[R] fill an array by rows

David Winsemius dwinsemius at comcast.net
Thu Feb 9 19:03:42 CET 2012


On Feb 9, 2012, at 12:47 PM, Jim Maas wrote:

> I've dug around but not been able to find anything, am probably  
> missing something obvious.
>
> How can I fill a three-dimensional (or higher dimension) array by  
> rows instead of columns.
>
> eg
>
> new1 <- array(c(1:125), c(5,5,5))
>
> works fine for me but fills it by columns and
>
> new2 <- array(c(1:125), c(5,5,5), byrow=TRUE)
>
> throws an error.
>
> Am I missing something obvious?  I also tried transposing the 3-d  
> array but that didn't work either.

You might want to look at aperm:

  Perhaps:
new2 <- aperm(new1, c(2,1,3))


>
-- 

David Winsemius, MD
West Hartford, CT



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