[R] Read vector as multi-dimensional data in R by row
arun
smartpink111 at yahoo.com
Tue Jul 10 07:12:03 CEST 2012
Hi,
Try this:
b1<-aperm(array(a,dim=c(5,2,2)),perm=c(2,1,3))
> b1
, , 1
[,1] [,2] [,3] [,4] [,5]
[1,] 1 2 3 4 5
[2,] 6 7 8 9 10
, , 2
[,1] [,2] [,3] [,4] [,5]
[1,] 11 12 13 14 15
[2,] 16 17 18 19 20
A.K.
----- Original Message -----
From: HJ YAN <yhj204 at googlemail.com>
To: r-help at r-project.org
Cc:
Sent: Monday, July 9, 2012 7:25 PM
Subject: [R] Read vector as multi-dimensional data in R by row
Dear R users
Say I wanted to read a vector into R as multi-dimensional array by row,
e.g.
a<-c(1:20)
> b<-array(a,dim=c(2,5,2))
> b
, , 1
[,1] [,2] [,3] [,4] [,5]
[1,] 1 3 5 7 9
[2,] 2 4 6 8 10
, , 2
[,1] [,2] [,3] [,4] [,5]
[1,] 11 13 15 17 19
[2,] 12 14 16 18 20
But actually I wanted...
[,1] [,2] [,3] [,4] [,5]
[1,] 1 2 3 4 5
[2,] 6 7 8 9 10
, , 2
[,1] [,2] [,3] [,4] [,5]
[1,] 11 12 13 14 15
[2,] 16 17 18 19 20
I checked '?array' but there is not an argument or something like
'byrow=T' as the one in 'matrix'.
Could anyone help please?
Many thanks in advance!
HJ
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