[postgis-users] error in isvalid function

[ksa-nil5]

>> 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;
>

search=# select postgis_full_version();
                                        postgis_full_version
-----------------------------------------------------------------------------------------------------
 POSTGIS="0.9.0" GEOS="2.0.1" PROJ="Rel. 4.4.8, 3 May 2004" USE_STATS DBPROC="0.0.1" RELPROC="0.0.1"
(1 row)