Hi Helmut, please post this link to their list:
http://grass.osgeo.org/wiki/Computational_region thanks Markus On Thu, Apr 26, 2012 at 10:26 PM, Helmut Kudrnovsky <[email protected]> wrote: > FYI > > http://lists.osgeo.org/pipermail/qgis-developer/2012-April/019781.html > > >> To achieve this, we have to solve the problem of how to use grass regions, >> a very useful concept for subsetting an analysis or changing its >> resolution. > > As I'm having to do with topology in PostGIS I'm very interested in the > concept behind GRASS regions. It's interesting that you mention a resolution > as I've been thinking for a while that a default resolution could be > computed > given an extent in that the maximum error double precision floating points > can > represent depend on the biggest absolute value one may ever want to use. > An extent (region) would then give you these upper limits so to be possibly > usable to compute a resolution. > > Is this anything close to what GRASS is using these regions for ? > > Yeah, I know this is probably not the right list to discuss this, but > I'm hoping grass people are also here and can help in harmonizing topologies > some more, on a neutral gameboard :) > > --strk; > > ----- > best regards > Helmut > -- > View this message in context: > http://osgeo-org.1560.n6.nabble.com/Qgis-developer-GRASS-regions-tp4931799p4931799.html > Sent from the Grass - Dev mailing list archive at Nabble.com. > _______________________________________________ > grass-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-dev _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
