new GeneralEnvelope(new double[] { -90, -180 },
new double[] { 90, 180 }),new GridSampleDimension[]{new GridSampleDimension("test1BandByte_SLD")},null,null);
surl = TestData.url(this, "logarithmic.sld");
stylereader = new SLDParser(sf, surl);
sld = stylereader.parseSLD();
// the RasterSymbolizer Helper
rsh_SLD = new RasterSymbolizerHelper(gc, null);
// build the RasterSymbolizer
final RasterSymbolizer rs_2 = extractRasterSymbolizer(sld);