[R] how to force R to evaluate variable?

[William Dunlap]

> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of YUPU LIANG
> Sent: Tuesday, September 22, 2009 11:24 AM
> To: r-help at r-project.org
> Subject: [R] how to force R to evaluate variable?
> 
> Hi,
> 
> I want to construct a list as
> 
> Lst <- list(name_1=object_1, ..., name_m=object_m)
> 
> If name_1 is a variable with value "NAME1", how can I ask R to use  
> "NAME1" instead of 'name_1' as the name of the list element?

One way is to add the elements one by one using [[<-.  E.g.,
   Lst <- list()
   Lst[[name_1]] <- object_1
   Lst[[name_2]] <- object_2
   ...

You can also do
   Lst <- list(object_1, object_2, ...)
   names(Lst) <- c(name_1, name_2, ...)

Bill Dunlap
TIBCO Software Inc - Spotfire Division
wdunlap tibco.com  

> Thanks!
> Yupu
> 	[[alternative HTML version deleted]]
> 
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