[R] indexing

[jim holtman]

Is this what you were asking for?

> x <- c('a b', 'c d', 'e f')
> y <- strsplit(x, ' ')
> y
[[1]]
[1] "a" "b"

[[2]]
[1] "c" "d"

[[3]]
[1] "e" "f"

> sapply(y, '[[', 1)
[1] "a" "c" "e"
>
>


On Wed, Mar 26, 2008 at 8:55 PM,  <gbr0wn at comcast.net> wrote:
> Is there an on-line source that explains index vectors?  I used 'strsplit' to generate a lengthy list of pairs of character vectors.  I only want the first of each pair.  Brackets, double brackets, and '$' operator don't work
>        [[alternative HTML version deleted]]
>
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>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?