[R] Plot availability

Duncan Murdoch murdoch at stats.uwo.ca
Fri Sep 19 16:11:01 CEST 2008

On 9/19/2008 9:32 AM, john crepezzi wrote:
> Is it possible to see if a plot is already open before I call lines()?

I don't think so.  You can see if a graphics device is open by looking 
at dev.cur(), but I don't think there's a test for plot.new().  I'd just 
wrap the call in try() if you're not sure it will work.

Duncan Murdoch

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