[R] Plotting three time series on the same graph

[Gabor Grothendieck]

In the zoo package there is an example of a graph with an axis on
the left and on the right in the examples section of ?plot.zoo.  Run
that with but use ylab = "" on the plot call to make room for the third axis.

To add a third axis supposing 1 - 15 is the range of our third time series:

usr <- par("usr")
opar <- par(usr = c(usr[1:2], c(1, 15)))
axis(2, pos = usr[1] - diff(usr[1:2])/12, col = "green")
par(opar)

On Mon, Jun 30, 2008 at 5:11 AM,  <tolga.i.uzuner at jpmorgan.com> wrote:
> Dear R Users,
>
> I would like to plot three time series on the same graph, two axis on the
> left and one axis on the right.
>
> The time series that I am graphing on the left do not share a similar
> scale: one has a range of 1:100 and the other a range of 25000:70000. How
> can I display the tick marks for both on the left hand side without
> superimposing them, i.e. one set of tick marks in black right up on the
> edge of the plot and another set of tick marks in red placed further to
> the left so that the tick marks and axis identifiers do not sit on top of
> each other ?
>
> Many thanks in advance,
> Tolga
>
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