[Gvsig_english] Field calculator::possibility to calculate x/y coordinates?

[Antonio Falciano]

Wolfgang Qual wrote:
[...]
> Therefore, my question should be a different one: is there a possibility to 
> identify the centres of gravity for a polygon theme? 

Hi Wolfgang,
you can do it simply using PostGIS. You have to:
1. export your polygon theme to PostGIS;
2. create a view in which you calculate centroids coords;
3. add view in gvSIG as layer or table from PostGIS.

Regards,
Antonio Falciano