[R] Superimpose two graphs

[Jim Lemon]

On 11/28/2011 05:46 PM, Vikram Bahure wrote:
> Dear R users,
>
> I want to superimpose two graphs as well as ensure that they should have
> same scale with same x&  y axis.
>
> I am using following command but it does not ensure same scale.
>
> *pdf(file = "../RESULTS/RS1.simulated.pdf", width = 10, height =6)*
> *plot(Reserves.RS, col = 1:2, screen = 1)*
> *par(new= TRUE)*
> *barplot(RS.active, axes = FALSE)*
> *dev.off()*
> *
> *
Hi Vikram,
Try this:

library(plotrix)
ylim<-range(c(Reserves.RS,RS.active))
twoord.plot(ly=RS.active,ry=Reserves.RS,rcol=1,type=c("bar","p"),
lylim=ylim,rylim=ylim)

I'm assuming that you have the same number of values in each vector, if 
not, you may have to specify xlim as well.

Jim