[R] Stumped with subsetting

[Sundar Dorai-Raj]

Peter Wilkinson wrote:

> This seems like such a trivial thing to do:
> 
> given a data.frame DF and variables w,v, x,y,z I can do
> 
> DF["x"] or DF[c("x","y")]
> 
> if I create a vector, mylist = c("x",y")
> 
> then I do DF[mylist]
> 
> I am not getting x and y, I get something else.
> 
> 
> what is the correct way to subset a data.frame by columns using a 
> vector, as if I were doing DF["x","y"]?
> 
> Peter
> 
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You want DF[, mylist]. DF[mylist] returns a list. You may want to look 
at "An Introduction to R", which covers this topic.

--sundar

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