Examples of org.geotools.styling.ColorMap

org.geotools.styling.ColorMap
The ColorMap element defines either the colors of a palette-type raster source or the mapping of fixed-numeric pixel values to colors.
```
 <xs:element name="ColorMap"> <xs:complexType> <xs:choice minOccurs="0" maxOccurs="unbounded"> <xs:element ref="sld:ColorMapEntry"/> </xs:choice> </xs:complexType> </xs:element> 
```
For example, a DEM raster giving elevations in meters above sea level can be translated to a colored image with a ColorMap. The quantity attributes of a color-map are used for translating between numeric matrixes and color rasters and the ColorMap entries should be in order of increasing numeric quantity so that intermediate numeric values can be matched to a color (or be interpolated between two colors). Labels may be used for legends or may be used in the future to match character values. Not all systems can support opacity in colormaps. The default opacity is 1.0 (fully opaque). Defaults for quantity and label are system-dependent. @source $URL$

     * 
     * @generated modifiable
     */
    public Object parse(ElementInstance instance, Node node, Object value) throws Exception {


        ColorMap map = styleFactory.createColorMap();
        
        List<Node> children = node.getChildren();
        int i = 0;
        while(!"Value".equals(children.get(i).getComponent().getName())) i++;
        
        ColorMapEntry entry = styleFactory.createColorMapEntry();
        entry.setColor((Expression)children.get(i++).getValue());
        map.addColorMapEntry(entry);
        
        while(i < children.size()) {
            entry = styleFactory.createColorMapEntry();
            entry.setQuantity((Expression)children.get(i).getValue());
            if (i+1 >= children.size()) {
                throw new IllegalArgumentException("Incorrectly specified color map Threshold/Value pair");
            }
            
            entry.setColor((Expression)children.get(i+1).getValue());
            map.addColorMapEntry(entry);


            i+=2;
        }
        
        return map;

View Full Code Here

     *
     * @generated modifiable
     */
    public Object parse(ElementInstance instance, Node node, Object value)
        throws Exception {
        ColorMap colorMap = styleFactory.createColorMap();
        List entries = (List) node.getChildValues("ColorMapEntry");


        for (Iterator itr = entries.iterator(); itr.hasNext();) {
            colorMap.addColorMapEntry((ColorMapEntry) itr.next());
        }


        return colorMap;
    }

View Full Code Here


        // background bkgColor
        bgColor = LegendUtils.getBackgroundColor(request);


        // colormap element
        final ColorMap cmap = rasterSymbolizer.getColorMap();
        final Builder cmapLegendBuilder = new ColorMapLegendCreator.Builder();
        if (cmap != null && cmap.getColorMapEntries() != null
                && cmap.getColorMapEntries().length > 0) {


            // passing additional options
            cmapLegendBuilder.setAdditionalOptions(request.getLegendOptions());


            // setting type of colormap
            cmapLegendBuilder.setColorMapType(cmap.getType());


            // is this colormap using extended colors
            cmapLegendBuilder.setExtended(cmap.getExtendedColors());


            // setting the requested colormap entries
            cmapLegendBuilder.setRequestedDimension(new Dimension(width, height));


            // setting transparency and background bkgColor
            cmapLegendBuilder.setTransparent(transparent);
            cmapLegendBuilder.setBackgroundColor(bgColor);


            // setting band


            // Setting label font and font bkgColor
            cmapLegendBuilder.setLabelFont(LegendUtils.getLabelFont(request));
            cmapLegendBuilder.setLabelFontColor(LegendUtils.getLabelFontColor(request));


            // set band
            final ChannelSelection channelSelection = rasterSymbolizer.getChannelSelection();
            cmapLegendBuilder.setBand(channelSelection != null ? channelSelection.getGrayChannel()
                    : null);


            // adding the colormap entries
            final ColorMapEntry[] colorMapEntries = cmap.getColorMapEntries();
            for (ColorMapEntry ce : colorMapEntries)
                if (ce != null)
                    cmapLegendBuilder.addColorMapEntry(ce);


            // check the additional options before proceeding

View Full Code Here

   * @throws Exception 
   */
  private Style remapStyle(StyleInfo defaultStyle, RasterSymbolizer rasterSymbolizer, double min, double max, int classes, COLORRAMP_TYPE ramp, String layerName) throws Exception {
    StyleBuilder sb = new StyleBuilder();
    
    ColorMap originalColorMap = rasterSymbolizer.getColorMap();
    ColorMap resampledColorMap = null;
    
    int numClasses = originalColorMap.getColorMapEntries().length;
    
//    if (numClasses > 0) {
//      resampledColorMap = originalColorMap;
//      double res = (max - min) / (numClasses - 1);
//      int c = 0;
//      for (ColorMapEntry cmEntry : resampledColorMap.getColorMapEntries()) {
//        cmEntry.setQuantity(sb.literalExpression(min + res * c));
//        c++;
//      }
//    } else 
    if (classes > 0) {
      final String[] labels = new String[classes];
      final double[] quantities = new double[classes];
      
      ColorRamp colorRamp = null;


      double res = (max - min) / (classes - 1);
      for (int c = 0; c < classes; c++) {
        labels[c] = "values";
        quantities[c] = min + res * c;
      }
      
      switch (ramp) {
      case RED:
        colorRamp = new RedColorRamp();
        break;
      case BLUE:
        colorRamp = new BlueColorRamp();
        break;
      case GRAY:
        colorRamp = new GrayColorRamp();
        break;
      case RANDOM:
        colorRamp = new RandomColorRamp();
        break;
      }
      colorRamp.setNumClasses(classes);
      
      resampledColorMap = sb.createColorMap(
          labels, 
          quantities, 
          colorRamp.getRamp().toArray(new Color[1]), 
          ColorMap.TYPE_RAMP
      );
      FilterFactory2 filterFactory = CommonFactoryFinder.getFilterFactory2(null);
      resampledColorMap.getColorMapEntry(0).setOpacity(filterFactory.literal(0));
    } else {
      return defaultStyle.getStyle();
    }
    
//    StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory(null);

View Full Code Here

    public Object execute(GetLegendGraphicRequest request, Map<String, Object> map, String colorMap) {


        GridCoverage2D coverage = null;
        try {


            ColorMap cmap = null;


            // Setting up filter functions
            FilterFunction_svgColorMap colorMapFilterFunction = new FilterFunction_svgColorMap();
            FilterFunction_gridCoverageStats statsFilterFunction = new FilterFunction_gridCoverageStats();


            // Only parsing the first layer.
            String layerID = "";
            int digits = DEFAULT_DIGITS; 
            Set<String> params = map.keySet();
            for (String param: params) {
                if (param.equalsIgnoreCase("LAYER")) {
                    layerID = (String) map.get("LAYER"); 
                } else if (param.equalsIgnoreCase("DIGITS")) {
                    digits = Integer.parseInt((String) map.get("DIGITS"));
                }
            }


            final int indexOf = layerID.indexOf(":");
            
            final CoverageInfo coverageInfo = geoserverCatalog.getCoverageByName(new NameImpl(
                    layerID.substring(0, indexOf), layerID.substring(indexOf + 1)));
            List<CoverageDimensionInfo> dimensions = coverageInfo.getDimensions();
            String unit = "";
            if (dimensions != null && !dimensions.isEmpty()) {
                CoverageDimensionInfo dimensionInfo = dimensions.get(0);
                unit = dimensionInfo.getUnit();
            }


            // Getting coverage to parse statistics
            final CoverageStoreInfo storeInfo = coverageInfo.getStore();
            final GridCoverage2DReader reader = (GridCoverage2DReader) geoserverCatalog
                    .getResourcePool().getGridCoverageReader(storeInfo, null);


            GeneralParameterValue[] parameters = parseReadParameters(coverageInfo, map, reader);
            coverage = (GridCoverage2D) reader.read(parameters);


            final double min = (Double) statsFilterFunction.evaluate(coverage, "minimum");
            final double max = (Double) statsFilterFunction.evaluate(coverage, "maximum");


            // Getting a colorMap on top of that
            cmap = (ColorMap) colorMapFilterFunction.evaluate(colorMap, min, max);
            final Builder cmapLegendBuilder = new ColorMapLegendCreator.Builder();
            if (cmap != null && cmap.getColorMapEntries() != null
                    && cmap.getColorMapEntries().length > 0) {


                // setting type of colormap
                cmapLegendBuilder.setColorMapType(cmap.getType());


                // is this colormap using extended colors
                cmapLegendBuilder.setExtended(cmap.getExtendedColors());


                // setting the requested colormap entries
                cmapLegendBuilder.setRequestedDimension(new Dimension(request.getWidth(), request
                        .getHeight()));


                // // setting transparency and background bkgColor
                // cmapLegendBuilder.setTransparent(transparent);
                // cmapLegendBuilder.setBackgroundColor(bgColor);


                // setting band


                // Setting label font and font bkgColor
                cmapLegendBuilder.setLabelFont(LegendUtils.getLabelFont(request));
                cmapLegendBuilder.setLabelFontColor(LegendUtils.getLabelFontColor(request));
                cmapLegendBuilder.setUnit(unit);
                cmapLegendBuilder.setDigits(digits);
                cmapLegendBuilder.setAlternativeColorMapEntryBuilder(true);
                // set band
                // final ChannelSelection channelSelection = rasterSymbolizer.getChannelSelection();
                // cmapLegendBuilder.setBand(channelSelection != null ? channelSelection.getGrayChannel()
                // : null);


                // adding the colormap entries
                final ColorMapEntry[] colorMapEntries = cmap.getColorMapEntries();
                for (ColorMapEntry ce : colorMapEntries)
                    if (ce != null)
                        cmapLegendBuilder.addColorMapEntry(ce);


                // check the additional options before proceeding

View Full Code Here

   */
  private Style remapStyle(StyleInfo defaultStyle, RasterSymbolizer rasterSymbolizer, double min, double max, 
          int classes, COLORRAMP_TYPE ramp, String layerName, final int digits, final int colorMapType) throws Exception {
    StyleBuilder sb = new StyleBuilder();
    
    ColorMap originalColorMap = rasterSymbolizer.getColorMap();
    ColorMap resampledColorMap = null;
    
    int numClasses = originalColorMap.getColorMapEntries().length;
    
//    if (numClasses > 0) {
//      resampledColorMap = originalColorMap;
//      double res = (max - min) / (numClasses - 1);
//      int c = 0;
//      for (ColorMapEntry cmEntry : resampledColorMap.getColorMapEntries()) {
//        cmEntry.setQuantity(sb.literalExpression(min + res * c));
//        c++;
//      }
//    } else 
    if (classes > 0) {
      final String[] labels = new String[classes+1];
      final double[] quantities = new double[classes+1];
      
      ColorRamp colorRamp = null;
      quantities[0] = min - DEFAULT_MIN_DECREMENT;
      if (colorMapType == ColorMap.TYPE_INTERVALS){
          max = max + DEFAULT_MIN_DECREMENT;
          min = min + DEFAULT_MIN_DECREMENT;
      }
      double res = (max - min) / (classes - 1);
      labels[0] = "transparent";
      final String format ="%." + digits + "f";
      for (int c = 1; c <= classes; c++) {
        quantities[c] = min + res * (c-1);
        labels[c] = String.format(Locale.US, format, quantities[c]);
      }
      
      switch (ramp) {
      case RED:
        colorRamp = new RedColorRamp();
        break;
      case BLUE:
        colorRamp = new BlueColorRamp();
        break;
      case GRAY:
        colorRamp = new GrayColorRamp();
        break;
      case JET:
        colorRamp = new JetColorRamp();
        break;
      case RANDOM:
        colorRamp = new RandomColorRamp();
        break;
      }
      colorRamp.setNumClasses(classes);
      
      resampledColorMap = sb.createColorMap(
          labels, 
          quantities, 
          colorRamp.getRamp().toArray(new Color[1]), 
          colorMapType
      );
      FilterFactory2 filterFactory = CommonFactoryFinder.getFilterFactory2(null);
      resampledColorMap.getColorMapEntry(0).setOpacity(filterFactory.literal(0));
    } else {
      return defaultStyle.getStyle();
    }
    
//    StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory(null);

View Full Code Here

    return symbol;
  }


  /** Internal parse method - made protected for unit testing */
  protected ColorMap parseColorMap(Node root) {
    ColorMap symbol = factory.createColorMap();


    if (root.hasAttributes()) {
      // parsing type attribute
      final NamedNodeMap atts = root.getAttributes();
      Node typeAtt = atts.getNamedItem("type");
      if (typeAtt != null) {
        final String type = typeAtt.getNodeValue();


        if ("ramp".equalsIgnoreCase(type)) {
          symbol.setType(ColorMap.TYPE_RAMP);
        } else if ("intervals".equalsIgnoreCase(type)) {
          symbol.setType(ColorMap.TYPE_INTERVALS);
        } else if ("values".equalsIgnoreCase(type)) {
          symbol.setType(ColorMap.TYPE_VALUES);
        } else if (LOGGER.isLoggable(Level.FINE))
          LOGGER.fine(Errors.format(ErrorKeys.ILLEGAL_ARGUMENT_$2,
              "ColorMapType", type));


      }


      // parsing extended colors
      typeAtt = atts.getNamedItem("extended");
      if (typeAtt != null) {
        final String type = typeAtt.getNodeValue();


        if ("true".equalsIgnoreCase(type)) {
          symbol.setExtendedColors(true);
        } else if ("false".equalsIgnoreCase(type)) {
          symbol.setExtendedColors(false);
        } else if (LOGGER.isLoggable(Level.FINE))
          LOGGER.fine(Errors.format(ErrorKeys.ILLEGAL_ARGUMENT_$2,
              "Extended", type));


      }
    }


    NodeList children = root.getChildNodes();
    final int length = children.getLength();
    for (int i = 0; i < length; i++) {
      Node child = children.item(i);


      if ((child == null) || (child.getNodeType() != Node.ELEMENT_NODE)) {
        continue;
      }
      String childName = child.getLocalName();
      if (childName == null) {
        childName = child.getNodeName();
      }


      if (childName.equalsIgnoreCase("ColorMapEntry")) {
        symbol.addColorMapEntry(parseColorMapEntry(child));
      }
    }


    return symbol;
  }

View Full Code Here

    }


    @Test
    public void testSvgColorMapFilterFunctionRGB() throws Exception {
        final FilterFunction_svgColorMap func = new FilterFunction_svgColorMap();
        final ColorMap colorMap = (ColorMap) func.evaluate("rgb(0,0,255);rgb(0,255,0);rgb(255,0,0)", 10, 100);
        final ColorMapEntry[] entries = colorMap.getColorMapEntries();


        check(entries);
      }

View Full Code Here

      }


    @Test
    public void testSvgColorMapFilterFunctionHEX() throws Exception {
        final FilterFunction_svgColorMap func = new FilterFunction_svgColorMap();
        final ColorMap colorMap = (ColorMap) func.evaluate("#0000FF;#00FF00;#FF0000", 10, 100);
        final ColorMapEntry[] entries = colorMap.getColorMapEntries();


        check(entries);
      }

View Full Code Here


        // background bkgColor
        bgColor = LegendUtils.getBackgroundColor(request);


        // colormap element
        final ColorMap cmap = rasterSymbolizer.getColorMap();
        final Builder cmapLegendBuilder = new ColorMapLegendCreator.Builder();
        if (cmap != null && cmap.getColorMapEntries() != null
                && cmap.getColorMapEntries().length > 0) {


            // passing additional options
            cmapLegendBuilder.setAdditionalOptions(request.getLegendOptions());


            // setting type of colormap
            cmapLegendBuilder.setColorMapType(cmap.getType());


            // is this colormap using extended colors
            cmapLegendBuilder.setExtended(cmap.getExtendedColors());


            // setting the requested colormap entries
            cmapLegendBuilder.setRequestedDimension(new Dimension(width, height));


            // setting transparency and background bkgColor
            cmapLegendBuilder.setTransparent(transparent);
            cmapLegendBuilder.setBackgroundColor(bgColor);


            // setting band


            // Setting label font and font bkgColor
            cmapLegendBuilder.setLabelFont(LegendUtils.getLabelFont(request));
            cmapLegendBuilder.setLabelFontColor(LegendUtils.getLabelFontColor(request));


            // set band
            final ChannelSelection channelSelection = rasterSymbolizer.getChannelSelection();
            cmapLegendBuilder.setBand(channelSelection != null ? channelSelection.getGrayChannel()
                    : null);


            // adding the colormap entries
            final ColorMapEntry[] colorMapEntries = cmap.getColorMapEntries();
            for (ColorMapEntry ce : colorMapEntries)
                if (ce != null)
                    cmapLegendBuilder.addColorMapEntry(ce);


            // check the additional options before proceeding

View Full Code Here

0 1 2 3

TOP

Related Classes of org.geotools.styling.ColorMap

org.geoserver.sldservice.rest.resource.RasterizerResource

org.geoserver.w3ds.styles.SLD3DParser

org.geoserver.wms.dynamic.legendgraphic.DynamicColorMapBuilder

org.geoserver.wms.legendgraphic.RasterLayerLegendHelper

org.geotools.process.raster.DynamicColorMapTest

org.geotools.renderer.lite.gridcoverage2d.GradientColorMapGenerator

org.geotools.renderer.lite.gridcoverage2d.GradientColorMapGeneratorTest

org.geotools.renderer.lite.gridcoverage2d.RasterSymbolizerHelper

org.geotools.renderer.lite.gridcoverage2d.RasterSymbolizerTest

org.geotools.renderer.lite.GridCoverageRendererTest

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.