Hi,

I use GeoServer with some GeoTiff data files.

My set of GeoTiff data files covers a limited area (for example a BBox(-2, -2, 
+2, +2))

Is it possible to get PNG files from WMS GeoServer service with transparent 
color where there is no data available (ie outside my BBox) ?

For example :

- if I request for a PNG file with BBox(+5, +5, +8, +8) => I want to get a 
fully transparent PNG file
- if I request for a PNG file with BBox(0, 0, +4, +4) => I want to get a PNG 
file with data in the area (0, 0, +2, +2) and transparent anywhere else

Thanks.

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