Hello,

Please check function which().

> > m <- matrix(1:12,3,4) > which(m==5, arr.ind=T)     row col
[1,]   2   2> which(m==9, arr.ind=T)     row col
[1,]   3   3

>

Regards,
Carlos Ortega
www.qualityexcellence.es


2012/1/27 chuck.01 <CharlieTheBrown77@gmail.com>

> Please use dput() to post your example matrix.
>
>
>
>
> Rambler1 wrote
> >
> > I have run into a problem in my code. What I want to accomplish is this:
> > I have a user input stock symbols into a list and from there I run the
> > quantmod package to get historical data. I compute the correlation matrix
> > and then turn that matrix into a simple matrix with 1's or 0's depending
> > on how strong the correlation is. From here I would like to go into the
> > matrix and take all the 1's and match them with their row/column titles.
> > So for each 1 I have two stock symblos. For example:
> >               MMM ACE ABT ANF HD PEP K GOOG BIDU JNJ
> > MMM      0        1       0       0     0     1      0       0         0
> > 0
> > ACE          1        0       0       0     0     0      0       0
> > 0      1
> > ABT          0        0       0       0     0     1      0       0
> > 0      1
> > ANF         0        0       0       0     0     0      0        0
> > 0      0
> > HD           0        0       0       0     0     0      0        0
> > 0      0
> > PEP          1        0      1       0      0     0      0        0
> > 0      1
> > K               0        0      0       0      0     0      0       0
> > 0      0
> > GOOG     0        0      0       0      0     0      0       0          0
> > 0
> > BIDU        0        0      0       0      0     0      0       0
> > 0      0
> > JNJ             0       1      1      0       0     1       0       0
> > 0      0
> >
> > Say I have this matrix computed. I would like to locate every 1 and the
> > corresponding two names that go with it. (eg MMM/ACE, MMM/PEP and so on.)
> > Thank you for your help!
> >
>
>
> --
> View this message in context:
> http://r.789695.n4.nabble.com/Grabbing-Column-and-Row-titles-tp4332136p4333698.html
> Sent from the R help mailing list archive at Nabble.com.
>
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>

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