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I am using ggplot2 on ubuntu 12.04. By default my x11 type is set to Xlib. So when I use a smoother in qplot, I get an error like:
“semi-transparency is not supported on this device: reported only once per page”.
However, if I call x11(type=”cairo”), everything works fine.
How do I get cairo as the default backend for x11?
Define another function ‘x11’ which sets the proper type: