[R] Odp: Letters(V1, V2..) as row col indices instead of numbers

[KumaraGuru]

I want to melt the cor matrix and form a 3 col matrix with row# col# and cor. 

This I m using to draw a graph. 

Regards,
Kumaraguru


On Jan 28, 2011, at 6:47 AM, Petr PIKAL <petr.pikal at precheza.cz> wrote:

> Hi
> 
> r-help-bounces at r-project.org napsal dne 28.01.2011 09:52:05:
> 
>> 
>> What makes matrix to print V1, V2 as the row and col indices instead of
>> numbers??
>> 
>> cdata = read.table("ramesh.txt") #cdata is read from a file.
>> c1 = cor(cdata) 
>> 
>> I am printing c1 below. I need only numbers. I dont need V1, V2...what
>> should I do in this case??
>> http://r.789695.n4.nabble.com/file/n3243980/ramesh.txt ramesh.txt 
>> 
>>           V1        V2        V3        V4        V5        V6 V7
>> V1  1.0000000 0.9471591 0.9191233 0.9403129 0.9689690 0.9621362 
> 0.9529811
>> V2  0.9471591 1.0000000 0.8888108 0.9108174 0.9703906 0.9425248 
> 0.9294308
>> V3  0.9191233 0.8888108 1.0000000 0.8788107 0.9077245 0.9078971 
> 0.8965331
>> V4  0.9403129 0.9108174 0.8788107 1.0000000 0.9477058 0.9017977 
> 0.8646251
>> V5  0.9689690 0.9703906 0.9077245 0.9477058 1.0000000 0.9531459 
> 0.9162016
>> V6  0.9621362 0.9425248 0.9078971 0.9017977 0.9531459 1.0000000 
> 0.9447130
>> V7  0.9529811 0.9294308 0.8965331 0.8646251 0.9162016 0.9447130 
> 1.0000000
>> V8  0.9167526 0.9395067 0.8491496 0.8942693 0.9460702 0.9304229 
> 0.8505287
>> V9  0.9512951 0.9598302 0.8666839 0.9465725 0.9645178 0.9486105 
> 0.8979753
>> V10 0.9551633 0.9040160 0.9180022 0.9429816 0.9448644 0.9220875 
> 0.9075537
> 
> Vn are names of columns which R gave to your matrix when you read it as a 
> data frame. And cor just makes a matrix of pairwise corelation 
> coefficients from this data frame conveniently named from this data frame. 
> If you do not want those names just unname it.
> 
> c1 = unname(cor(cdata))
> 
> But I wonder why you dislike those names which are,  well, just names.
> 
> Regards
> Petr
> 
> 
>> 
>> -- 
>> View this message in context: 
> http://r.789695.n4.nabble.com/Letters-V1-V2-as-
>> row-col-indices-instead-of-numbers-tp3243980p3243980.html
>> Sent from the R help mailing list archive at Nabble.com.
>> 
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide 
> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>