[postgis-users] error in isvalid function

[strk at refractions.net]

On Thu, Nov 04, 2004 at 06:23:28PM +0300, ksa-nil5 wrote:
> Hi, all!
> 
> I'm working with follow data (POLYGON):
> 
> POLYGON((37.654639 55.726496,37.654056 55.726947,37.653801 55.727333,37.653801 55.727435,37.654468 55.727483,37.656654 55.727466,37.656572 55.727063,37.656654 55.726713,37.657052 55.726531,37.657571 55.726365,37.658071 55.725961,37.658321 55.725609,37.658303 55.725374,37.658321 55.725609,37.658906 55.725309,37.659488 55.72511,37.658135 55.724571,37.657386 55.724922,37.657135 55.724873,37.65647 55.725274,37.655635 55.725828,37.655195 55.7265,37.655635 55.725927,37.654639 55.726496),(37.658321 55.725609,37.658906 55.725309,37.659488 55.72511,37.658906 55.725309,37.658321 55.725609))
> 
> search=# select isvalid(geometryFromText(the_geom));
> NOTICE:  IllegalArgumentException: degenerate ring (does not contain 3 distinct points)
> ERROR:  GEOS isvalid() threw an error!
> 
> search=# select isvalid(exteriorring(geometryFromText(the_geom)));
>  isvalid
> ---------
>  t
> (1 row)
> 
> search=# select isvalid(interiorringN(geometryFromText(the_geom),1));
>  isvalid
> ---------
>  t
> (1 row)
> 
> Any suggestions?
> 
> Thanks! 
> 
> Sergey Karin

What GEOS / PostGIS version are you using ?

SELECT postgis_full_version();

--strk;

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