[Geotiff] Proposed TOWGS84 GeoKey for GeoTIFF

[Frank Warmerdam]

Folks,

It has been an irritant to me for some time that there is no way of
recording a preferred datum transformation for a coordinate system in
GeoTIFF format.  I would like to rectify that with an unofficial GeoKey
to record OGC WKT style TOWGS84 values.  I have written up a brief
proposal at:

   http://trac.osgeo.org/geotiff/wiki/TOWGS84GeoKey

I am interested in thoughts from the community.  Barring suggested
improvements or strong negative feedback I'll commit that in libgeotiff
trunk shortly.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent