returning multiple values

Hi,

No, you won't be able to simply call "a" and have that work.

R returns these in a single object with components (elements) named a,b,c,d

Here's a concrete example:

func <- function(x, y) return(list(a = x+1, b = y + 2))

out <- func(3, 5)

out[["a"]] # or out$a

out[["b"]] # or out$b

give the desired results.

If you just do

func(3,5)

the value will be returned, but since it's not bound to a variable
name, simply thrown away.

Remember -- R is (almost) always pass-by-value, not by reference, and
has pretty strong scoping.

Best,
Michael

I am running a program which has an output containing four vectors named
meanfevs, meanfevns, pfevs, pfevns. I wish to return all four and be able
to access them later. I used the command
return(list(a=meanfevs,b=meanfevns,c=pfevs,d=pfevns))
it did give me the ouput. However the values did not get stored in the
vectors a,b,c and d and i am not being able to access them later by just
calling a/b/c/d. Please help.

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