I'm not sure why you would wish to do so, but it can be done:
> natural_nums <- 1:10
> even_nums <- seq(2,10, by = 2)
> types <- c("natural_nums", "even_nums")
> types <- lapply(types, as.name) ## list of variable names
> types
[[1]]
natural_nums
[[2]]
even_nums
> eval(types[[1]])
[1] 1 2 3 4 5 6 7 8 9 10
> eval(types[[2]])
[1] 2 4 6 8 10
Bill Venables
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-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Ng Stanley
Sent: Friday, 14 March 2008 1:27 PM
To: r-help
Subject: [R] How to turn a string into a variable name ?
Hi,
For example,
natural_nums <- 1:10
even_nums <- seq(2,10, by = 2)
types <- c("natural_nums", "even_nums")
What functions can be performed on types[1] to turn it into a variable
name
and not a string ?
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