R help - Sep 2008 - math-type label

Dear all,
I would like to create a math-type label like this one:

c(expression(theta[1]), expression(theta[2]), ..., expression(theta[N]))

How can I do that in an automatic way (i.e., for any dimension N). I 
tried with a "for" loop, but also need to used substitute I guess. Any
idea?
Thanks a lot,
David

Ardia David wrote:
> Dear all,
> I would like to create a math-type label like this one:
> 
> c(expression(theta[1]), expression(theta[2]), ..., expression(theta[N]))

Example:


plot(1:10, xaxt="n")
here <- 1:10
axis(1, at = here,
     do.call("expression",
         lapply(here, function(j)
             substitute(theta[i], list(i=j)))))


Uwe Ligges

> How can I do that in an automatic way (i.e., for any dimension N). I 
> tried with a "for" loop, but also need to used substitute I
guess. Any
> idea?
> Thanks a lot,
> David
> 
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