[R] X11 connection error in web cgi mode only
gisar at nus.edu.sg
Mon Mar 17 14:42:40 CET 2003
I am trying to create a web interface using Perl-CGI to call R plots and
to display them.
The following codes works perfectly fine when I copy and paste into the
console directly or if I save it into script.file and then R --no-save <
script.file producing the graphs.
jpeg("graph.jpeg", width=400, height=400)
Now, I put the line system("R --no-save < script.file > log_file") from
inside my cgi and then process it from client side, I get the following
Error in X11(paste("jpeg::", quality, ":", filename, sep = ""), width,
unable to start device JPEG
In addition: Warning message:
unable to open connection to X11 display`'
Why do I get this error and how can I fix it? Many thanks in advance.
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