@Override
public void decode(ProfileReadContext ctx, Product p) throws IOException {
final Band[] bands = p.getBands();
for (Band band : bands) {
String variableName = ReaderUtils.getVariableName(band);
final Variable variable = ctx.getNetcdfFile().getRootGroup().findVariable(variableName);
final IndexCoding indexCoding = readIndexCoding(variable, band.getName() + "_index_coding");
if (indexCoding != null) {
p.getIndexCodingGroup().add(indexCoding);
band.setSampleCoding(indexCoding);
}
}
}
private static ImageInfo createIndexedImageInfo(
Product product, TIFFRenderedImage baseImage, Band band) {
final IndexColorModel colorModel = (IndexColorModel) baseImage.getColorModel();
final IndexCoding indexCoding = new IndexCoding("color_map");
final int colorCount = colorModel.getMapSize();
final ColorPaletteDef.Point[] points = new ColorPaletteDef.Point[colorCount];
for (int j = 0; j < colorCount; j++) {
final String name = String.format("I%3d", j);
indexCoding.addIndex(name, j, "");
points[j] = new ColorPaletteDef.Point(j, new Color(colorModel.getRGB(j)), name);
}
product.getIndexCodingGroup().add(indexCoding);
band.setSampleCoding(indexCoding);
return new ImageInfo(new ColorPaletteDef(points, points.length));
}