try split(), e.g.,
dat <- data.frame(x = rnorm(12), y = runif(12),
z = rep(1:4, 3))
dat
split(dat[1:2], dat$z)
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/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
http://www.student.kuleuven.be/~m0390867/dimitris.htm
----- Original Message -----
From: "Knut Krueger" <[EMAIL PROTECTED]>
To: "'R R-help'" <[EMAIL PROTECTED]>
Sent: Tuesday, February 26, 2008 11:22 AM
Subject: [R] Split data.frames depeding values of a column
> Hello to all
> is there a function wich splits a data.frame
> (column1,column2,column3,....)
>
> into
> data1 <-(column1,column3....) #column2 = 1
> data2 <-(column1,column3....) #column2 = 2
> data3 <-(column1,column3....) #column2 = 3
> ...
> Regards Knut
>
> ______________________________________________
> R-help@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.
>
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