[postgis-users] Problems with GEOS and Postgis functions working together

[Christian Fuerpass]

Hello,

After installing GEOS all GEOS functions are working wonderful, but the 
"old" functions are not working correct.

I´ll show an example:
My sytem:
* PostgreSQL 7.3.4 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.2 20020903 (Red Hat Linux 8.0 3.2-7)
* postgis-cvs (nov 10 2003)
* proj 4.4.7
* geos 1.0.0

My query:

select envelope('SRID=31297;MULTIPOINT((617640.798913 472905.257284),(633201.0949 484575.479274))');

My result with GEOS:

SRID=31297;POLYGON((-1.99461388621126 77.2785797330432,617640.798913 472905.257284,617640.798913 484575.479274,633201.0949 472905.257284,617640.798913 472905.257284))

My result without GEOS:
SRID=31297;POLYGON((617640.798913 472905.257284,633201.0949 472905.257284,633201.0949 484575.479274,617640.798913 484575.479274,617640.798913 472905.257284))

I don´t know why the old functions after installing GEOS don´t work anymore correct.

Thanks for any help,
best regards

Christian Fuerpass