[R] naive question about using an object as the name of another object

Duncan Murdoch murdoch at stats.uwo.ca
Fri May 18 12:49:28 CEST 2007

On 17/05/2007 10:11 PM, Andrew Yee wrote:
> This is a dumb question, but I'm having trouble finding the answer to this.
> I'd like to do the following:
> x<-"asdf"
> and then have
> the object x.y become automatically converted/represented as asdf.y (sort of
> akin to macro variables in SAS where you would do:
> %let x=asdf and do &x..y)
> What is the syntax for having x represented as "asdf" in x.y ?

You can use assign( gsub("x", x, "x.y"), x.y ), but this is not a normal 
thing to do in R programs:  R is not SAS. You should investigate using a 
list and setting a member of it, e.g.

asdf$y <- value


f <- function(value) list(y=value)
asdf <- f(value)

depending on what you are trying to do.

Duncan Murdoch

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