The problem I was mentioning about the empty PDF file is an inconsistency with the behavior of upstream's version under Mac OS X (I haven't tried upstream's gnuplot under Debian). I suppose that the bug is in Debian's version (which could be an upstream bug or not) as the gnuplot manual says:
3.24.49 output -------------- By default, screens are displayed to the standard output. ^^^^^^^^^^ ^^^^^^^^^^^^^^^ Under Mac OS X, gnuplot behaves like this. But not under Debian. -- Vincent Lefèvre <[email protected]> - Web: <http://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / Arénaire project (LIP, ENS-Lyon) -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]

