[R] more classes to one class in one dataset

[Dimitris Rizopoulos]

try this:

split(dat, dat$class)

where 'dat' is your data.frame


I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/16/336899
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat/
     http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Jan Sabee" <jan.sabee at gmail.com>
To: <R-help at stat.math.ethz.ch>
Sent: Wednesday, March 23, 2005 11:17 AM
Subject: [R] more classes to one class in one dataset


>I have a big database which more classes in class variable. I want to
> make each class to one dataset, for example:
> x1 x2 x3 x4  class
> a  b  a  c  c    M1
> c  b  b  c  c    M4
> c  c  a  c  c    M2
> c  a  c  a  a    M2
> c  c  a  a  a    M1
> c  a  b  c  a    M3
> c  c  a  b  c    M3
> c  a  c  a  b    M2
> c  c  a  b  a    M1
>
> How can I make, like:
>
> x1 x2 x3 x4  class
> a  b  a  c  c    M1
> c  c  a  a  a    M1
> c  c  a  b  a    M1
>
> x1 x2 x3 x4  class
> c  c  a  c  c    M2
> c  a  c  a  a    M2
> c  a  c  a  b    M2
>
> x1 x2 x3 x4  class
> c  a  b  c  a    M3
> c  c  a  b  c    M3
>
> x1 x2 x3 x4  class
> c  b  b  c  c    M4
>
> Thanks for your help.
> Jan Sabee
>
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