Hi Wouter Well, some of the following came to mind: POLYFILL POLYGON POLYLINE The problem with POLYFILL is that is a direct graphic routine, not a new graphic one. POLYGON and POLYLINE you should be able to use it in the new graphic system. The idea is then to fill the polygon with one color depending the x range or y range. Here I found also that it was done in direct graphic as well: http://www.idlcoyote.com/...s_tips/fillarea.html Cheers, Fernando