[postgis-users] Polygon length zero

[Andrea Peri 2007]

Hi,

using this polygon:
MULTIPOLYGON(((1 1, 2 3, 10 10, 1 1)))

The Length return is zero.

Perhaps I'm forget something ?

This is my simply sql code.

create table _uno (id serial primary key);
SELECT AddGeometryColumn('_uno', 'geom', 3003, 'MULTIPOLYGON', 2);
insert into _uno (geom) values (ST_GeomFromText('MULTIPOLYGON(((1 1, 2 
3, 10 10, 1 1)))',3003));
select st_length(geom) from _uno

-------
0

I'm using Postgres 8.4.3 - Postgis 1.5.1 on windows 7 - 64 bit.

Thx,

Andrea Peri.