[R] Plotting expressions with indicies

[Noel Yvonnick]

Hello,

I would like to plot a series of math symbols on a graph with ordered indicies 
: expression(delta[1]) expression(delta[2]) etc.

Is there a mean to write this in a for loop ?

for(i in 1:6) text(i,i,expression(delta[i]))

does not work ('i' is not evaluated).

Thanks in advance,

Y. Noel