From Andreas.Weingessel@ci.tuwien.ac.at  Wed Jan  7 18:43:05 1998
From: Andreas.Weingessel@ci.tuwien.ac.at (Andreas Weingessel)
Date: Wed, 7 Jan 1998 19:43:05 +0100
Subject: R/S Difference - split
Message-ID: <199801071843.TAA14847@elendil.ci.tuwien.ac.at>


In S it is possible to "split" a matrix into its rows, using
split(matrix, 1:number_of_rows). This is not possible in R.

Example:

R:
R> split(matrix(rnorm(1:20),4, 5), 1:4)
Error in split(x, as.factor(f)) : argument lengths differ


S:
> split(matrix(rnorm(1:20),4, 5), 1:4)
$"1":
[1] -0.1804794  0.5269439  0.6248224 -0.3243427 -1.2987407

$"2":
[1]  0.9384254 -1.7596400  1.1210493 -0.2711708  0.7039623

$"3":
[1] -0.02645670  0.81864215  0.58816596 -0.42465974 -0.02682458

$"4":
[1] -0.5523629 -0.7176803  0.3159648  0.7787409  1.6325061



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*                          Andreas Weingessel                          *
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R/S Difference - split
Andreas Weingessel