Hi, I load dem (srtm) data that contains NO_DATA cells. I want to calculate
z-values for Coordinates (using bilinear interpolation). My problem is now
that some cells have NO_DATA (-32767) values. Is there an interpolation
method that can ignore NO_DATA? I know there is no perfect solution and in
theory all cells could be NO_DATA.
A simple approach that uses only the valid neighbors coul work in my case.
Any ideas how to achieve that?
Here is the code I currently use:
GeoTiffReader reader = new GeoTiffReader(f);
GridCoverage2D c = reader.read(null);
GridCoverage2D coverage = Interpolator2D.create(c,
Interpolation.getInstance(Interpolation.INTERP_BILINEAR));
Point2D.Double p = new Point2D.Double(10.4, 52.1);
double[] r = new double[1];
coverage.evaluate(p, r);
Cheers,
Jan
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