See http://cran.us.r-project.org/doc/FAQ/R-FAQ.html#How-do-I-produce-PNG-graphic s-in-batch-mode_003f
Andy > From: doktora v > > I am trying to run R from an apache C++ module in a shell script to > plot some data to display it in apache later. I get the error > (reported in apache's logs): > > Xlib: connection to ":0.0" refused by server > Xlib: No protocol specified > Error in X11(paste("png::", filename, sep = ""), width, > height, pointsize, : > unable to start device PNG > In addition: Warning message: > unable to open connection to X11 display`' > Execution halted > > Is anyone familiar with this (i.e. running R from a non-X > environment)? Is there a way to get around this? I've seen some stuff > about virtual devices, but have no idea if it works or where to > start. If there is a simpler solution, please let me know. > > -- doktora > > > I run the following shell script from the apache module using execve: > ------------------------------------------------------ > DISPLAY=:0.0 > export DISPLAY > > if $R --vanilla --quiet < $rfile >$log ; then > echo "Success" > else > echo "There were errors in $0, see $log" > fi > ------------------------------------------------------ > > And $rfile contains this: > ------------------------------------------------------ > png(filename = "/tmp/plot.png", width = 510, height = 360); > plot(<some graph>) > dev.off() > > ______________________________________________ > [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 > > ______________________________________________ [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