[postgis-users] Re: Problem with MultiLineString

[Ken Southerland]

Sorry, I copied the wrong error message after the query, that was from a 
multipolygon issue that I was simultaneously investigating.  The real 
message for this is ...

NOTICE:  Too few points in geometry component at or near point 491216 532661

Sorry for the misinformation.  Still in need of help!  :)

Ken


Ken Southerland wrote:
> This problem occurs on versions...
> POSTGIS="1.3.1" GEOS="3.0.0rc4-CAPI-1.3.3" PROJ="Rel. 4.5.0, 22 Oct 2006"
> POSTGIS="1.3.2" GEOS="3.0.0-CAPI-1.4.1" PROJ="Rel. 4.6.0, 21 Dec 2007"
> 
> 
> The first query gives...
> 
> select st_isvalid( st_GeomFromText('MULTILINESTRING((491181.9816 
> 532686.6037,491209.6059 532664.6521),(491215.9577 
> 532660.8051,491215.9577 532660.8051))'));
> 
> NOTICE:  IllegalArgumentException: Number of points must be 0 or >3
>  st_isvalid
> ------------
>  f
> 
> ... while the second gives...
> 
> select st_isvalid( st_GeomFromText('MULTILINESTRING((491181.9816 
> 532686.6037,491209.6059 532664.6521),(491215.957 532660.8051,491215.9577 
> 532660.8051))'));
> 
>  st_isvalid
> ------------
>  t
> 
> ...and the only difference between the two is that the first point of 
> the second line has an x value of 491215.9577 in the first query and 
> 491215.957 in the second.  In other words, the last seven is just 
> stripped and it works.
> 
> What gives here?!  Any ideas?
> 
> Ken Southerland
>