thank you, I downloaded and installed the package. With library(help="doBy") I got the information about this package.
But when I use the syntax summaryBy(daten[,c(3:4)], list(A,B), Fun=c(var,mean)) I got the following error: <<Fehler: konnte Funktion "summaryBy" nicht finden>> (error: couldn't find function summaryBy) I tried before require(doBy), but this doesn't work neither. What can I do? ----- Original Message ----- From: "Gabor Grothendieck" <[EMAIL PROTECTED]> To: "Agrarimmobilien" <[EMAIL PROTECTED]> Cc: <r-help@r-project.org> Sent: Monday, December 24, 2007 10:48 PM Subject: Re: [R] aggregation with two statistical functions - mean and variance > See summaryBy in the doBy package. > > On Dec 24, 2007 4:27 PM, Agrarimmobilien > <[EMAIL PROTECTED]> wrote: >> Hello, >> >> using the syntax >> >> aggregate(daten[,c(3,4)], list(A,B), mean) >> >> I'm getting the following data.frame: >> >> >> A B C D >> 1 35 1 6.16000 5 >> 2 47 1 31.24333 20 >> 3 54 1 26.81773 2 >> 4 3 2 12.99000 7 >> 5 4 2 6.49000 1 >> >> C and D are both means. But now I want to have: C is mean, D is variance. >> >> How can I do this by using/ changing the aggregation syntax? >> >> Thanks! >> >> Macki >> >> ______________________________________________ >> 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. >> > ______________________________________________ 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.
