in grass 7, there is new command: nviz_cmd it is possible to produce 3D images of landscape again! I'll do some demo next week. Jachym -- Jachym Cepicky e-mail: jachym.cepicky gmail com URL: http://les-ejk.cz GPG: http://www.les-ejk.cz/pgp/jachym_cepicky-gpg.pub