[postgis-users] GEOS pointonsurface() threw an error!

Ricardo Bayley ricardo.bayley at gmail.com
Wed Aug 18 07:44:39 PDT 2010


I hope to be testing it next week

On Wed, Aug 18, 2010 at 4:41 AM, Paragon Corporation <lr at pcorp.us> wrote:

> BTW -  If any windows users want to try the trunk version (PostGIS 2.0) --
> we have experimental binaries (fairly recent as of last week)
>
> Here
> http://www.postgis.org/download/windows/experimental.php
>
> Which includes lots more functions such as ST_MakeValid and ST_Split.  As
> welll as Polyhedral Surface support and Raster support.
>
> The PostGIS Team is always very excited to squash bugs early.  So please
> let
> us know if you find problems or have trouble using the binaries.
>
>
> Thanks,
> Regina and Leo
> http://www.postgis.us
>
>
>
> -----Original Message-----
> From: postgis-users-bounces at postgis.refractions.net
> [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Andrea
> Peri 2007
> Sent: Wednesday, August 18, 2010 1:56 AM
> To: postgis-users at postgis.refractions.net
> Subject: [postgis-users] GEOS pointonsurface() threw an error!
>
> >My version is: "POSTGIS="1.5.0" GEOS="3.2.0-CAPI-1.6.0" PROJ="Rel.
> >4.6.1, 21 August 2008" LIBXML="2.7.6" USE_STATS"
> >PostgreSQL 8.4 running on a WINXP
> >
> >I was playing with the ST_IsValid() function and the ST_IsValidReason().
> >
> >What I notice is the geometry, of course, is not valid.
> >Reason: "Self-intersection[-6.4825e+006 -3.15411e+006]"
>
>
> With the trunk version there (postgis 2.0.0) you can try the
> ST_MakeValid(..)
>
> that turn the self-intersction in multi-polygon.
>
> Regards,
>
> Andrea.
>
>
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