R devel - Jan 1998 - R/S Difference - split

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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The difference is more fundamental:
   split(1:10,1:2)
   
 yields
 
  $"1":
[1] 1 3 5 7 9

$"2":
[1]  2  4  6  8 10

in Splus and an error in R. R is not recycling the factor. I'll see
about fixing this. Splus says that if group is shorter it should be
replicated to fill things up and if it is longer a warning will be
printed that some of the groups will have length zero. Any reasons
not to be compatible?

robert
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