[R] Stacked plots with common x-axis and different y-axis

Jason Rupert jasonkrupert at yahoo.com
Tue Aug 4 23:33:01 CEST 2009

Is there a place that shows how to create two plots that are stacked on top of each other where they share a common x-axis scale, but have differnt y-axis scale?

Say have the following data: airquality
Stack plot(airquality$Day, airquality$Wind) on top of  plot(airquality$Day, airquality$Temp). 

I am interested in stacking the two on top of each other with no seam, or plotting the two lines with two different y-axis scales on the same plot.  

Thanks for any feedback and insights.

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