I was just reading the same bug report you pointed to in the udig mailinglist. :)
Thanks, Andrea > It is a known bug in imageio tiff support see > https://jai-imageio-core.dev.java.net/issues/show_bug.cgi?id=180. > It's been fixed in imageio-ext, we should be able to include the fix > in the next release of geotools. > > > Simone. > ------------------------------------------------------- > Ing. Simone Giannecchini > GeoSolutions S.A.S. > Owner - Software Engineer > Via Carignoni 51 > 55041 Camaiore (LU) > Italy > > phone: +39 0584983027 > fax: +39 0584983027 > mob: +39 333 8128928 > > > http://www.geo-solutions.it > http://simboss.blogspot.com/ > http://www.linkedin.com/in/simonegiannecchini > > ------------------------------------------------------- > > > > On Mon, Feb 2, 2009 at 2:04 PM, andrea antonello > <[email protected]> wrote: >> I know this topic has been touched many times, but browsing all those >> email, I couldn't find a solution to my problem. >> >> I have a gridcoverage and want to write it to disk as a floating point >> values tiff, let's say an temperature map. >> >> So I go like: >> >> GridCoverage2D geoCoverage = coverage2D.view(ViewType.GEOPHYSICS); >> RenderedImage renderedImage = geoCoverage.getRenderedImage(); >> File tmpTiff = File.createTempFile("jgrass_", ".tiff"); >> GeoTiffWriter writer = new GeoTiffWriter(tmpTiff); >> writer.write(geoCoverage, null); >> >> The result I get is a transparent tiff, which seems to hold some data. >> >> The thing that now makes me wonder is that even if the coverage >> contains a floating point reference: >> >> ...sampleModel=ComponentSampleModelJAI: dataType=5 numBands=1 >> width=322 height=298 bandOffsets=[ 0 ] >> colorModel=FloatDoubleColorModel: ColorModel: #pixelBits = 64 >> >> when I do a gdalinfo on the created tiff, I see at the end: >> >> "Band 1 Block=322x8 Type=Int32, ColorInterp=Gray >> Computed Min/Max=0.000,19.000" >> >> The type is Int32. >> what do I have to do to get it writing my temperatures in floating point? >> >> Thanks for any hint, >> Andrea >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by: >> SourcForge Community >> SourceForge wants to tell your story. >> http://p.sf.net/sfu/sf-spreadtheword >> _______________________________________________ >> Geotools-gt2-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users >> > ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
