[R-SIG-Finance] abline() for zoo plot ?

[Gabor Grothendieck]

Sure. Here are two examples with plot.zoo:

library(zoo)

# single panel
z <- zoo(1:10)
plot(z)
abline(v = 5)

# multipanel
plot(merge(z, lag(z, -1)), panel = function(x, y, ...) {lines(x, y);
abline(v = 5) } )

If you use xyplot.zoo then you can use all the lattice graphics facilities.


On Fri, Feb 22, 2008 at 2:14 PM, Markus Loecher
<markus at insightfromdata.com> wrote:
> Can you somehow use the convenient abline() function in zoo plots ?
> I am mainly looking for an easy way of adding vertical lines at specific
> locations to my zoo plots.
>
> Thanks!
>
> Markus