Hi,
I am working on a GIS project that using Geoserver and Image Mosaic plugin.
But I've got a problem with this plugin.
My case is:
Environment:
- Geoserver 1.7.3
- Image mosaic module 2.5.4
- Geotiff data about 200 GB with nodata value
set to -9999
- Data is tiled to 2048x2048 tiles but I do
not have all tiles for whole area (our area cover all land and sea area, but
we had tiles that cover land parts)
Problem:
- When I use official module (getting from
geotool site), it always return 0.0 for background values with missing tiles
area.
- When I get source code of mosaic module and
customize it. I set background values to -9999 as follow:
double[] bgValues = new double[] {-9999};
pbjMosaic.setParameter("backgroundValues",
bgValues);
and also I changed
pbjMosaic.setParameter("sourceThreshold", null);
then it works for nodata values (-9999.0).
But when I do the getfeatureinfo request for
the positions that contain negative values, the response values always be
0.0. I saw that all negative values become 0.0
I tried a lot with that but cannot find the solution. Could you guys kindly
help me about that.
Thanks,
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