Hi, fellow R users,
I've been asked to make a plot with two datasets each with a different x axis,
and it's been suggested one be at the top and the other at the bottom of the
graph. I normally use ggplot2, and I know how to plot multiple datasets by
simply + a new geom with a different data option, but usually in these case my
different datasets have had the same x and y axes. Can I add a new x axis to
the top of the plot in ggplot2 or one of the other graphics packages?
Thanks,
Ben W.
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