On Aug 23, 2009, at 2:53 PM, Bogaso wrote:
No no, I actually want following result :
7, 14, 21, 6, 13, 20, 5, 12, 19,............
Ooops. That is what I thought you wanted, but I didn't check very
carefully, did I?
c(apply(mat[7:1,],1,I) )
# the I() function just returns "itself" and gets supplied a row at a
time.
[1] 7 14 21 6 13 20 5 12 19 4 11 18 3 10 17 2 9 16 1 8 15
>
David Winsemius wrote:
On Aug 23, 2009, at 2:37 PM, Bogaso wrote:
I have suppose a matrix like that
mat <- matrix(1:21, 7)
mat
[,1] [,2] [,3]
[1,] 1 8 15
[2,] 2 9 16
[3,] 3 10 17
[4,] 4 11 18
[5,] 5 12 19
[6,] 6 13 20
[7,] 7 14 21
From this matrix, I want to create a vector like tha :
c(mat[7,], mat[6,], mat[5,], ....., mat[1,])
Can anyone please guide me, how to do that?
c( mat[7:1,] )
# [1] 7 6 5 4 3 2 1 14 13 12 11 10 9 8 21 20 19 18 17 16 15
--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
