[R] reshaping data?

Jim Lemon bitwrit at ozemail.com.au
Fri Sep 30 10:58:16 CEST 2005


Karin Lagesen wrote:
> I have a file like this:
> 
> 
> a       0.1
> a       0.2
> a       0.9
> b       0.5
> b       0.9
> b       0.7
> c       0.6
> c       0.99
> c       0.88
> 
> Which I would like to get to be the following matrix:
> 
>       0.1     0.2    0.3    0.4  ...  
> a     1        2     0       0 
> b     0        0     0       0 
> ..
> 
If you have a file named KL.dat with the above data in it:

KL.df<-read.table("KL.dat",header=FALSE)
KL.mat<-as.matrix(table(KL.df))

Jim




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