[Geotiff] Setting transparency in GeoTIFFs

[Ted Florence]

If you have the Geogaphic Imager plugin for Adobe Photoshop you can do 
this and much more right in Photoshop CS2 or CS3.
www.geographicimager.com

Gordon Keith wrote:
> Is there a simple way of setting the background to transparent with GeoTIFFs.
>
> I've been looking for a way of setting background to transparent with 
> GeoTIFFs. The ImageMagick convert program can set a transparency mask for 
> normal TIFFs, but is not GeoTIFF aware. At the moment I am doing the 
> following:
>
>         listgeo $MAPNAME.tif > $MAPNAME.geo
>         convert -transparent white -depth 8 $MAPNAME.tif trans_$MAPNAME.tif
>         geotifcp -c lzw -g $MAPNAME.geo trans_$MAPNAME.tif $MAPNAME.tif
>
> which works OK, but is a little messy.
>
> Is there are cleaner method of doing this?
>
> Regards
> Gordon
>
>   

-- 
Ted Florence
ted at avenza.com

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