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

[Paragon Corporation]

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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