[R] multiple x-axis labels on plot

t.d. kaplan kaplan at santafe.edu
Tue Dec 12 08:26:00 CET 2006


hi,

how can i set multiple x-axis labels on a plot? in effect, i want
to set 2 x-axis labels and values on the tick marks. is it possible
to have one running on the bottom (as is the default) and another
running across the top of a plot?

like:

xlab-1
---------
|       |
|       |
---------
xlab-0


thanks.




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