Hey everyone,
I'm part of a team working at NOAA and we have developed a swan script that
analyzes data and generates plots for the forecasters. We are ready to put
the script on the cron and call it a summer but a technical issue has popped
up which has us puzzled.
When we run the script as an
Hmmm... the short answer is that your call to png() is requiring X11 to
generate the plot. Don't know what version you're running, but prior to
R 2.7.0, all png() calls needed access to the X server to create the
plots (on Unix). But with 2.7.0 and later, png() can be called with
type='cairo'
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