Hi Matthias,
if you can share a whole test case (I mean: a fully coded java class as well
as the sample data needed to test it) I can take a look on it.
How do you "View" the output geotiff? (Which software are you using?)
Could you run a "gdalinfo -stats youroutputfile.tif" and let me know what is
reported?
Please, let me know.
Best Regards,
Daniele
On Tue, Feb 23, 2010 at 11:51 AM, Matthias Hofmann <
[email protected]> wrote:
> 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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--
-------------------------------------------------------
Eng. Daniele Romagnoli
Software Engineer
GeoSolutions S.A.S.
Via Carignoni 51
55041 Camaiore (LU)
Italy
phone: +39 0584983027
fax: +39 0584983027
mob: +39 328 0559267
http://www.geo-solutions.it
-------------------------------------------------------
------------------------------------------------------------------------------
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Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
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http://p.sf.net/sfu/intel-sw-dev
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