[GRASS-user] r.terraflow: dcell low precision?

[Markus Metz]

Rich Shepard wrote:
>   Starting r.terraflow produces this warning:
>
> WARNING: raster aber5m is of type DCELL_TYPE --precision may be lost.
>
>   My understanding is that raster maps have three possible data types:
> integer (cell), floating point single-precision (fcell), and floating 
> point
> double precision (dcell). If my understanding is correct then I don't get
> the warning.
>
>   Explanation, please.
r.terraflow stores elevation internally as floating-point single 
precision which is more than enough if elevation is in meters or feet so 
you can safely ignore the warning.