[postgis-users] Re: C question, PG_RETURN_POINTER: GPC integration

[Nicolas Ribot]

Mr Ono,
I have modified the files during the Week-end to include other functions.
I can send them to you if you are interested.

Nicolas Ribot

>
>   I've succeeded to compile scot_gpc.c and create test_geogpc function.

>  I've tried these SQL statements.
> create table testgpc(id integer, the_geom geometry);
> insert into testgpc (id, the_geom) values (1,'POLYGON((0 0 0,0 5 0,5 50,5 0
> 0,0 0 0))');
> insert into testgpc (id, the_geom) values (2,'POLYGON((0 0 0,0 15 0,5 15 0,5
> 0 0,0 0 0))');
>
> select test_geogpc
>   (
>   (select the_geom from setagayaku where gid=1),
>   (select the_geom from setagayaku where gid=2)
>   );
>
>  However I've got the following error messages.
>
> NOTICE:  Entering test_geogpc. Int: 666
> ERROR:  Incompatible types for 2 geometries (expected POLYGON)
> NOTICE:  Entering test_geogpc. Int: 666
> ERROR:  Incompatible types for 2 geometries (expected POLYGON)
>
>  I've checked my entry geometries' types using geometry type function. The
> result was that their types were all "Polygon."
>
>  Could you tell me anything wrong with these statements?
>
>  Best Regards.
>
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