Message-ID: <4365C237.7050201@statistik.uni-dortmund.de>
Date: 2005-10-31T07:05:27Z
From: Uwe Ligges
Subject: Matrix operations please help
In-Reply-To: <20051031065639.74833.qmail@web31608.mail.mud.yahoo.com>
See ?reshape
Uwe Ligges
Srinivas Iyyer wrote:
> Dear Group,
>
> I have a matrix (157 X 157 ) with correlation values.
> I want to convert the unique elements into a long list
> so that I can add an extra variable and plot them.
>
> Example:
>
> A B C D
>
> alfa 1 0.3 0.8 -0.3
>
> beta 0.2 1 -0.3 0.4
>
> echo 0.9 -0.3 1 0.5
>
> tang -0.5 0.5 0.4 1
>
>
> I want to convert into this form:
>
>
> alfa A 1
> alfa B 0.3
> alfa C 0.8
> alfa D -0.3
> beta A 0.2
> beta B 1
> beta C -0.3
> beta D 0.4
> .......
>
> and so on.
>
>
> I will add another variable afterwards:
> var1 var2 corr var3
> alfa A 1 grp1
> alfa B 0.3 grp1
> alfa C 0.8 grp2
> alfa D -0.3 grp3
> beta A 0.2 grp3
> beta B 1 grp2
> beta C -0.3 grp1
> beta D 0.4 grp2
> ........ and so on....
>
>
> I am sure there should be a way.. but I am completely
> clueless..
> Can any one help me please.
>
> thanks
> srini
>
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