Hi Michael,
Thanks for your answer. I have tried the first method and made the sample
model 1000 x 1000. But I still get the same out-of-bounds exception.
I further simplified the program to just deal with 100 x 100 size array and
image and still get the same exception
(java.lang.ArrayIndexOutOfBoundsException: 100)
For reference, the code is:
int[][] data = new int[100][100];
ColorModel colorModel = new ComponentColorModel(
ColorSpace.getInstance(ColorSpace.CS_GRAY), false, false,
ColorModel.TRANSLUCENT, DataBuffer.TYPE_INT);
SampleModel model = new BandedSampleModel(DataBuffer.TYPE_INT, 100,
100, 1);
DataBuffer buffer = new DataBufferInt(data, data.length);
WritableRaster raster = Raster.createWritableRaster(model, buffer,
null);
BufferedImage img = new BufferedImage(colorModel, raster, false,
null);
GridCoverageFactory factory =
CoverageFactoryFinder.getGridCoverageFactory(null);
Envelope2D envelope = new
Envelope2D(CRS.getProjectedCRS(DefaultGeographicCRS.WGS84), 0, 0, 100, 100);
GridCoverage2D cov = factory.create("Coverage", img, envelope);
File outputFile = new File("D:\\Output.tif");
GeoTiffFormat format = new GeoTiffFormat();
GeoTiffWriter writer = (GeoTiffWriter)format.getWriter(outputFile);
writer.write(cov, null);
Do you see any problem with this code?
Out of interest, I made the array 2000 x 2000 while keeping the rest the
same, and still get an out-of-bounds exception at 2000.
Many thanks,
Jan
On Sun, Dec 6, 2009 at 8:45 AM, Michael Bedward
<[email protected]>wrote:
> Hi Jan,
>
> It looks like a mix up between your data array size and your image size.
>
> BufferedImages only have a single image tile so when you create your
> sample model like this...
>
> > SampleModel model = new
> > BandedSampleModel(DataBuffer.TYPE_INT, 100, 100, 1);
>
> And use that to create your image...
>
> > BufferedImage img = new BufferedImage(colorModel, raster, false,
> null);
>
> You are making a 100 x 100 image.
>
> The problem is that you used your data array size to create the data
> buffer and raster...
>
> Then you use your 1000 x 1000 data matrix to create a data buffer and
> raster
>
> > DataBuffer buffer = new DataBufferInt(data, data.length);
> > WritableRaster raster = Raster.createWritableRaster(model,
> buffer, null);
>
> So when you try to use the image by writing our the coverage to a
> GeoTiff, you get the array out of bounds message.
>
> To fix the problem you can either make your sample model 1000 x 1000
> or use a different kind of image that supports multiple image tiles.
> The former is easier, the latter can make your app less of a memory
> hog depending on how you use the data.
>
> Hope this helps - get back to us if you need more info.
>
> Michael
>
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