[R] convering upper triangular matrix into vector

[Dimitris Rizopoulos]

look at: '?upper.tri()'

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://www.med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: <e.rapsomaniki at mail.cryst.bbk.ac.uk>
To: <R-help at stat.math.ethz.ch>
Sent: Sunday, October 02, 2005 11:04 AM
Subject: [R] convering upper triangular matrix into vector


> Hi
>
> I have two symmetrical distance matrices and want to compute the 
> correlation
> coefficient between them (after turning them into vectors).
>
> Is there a way of selecting only the upper triangular part of each 
> matrix, then
> convert this into a vector so I can compute the correlation?
>
> Many Thanks
> Eleni Rapsomaniki
>
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