R: [udig-devel] Udig 1.1.1 problems to read sample value in geotiff 16 b

["Pasquale Paola" <pasquale.paola@xxxxxx>]

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: udig-devel-bounces@xxxxxxxxxxxxxxxxxxxxx
[mailto:udig-devel-bounces@xxxxxxxxxxxxxxxxxxxxx] 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-geot
> iff-16-bit-tp21934226p21934226.html
> Sent from the udig-devel mailing list archive at Nabble.com.
>
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