[R] Combining 4th column from 30 files

From: Daren Tan <daren76_at_hotmail.com>
Date: Wed, 23 Jul 2008 08:21:44 +0000

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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