Colleagues
I have a lengthy script that calls mtext. Under most circumstances, a graphics
device is open and a plot exists, in which case mtext works as expected.
However, there are some instances where the graphics device is open but no plot
exists. When mtext is called, I receive an error message:
Error in mtext(1) : plot.new has not been called yet
The solution is to confirm that:
a. the device is open: length(dev.list()) > 0
b. whether plot.new has been called.
I need help on the latter - how does one test whether plot.new has been called?
Thanks in advance.
Dennis
Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
Fax: 1-866-PLessThan (1-866-753-7784)
www.PLessThan.com
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