I am reading some georeferenced images (png, jpg) which when rendered I
would like to have specific colors and transparency. How do I do this?
Do I use ColorMap or do I use Category as explained in
http://geotools.codehaus.org/Using+Grid+Coverage
I've tried to use ColorMap but I cannot get it to do anything for me:
URL imgURL = (new File("data/f50level.png")).toURL();
WorldImageReader wir = new WorldImageReader(imgURL);
GridCoverage2D gc1 = (GridCoverage2D)wir.read(null);
ColorMap cm1 = sb.createColorMap(new String[] {""}, new double[]{-1},
new Color[]{Color.blue}, ColorMap.TYPE_RAMP);
RasterSymbolizer rs1 = sb.createRasterSymbolizer(cm1, 0.5);
I want for these images to be transparent and a range of of a single
color (typically blue).
I am bit confused on how to proceed, or whether in the end it is even
possible to do this.
Thanx
gaby
--
***************************************************************
** Gabriella Turek [EMAIL PROTECTED] **
** National Institute of Water & Atmospheric Research (NIWA) **
** PO Box 8602 Christchurch New Zealand +64-3-348-8987x3724 **
***************************************************************
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