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Adding scale, offset, units metadata to geotiff

FYI:

Martin Daly and I are discussing adding this tag to the thredds server geotiffs:

 http://www.awaresystems.be/imaging/tiff/tifftags/gdal_metadata.html


this would allow us to put out 8-bit geotiffs, but clients could convert back to floats, using a scale and offset.
We can specify the units also!!

Any comments on this idea are welcome.


 
 
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