[GRASS-user] High resolution dem

Markus Neteler neteler at osgeo.org
Thu Mar 18 19:36:47 EDT 2010

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.


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