[postgis-users] I can't use contains (Postgis compiled with GEOS)

[Rhys Ickeringill]

Jamie,

I'm still pretty new to all this, so could easily be misguiding you.

If you are using linux, find and cd into the directory where
liblwgeom.so.1.0 resides (mine is in /usr/local/pgsql/lib). Execute `ldd
liblwgeom.so.1.0` and it will give you a listing of the library dependancies
of liblwgeom.so.1.0. In this list should be libgeos.so.2.

If it is not listed at all, you haven't compiled in support for GEOS. If it
is listed as being "not found", you need to move libgeos.so.2.1.1 into a
directory where the linux dynamic linker looks for libraries. How you find
out where this is varies between linux flavours - looking at your
LD_LIBRARY_PATH is one, studying /etc/ld.conf is another.

Given what you have described, I would suggest the first option is most
likely the problem, which means GEOS was not successfully found during
compilation, despite your changes to Makefile.config.

HTH

Rhys



----- Original Message ----- 
From: "Jaime Carrera" <jaicarrerahdez at yahoo.com>
To: "PostGIS Users Discussion" <postgis-users at postgis.refractions.net>
Sent: Thursday, June 02, 2005 9:50 AM
Subject: [postgis-users] I can't use contains (Postgis compiled with GEOS)


> Greetings all,
>
> I'm new to postgis and am trying to show the points
> located inside a polygon (I compiled PostGIS by
> modifying the Makefile.config file to use GEOS:
> USE_GEOS=1\ GEOS_DIR=/usr/local). I'm using the
> following query:
>
> SELECT w.id FROM weather as w, muni_mpoly as m WHERE
> w.coords && m.grass_poly AND contains
> (m.grass_poly,w.coords);
>
> And get the following:
>
> ERROR:  intersects:: operation not implemented -
> compile PostGIS with JTS or GEOS support
>
> ------
> So, I'm doing something wrong here, but I don't know
> what it is.
>
> Thanks
>
> Jaime
>
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