[R] How to generate a figure using par( ) with some densityplot( )'s

[Sundar Dorai-Raj]

Amir Safari wrote:
>  
>   Hi Dear R users,
>   For a pair plotting, usaully we use par( ) function. Apparently it does not work anywhere. I want to have 3 plots in a single figure, like this:
>   par(mfrow=c(3,1))
>   densityplot( a) 
>   densityplot(b)
>   densityplot(c)
>   But it does not work. How is it possible to have such a figure with densityplot( ) in a single figure?
>   So many thanks for any help.
>   Amir Safari
>    
> 
>  		

Assuming you are talking about densityplot in lattice, then you are 
missing the point of lattice. You should try:

library(lattice)
set.seed(1)
a <- rnorm(100)
b <- rnorm(50)
c <- rnorm(75)
densityplot(~a + b + c, outer = TRUE, layout = c(3, 1))

Set "outer" to FALSE to overlay the densities (this is the default 
behavior). You should remove the "layout" argument in that case, though.

HTH,

--sundar