour, colorMap.build(),
                contrast.build(), shadedRelief.build(), outline != null ? outline.build() : null);
        return symbolizer;
    }

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    public GridCoverage2D execute(
            @DescribeParameter(name = "coverage", description = "Input raster") GridCoverage2D coverage,
            @DescribeParameter(name = "style", description = "Styled Layer Descriptor (SLD) style containing a raster symbolizer") Style style)
            throws IOException {
        // TODO: perform a lookup in the entire style?
        final RasterSymbolizer symbolizer = (RasterSymbolizer) style.featureTypeStyles().get(0)
                .rules().get(0).symbolizers().get(0);


        SubchainStyleVisitorCoverageProcessingAdapter rsh = new RasterSymbolizerHelper(coverage,
                null);
        rsh.visit(symbolizer);

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    public void testInvertedColors() throws Exception {
        MapContent content = new MapContent();
        content.getViewport().setBounds(
                new ReferencedEnvelope(-179.9997834892, 180.00025801626, -89.999828389438,
                        270.00021311603, DefaultGeographicCRS.WGS84));
        RasterSymbolizer rs = buildRainColorMap();
        final Style style = new StyleBuilder().createStyle(rs);
        content.addLayer(new GridReaderLayer(rainReader, style));


        final StreamingRenderer renderer = new StreamingRenderer();
        renderer.setMapContent(content);

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Related Classes of org.geotools.styling.RasterSymbolizer

com.gi.engine.carto.DefaultStyleManager

org.geoserver.sldservice.rest.resource.RasterizerResource

org.geoserver.w3ds.styles.SLD3DParser

org.geoserver.wms.map.RenderedImageMapOutputFormat

org.geoserver.wps.gs.StyleCoverage

org.geotools.process.raster.DynamicColorMapProcess

org.geotools.process.raster.StyleCoverage

org.geotools.renderer.lite.gridcoverage2d.DisplayCoverageTest

org.geotools.renderer.lite.gridcoverage2d.RasterSymbolizerTest

org.geotools.renderer.lite.GridCoverageRendererTest

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