As far as I know, your options are (1) run Xvfb on the unix box, or (2) use the bitmap() device instead of jpeg(). Option 2 will require that ghostscript also be installed on the unix box.
Strictly speaking, it doesn't have to to be Xvfb. The requirement is that an X server be running. The R on that unix box probably does have an installed interactive device, but it is not available unless an X server is running, hence your FALSE from dev.interactive(). -Don At 12:49 PM +0200 6/21/05, [EMAIL PROTECTED] wrote: >Hey, > >i'm trying to set up an cgi web-application that produces maps and >other graphics with R. for local testing i used my laptop which has >an win xp OS. there everything works fine. now i try to move the >whole system over on an unix machine, mainly because i want to >establish a connection to a database. anyway, i'm using R 2.0.0 on >an other computer in a local network. here comes my problem: > >i can't create jpeg-files, neither by starting R via my cgi-script >nor by pasting the syntax directly into R. both ways i get the >following error message: > >error in X11; unable to start device JPEG; could not open JPEG file. > >i found out that there is no interactive graphic device for the >installed R-Version or it is not set correctly. as i tried >dev.interactive(), the response was [1] FALSE. > >i'm a bit lost at the moment. i wonder if there is a chance to >change or modify the interactive graphic device or if i really need >to run Xvfb "device" as someone suggested before on the R-help >mailing list. does someone has experience with this kind of trouble, >any help available from somewhere? > >thanks in advance, lars > >______________________________________________ >[email protected] mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html -- -------------------------------------- Don MacQueen Environmental Protection Department Lawrence Livermore National Laboratory Livermore, CA, USA ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
