-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Roman
Akhter Ahmed
Sent: Monday, December 18, 2006 8:42 PM
To: r-help at stat.math.ethz.ch
Subject: [R] unique columns of a matrix
Dear all,
I have a matrix of repeating columns in R, for example a matrix X is
[,1] [,2] [,3] [,4]
[1,] 1 1 1 1
[2,] 1 1 2 2
I want to store unique columns of the matrix X in a new matrix Y.
Therefore, Y will be
[,1] [,2]
[1,] 1 1
[2,] 1 2
It will be really appreciated if you can provide me some
function for this job.
Thanks for your time and effort in advance, Roman
--
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Roman Akhter Ahmed (Ph.D. Candidate)
Department of Econometrics and Business Statistics Room 659,
Building 11 (East Wing), Clayton Campus Monash University,
Victoria 3800, Australia
Ph.: +61 3 9905 8346 (W), +61 3 9543 1958 (R)
Web: http://www.buseco.monash.edu.au/staff/profile.php?uid=rahmed
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