Hi,
i have a problem with the GeoTiff writer:
I create a GridCoverage which is correctly colored and showed, for e.g. by
executing gc.show(). Writing it into png and normal tif-files works also
without any problem, but not in GeoTiff.
For inking the image i use the SLDParser with an associated style file.
Coupling the rendered image to the GridCoverage2D is processed here:
////////////////
GridCoverage2D toWrite = CoverageFactoryFinder.getGridCoverageFactory(null)
.create("Precipitation",
((GridCoverage2D)rsh_SLD.getOutput()).geophysics(false).getRenderedImage(),
env,gsdPrec,null,null);
///////////////
Writing the Geotiff is processed here:
///////////////
GeoTiffFormat format = new GeoTiffFormat();
/*final File writeFile = new File("Test.tiff");
final GridCoverageWriter writer = format.getWriter(writeFile);
toWrite.show();*/
GeoTiffWriteParams wp = new GeoTiffWriteParams();
wp.setCompressionMode(GeoTiffWriteParams.MODE_EXPLICIT);
wp.setCompressionType("LZW");
ParameterValueGroup paramWrite = format.getWriteParameters();
paramWrite.parameter(AbstractGridFormat.GEOTOOLS_WRITE_PARAMS.getName().toString()).setValue(wp);
try
{
File filetiff = new File(filename);
GeoTiffWriter gcw = (GeoTiffWriter)format.getWriter(filetiff);
gcw.write(toWrite,
(GeneralParameterValue[])paramWrite.values().toArray(new
GeneralParameterValue[1]));
gcw.dispose();
}
catch (Exception e)
{
e.printStackTrace();
}
/////////////////
The written files size is about 3MB so i think it is not empty, but it is
only black.
Any ideas?
Thank you,
Matthias Hofmann
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