[R-sig-eco] How to convert matrix to paired list?

[Peter Solymos]

Dear Jin-Long,

You can try this:

x <- cbind(rnorm(10), rnorm(10), rnorm(10), rnorm(10))
y <- cor(x)
y
library(mefa)
z <- as.data.frame(as.dist(y))
z

Yours,

Peter

Peter Solymos, PhD
Postdoctoral Fellow
Department of Mathematical and Statistical Sciences
University of Alberta
Edmonton, Alberta, T6G 2G1
Canada
email <- paste("solymos", "ualberta.ca", sep = "@")



On Thu, Jul 23, 2009 at 4:49 PM, Zhang Jinlong<zhangjl at ibcas.ac.cn> wrote:
> Dear lists
>  Suppose I have an correlation matrix of four places named "A","B","C"and"D", as below:
>    A     B      C    D
> A   0    0.5   0.2   0.8
> B  0.5   0     0.6   0.4
> C  0.2   0.6   0      0.4
> D  0.8   0.4   0.4    0
> Is there a function that allows me to generate the paired list like this?
> A B 0.5
> A C 0.2
> A D 0.8
> B C 0.6
> B D 0.4
> C D 0.4
> Could you help me if you know a method. Any suggestions will be appreciated.
> Thanks
> Jinlong
>
>
> Jin-Long ZHANG
> Ph.D. Candidate
> Institute of Botany
> Chinese Academy of Sciences
> Beijing 100093
> E-mail: zhangjl at ibcas.ac.cn
>
>
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