[R] combine variables to matrix

Peter Dalgaard P.Dalgaard at biostat.ku.dk
Wed Dec 12 16:30:19 CET 2007


Andre Jung wrote:
> I just got stuck with a quite simple question. I've just read in an
> ASCII table from a plain text file with read.table(). It's a 1200x1200
> table. R has assigned variables for each column: V1,V2,V3,V4,...
> For small data sets
>
> data <- read.table("data.txt");
> data.matrix <- cbind(V1,V2,V3);
>
as.matrix(data) ?

(or, if you know the dimensions,

M <- matrix(scan("data.text"), 1200, 1200)

)

> works. But how could I put together 1200 columns?
>
> I've searched the R mailing help and stumbled upon this entry:
> https://stat.ethz.ch/pipermail/r-help/2007-July/137121.html
> which doesn't help me.
>
> thanks for your help.
>
> andre
>
> ------------------------------------------------------------------------
>
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>   


-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)                  FAX: (+45) 35327907



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