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