The data type is always different, in all my geotiff. Look, I think that I have understood the problem: if I invoke raster.getSampleFloat(...) the problem is solved (for the attached geotiff), but how can i have the right data type, to invoke raster.getSample(...) or raster.getSampleFloat(...). Perhaps java.awt.image.DataBuffer.TYPE_... is wrong?
Ciao Pa -----Messaggio originale----- Da: [email protected] [mailto:[email protected]] Per conto di andrea antonello Inviato: martedì 10 febbraio 2009 15.53 A: User-friendly Desktop Internet GIS Oggetto: Re: R: [udig-devel] Udig 1.1.1 problems to read sample value in geotiff 16 bit Hi Pasquale, I don't have lots of time right now, but very quickly: - in your getSample method did you check if the called method enters the right type? - did you check whether the geoRes you get as Gridcoverage2d is of type rendered (for visualization) or geophisical view? I assume you will need the geophisical one. Does this help you a bit further? Ciao Andrea On Tue, Feb 10, 2009 at 3:42 PM, Pasquale Paola <[email protected]> wrote: > This is my core code: > ILayer layer = geoOpt.getLayer(); > GridCoverage2D geoRes = null; > /* > * List<IGeoResource> bobobo = > layer.getGeoResources(); for > * (IGeoResource item : bobobo) { > GridCoverage geo = > * item.resolve(GridCoverage.class, new > NullProgressMonitor()); > * geoRes = (GridCoverage2D) geo; > item.getInfo(new > * NullProgressMonitor()); > * > * if (geoRes != null) break; } > */ > > geoRes = (GridCoverage2D) > layer.getGeoResource().resolve( > GridCoverage.class, new > NullProgressMonitor()); > > Raster raster = > geoRes.getRenderedImage().getData(); > String sample = > getSample(raster.getSample(i, j, z), dataSampleType); > > ---------------------------------------------------------------------- > ------ > ------------------------------------------------ > > /*******/ > private static String getSample(Object sample, int type) > { > String result = ""; > try > { > switch (type) > { > case java.awt.image.DataBuffer.TYPE_BYTE: > result = ((Byte) sample).toString(); > break; > case java.awt.image.DataBuffer.TYPE_DOUBLE: > result = ((Double) > sample).toString(); > break; > case java.awt.image.DataBuffer.TYPE_FLOAT: > result = ((Float) > sample).toString(); > break; > case java.awt.image.DataBuffer.TYPE_INT: > result = ((Integer) > sample).toString(); > break; > case java.awt.image.DataBuffer.TYPE_SHORT: > result = ((Short) > sample).toString(); > break; > case > java.awt.image.DataBuffer.TYPE_UNDEFINED: > result = sample.toString(); > break; > case java.awt.image.DataBuffer.TYPE_USHORT: > result = ((Short) > sample).toString(); > break; > default: > break; > > } > } catch (ClassCastException e) > { > result = ((Integer) sample).toString(); > } > return result; > } > > > > Ciao > Pasquale > > > -----Messaggio originale----- > Da: [email protected] > [mailto:[email protected]] Per conto di andrea > antonello > Inviato: martedì 10 febbraio 2009 15.29 > A: User-friendly Desktop Internet GIS > Oggetto: Re: [udig-devel] Udig 1.1.1 problems to read sample value in > geotiff 16 bit > >> I'm developing a plugin for udig(1.1.1 win32) and when I try to read >> the sample value of pixel in a geotiff with 16 bit of depth, I >> obtain always the same value 2147483647 (that is 2^31). Some ideas? >> Can i read sample value of geotiff with 16 bit of depth? > > How exactly are you reading the image to get your information? > Not sure how raster were dealth with in udig 1.1, but you should be > able to access the imagereader and get your values. > Do you have some code so show us? > > Ciao > Andrea > > >> >> Cheers >> -- >> View this message in context: >> http://www.nabble.com/Udig-1.1.1-problems-to-read-sample-value-in-geo >> t >> iff-16-bit-tp21934226p21934226.html >> Sent from the udig-devel mailing list archive at Nabble.com. >> >> _______________________________________________ >> User-friendly Desktop Internet GIS (uDig) http://udig.refractions.net >> http://lists.refractions.net/mailman/listinfo/udig-devel >> > _______________________________________________ > User-friendly Desktop Internet GIS (uDig) http://udig.refractions.net > http://lists.refractions.net/mailman/listinfo/udig-devel > > > _______________________________________________ > User-friendly Desktop Internet GIS (uDig) http://udig.refractions.net > http://lists.refractions.net/mailman/listinfo/udig-devel > _______________________________________________ User-friendly Desktop Internet GIS (uDig) http://udig.refractions.net http://lists.refractions.net/mailman/listinfo/udig-devel _______________________________________________ User-friendly Desktop Internet GIS (uDig) http://udig.refractions.net http://lists.refractions.net/mailman/listinfo/udig-devel
