[postgis-users] Negative buffer chokes on Alaska
pramsey at cleverelephant.ca
Mon Jun 23 07:02:10 PDT 2008
Have you run as ST_IsValid test on it?
On Sun, Jun 22, 2008 at 7:47 PM, Sean Fulton <seanasy at gmail.com> wrote:
> I have Census congressional district data loaded in a Postgis db. I want to
> do a negative buffer on all of the districts. The data is in US National
> Atlas (EPSG:2163).
> Whenever I try to do a large (~10,000 m) buffer postgresql crashes. I
> eventually figured out that Alaska was causing the problem. Reducing the
> buffer gives unusual results for Alaska. A -500m buffer produces the image
> attached (blue = buffer result, green = original data).
> Postgis: POSTGIS="1.3.3" GEOS="3.0.0-CAPI-1.4.1" PROJ="Rel. 4.6.0, 21 Dec
> 2007" USE_STATS
> Original data: http://dpaste.com/58232/plain/
> Is it a problem with the data? With Postgis?
> Thanks in advance,
> postgis-users mailing list
> postgis-users at postgis.refractions.net
More information about the postgis-users