[postgis-users] Some questions concerning postgis
Neil.Young at Freenet.de
Tue Jan 27 10:02:43 PST 2009
Just to let you all know (if somebody of you has this problem to solve too:
I could made this run:
It's really worth a try. I was able to reduce my geometries in
dimensions while keeping common borders.
Chris Hermansen schrieb:
> By Gauss Krüger III do you mean zone 3? That seems to be in
> spatial_ref_sys. If so, certainly you can re-project your data.
> With respect to reducing vertices, you might prefer
> st_simplifypreservetopology(). I've also had success with
> Torsten Lange wrote:
>> st_simplify() might be a function to reduce the no of vertices. Maybe
>> also st_buffer(yourGeom, 0) could help to get valid polygons in
>> general keeping the geometry.
>> Regards, Torsten
>> Neil.Young schrieb:
>>> Now, that I have valid data in my db, the following questions arise:
>>> 1) The projection of the data is Gauss Krüger III. Possible to
>>> re-project to lets say EPSG 4326?
>>> 2) The polygons contain too much vertices. I would like to reduce
>>> it, but keep the common borders valid. Does anybody know, how this
>>> could be achieved?
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