[R] Error: too many open devices

[Kate Walton]

Hi,

R reported the following error and stopped running my code:

Error in win.graph(width = 8.5, height = 11) :
        too many open devices

My code calls for R to produce more than 100 plots, but it stops running after
about 60 and gives me the error message copied above. I'm sure there's an easy
solution. Anyone know?

Many thanks in advance, Kate