[R] putting stuff into bins...

[Dimitris Rizopoulos]

probably a combination of cut() and tapply() could be of help in this 
case, e.g.,

x <- rnorm(100)
tapply(x, cut(x, -4:4), mean)


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: "Federico Calboli" <f.calboli at imperial.ac.uk>
To: "r-help" <r-help at stat.math.ethz.ch>
Sent: Tuesday, September 26, 2006 1:44 PM
Subject: [R] putting stuff into bins...


> Hi All,
>
> I have a vector of data, a vector of bin breakpoints and I want to 
> put my data
> in the bins and then extract fanciful informations like the mean 
> value of each bin.
>
> I know I can write my own function, but I would have thought that R 
> should have
> somewhere a function that took as arguments something like (data, 
> breaks, what
> to do with the data in the bins). I surey could not find it trawling 
> the R-help
> archives though.
>
> If such a function exists I'd be grateful to anyone pointing it out 
> to me.
>
> Cheers,
>
> Fede
>
> -- 
> Federico C. F. Calboli
> Department of Epidemiology and Public Health
> Imperial College, St Mary's Campus
> Norfolk Place, London W2 1PG
>
> Tel  +44 (0)20 7594 1602     Fax (+44) 020 7594 3193
>
> f.calboli [.a.t] imperial.ac.uk
> f.calboli [.a.t] gmail.com
>
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> 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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