[R] Add a vertical line and some values on a plot

varin sacha varinsacha at yahoo.fr
Sun Oct 29 21:09:28 CET 2017

Hi Rui, 

Many thanks for your response.

De : Rui Barradas <ruipbarradas at sapo.pt>

Envoyé le : Dimanche 22 octobre 2017 18h27
Objet : Re: [R] Add a vertical line and some values on a plot


After the plot just do

abline(v = median(A))

As for how to plot points, see, well, ?points().

Hope this helps,

Rui Barradas

Em 22-10-2017 16:33, varin sacha via R-help escreveu:
> Dear R-experts,
> Here below is my code,
> I would like to add a vertical line on my plot, showing the median and I would like to place some values on this graph as well, i.e. 4.3 and -8.4. How can I do ?
> Many thanks for your reply.
> A=c(1,2.3,4,3.5,4.3,2.5,6.3,-0.1,-1.5,3.7,-2.3,-3.5,5.4,3.2, -10.5,-8.4,-9.4)
> d <- density(A)
> plot(d)
> median(A)
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