[R] Graphics?

Yves Gauvreau cyg at sympatico.ca
Wed Nov 8 13:46:39 CET 2000


Say I've setup a plot using layout which produce 2 rows x 1 column and I'm
using the same x values for both subplots.

Say for illustration that the top part is:

    plot(1:10, c(1,2,3,4,5,4,3,2,1,0), type="l")

and for the bottom I have:

    plot(1:10, c(5,4,3,2,1,2,3,4,5,6), type="l")

Now after the output of whatever function I use to draw this is done. What
I'd like to know is, is it possible to draw a line from (5, 1) on the bottom
part to (5,5) on the top part?

Assuming it's not possible, then could I at least do the line in 2 steps, I
mean draw from (5,1) to the top of the bottom part and from (5,5) to the
bottom of the top part. In other words can I add items such as lines or
points to a multi section drawing as we can on a single section drawing?

Thanks in advance.

Yves Gauvreau

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