Kristian Thy wrote: > 1) http://en.wikipedia.org/wiki/Well-known_text > 2) http://dev.mysql.com/doc/refman/5.0/en/gis-wkb-format.html 3) http://postgis.refractions.net/docs/ch04.html#RefObject Martin. -- Unix _IS_ user friendly - it's just selective about who its friends are ! --------------------------------------------------------------------------