[GRASS-user] [OT] basic question

[Hamish]

János Löbb wrote:
> It is not grass related.
> 
> I would like to know what is the biggest surface element in
> practice on a sphere or ellipsoid - triangle or square -
> that can be used as a two dimensional surface element if the
> radius of the sphere is R.
> 
> Any pointers to a Fine Manual is highly appreciated.


you might better pose this question on the PROJ.4 mailing list,
and better describe your usage application and threshold for
error.

http://proj.osgeo.org


Hamish