[R] Math Expression and Variable Value in Title

[Roger D. Peng]

Use substitute()

n <- 20
plot(0, 0, main = substitute(paste(n[i], " = ", k), list(k = n)))

-roger

Wolfgang Viechtbauer wrote:

> Hello All,
> 
> I am trying to put a math expression into a plot title and at the same
> time, I want a value in the title to depend on a variable that I set
> earlier.
> 
> Simple Example:
> 
> n <- 20
> plot(0, 0)
> title(expression(paste(n[i], " = ", n)))
> 
> Obviously, I want "n_i = 20". How can I get that?
> 
> Thanks in advance,
>