[mapguide-users] raster ECW transparency

[Johan Van de Wauw]

I've not used the GDAL provider myself, but using AIMS raster driver the
only way I found to make ecw transparent was adding a alpha layer. I did
this using the gdal command line utility "nearblack" with the setalpha
option:
nearblack -setalpha -o out.tif in.ecw
And afterwards converting the output to ecw again (exporting to ecw was not
supported by nearblack).

Johan



On Mon, Feb 4, 2013 at 5:27 PM, StuartSteel
<stuart.steel at atkinsglobal.com>wrote:

> Bump.
>
> I cannot believe that Duck and myself are the only two people who require
> nodata transparency using the GDAL raster provider?
>
> Can anyone shed some light on this, please?
>
>
>
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