Hi all,
I'm not sure if this is a prob with the javadocs (possible), or the
GridCoverage2D class (unlikely) or my understanding (very probably)...
I was trying to create a GC2D object from an array of double data as follows:
DataBuffer buffer = new DataBufferDouble(data, data.length);
SampleModel sample = new
BandedSampleModel(DataBuffer.TYPE_DOUBLE, cols, rows, 1);
WritableRaster raster = Raster.createWritableRaster(sample,
buffer, null);
Envelope2D envelope = new Envelope2D(crs, minX, minY, width, height);
GridCoverageFactory factory =
CoverageFactoryFinder.getGridCoverageFactory(null);
GridCoverage2D cov = factory.create(name, raster, envelope);
This provokes a runtime exception about having the wrong ColorModel.
So I changed the code to the following...
ColorModel colorModel = new ComponentColorModel(
ColorSpace.getInstance(ColorSpace.CS_GRAY), false, false,
ColorModel.TRANSLUCENT, DataBuffer.TYPE_DOUBLE);
SampleModel model = new
BandedSampleModel(DataBuffer.TYPE_DOUBLE, cols, rows, 1);
DataBuffer buffer = new DataBufferDouble(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, minX, minY, width, height);
GridCoverage2D cov = factory.create(name, img, envelope);
...and all works fine.
My question is: should the javadocs say that the factory create method
used in the first version of my code does not work with double data ?
Or is this a bug ? Or (more likely) have I missed something ?
cheers
Michael
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