change 4-bytes-per-cell to 1-byte-per-cell?

Angus Carr apcarr at FLASH.LakeheadU.CA
Fri Feb 28 16:58:07 EST 1997


Try r.mapcalc "new = old"
That should work. You will have to play with the colors a bit, but it will
work.

Angus.

On Fri, 28 Feb 1997, Bill Hargrove wrote:

> 
> If I have a 4-bytes-per-cell GRASS raster map that now only contains values
> less than 255, is there some GRASS tool that will change it to be only
> 1-byte-per-cell to save disk space?
> 
> r.resample does not appear to do it, and I don't believe that r.compress or
> r.mapcalc will figure this out either.
> 
> I'd appreciate it if someone had advice about this ...
> 
>                                          Bill H.
> --------------------------------------------------------------------------------
>      ____                             Oak Ridge National Laboratory
>       /  )      /  /      /  /        Computational Physics and Engineering Div.
>      /--<   o  /  /      /--/         P.O. Box 2008, M.S. 6274
>     /___/__<__/__/_     /  / _        Oak Ridge, TN  37830-6274
>    William W. Hargrove                (423) 241-2748
>    hnw at mtqgrass.esd.ornl.gov          (423) 574-4634 (fax)
> --------------------------------------------------------------------------------
> 
> 



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