A nice way to obtain summary for data is to use summary.formula in Hmisc package.
Justin BEM BP 1917 Yaoundé Tél (237) 76043774 ________________________________ De : Jim Lemon <j...@bitwrit.com.au> À : effeesse <scarpin...@gmail.com> Cc : r-help@r-project.org Envoyé le : Lun 13 décembre 2010, 11h 23min 15s Objet : Re: [R] descriptive statistics On 12/13/2010 09:04 PM, effeesse wrote: > > Hi. In a data set I have a variable that takes values from 1 to 14. For each > subgroup of values of this variable, I would like to obtain some descriptive > statistics of other variables present in the data set. I've been trying with > a "for" loop but I couldn't get nothing. Could you please suggest me some > lines? Hi effeesse, Sure: testmat<-data.frame(sample(1:14,50,TRUE),rnorm(50),runif(50)) by(testmat[,-1],testmat[,1],mean) Jim ______________________________________________ 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. [[alternative HTML version deleted]]
______________________________________________ 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.
