[R] Combining 4th column from 30 files

[Henrique Dallazuanna]

Maybe:

sapply(lapply(dir(pattern="data"), read.table), '[[', 4)

On Wed, Jul 23, 2008 at 5:21 AM, Daren Tan <daren76 at hotmail.com> wrote:
>
> Better approach than this brute force ?
>
> mm <- NULL
> for (i in dir(pattern="data")) { m <- readTable(i); mm <- cbind(mm, m[,4]) }
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O