[GRASS-user] High resolution dem

[Markus Neteler]

On Sun, Feb 28, 2010 at 3:15 AM, Hamish <hamish_b at yahoo.com> wrote:
...
> Frank Broniewski wrote:
...
>> My region is 17.000 x 13.000 cells wide (5m horiz. resolution). So my
>
> that is getting big, but shouldn't be too bad. except perhaps for
> v.surf.rst (and r.fillnulls which uses it).
>
> hmmm... I wonder if it would speed up r.fillnulls & save lots of memory
> if we added the no-table and no-topology -b and -z flags to the
> r.to.vect step in it?

This requires that v.info reads without topology. I have locally backported
the changed from MarkusM and modified r.fillnulls.
Result: as slow/fast as before.

A real alternative is to use v.surf.bspline rather than v.surf.rst which will be
way faster.

Markus