[R] aggregate data.frame using column-specific functions

Dear Colleagues, does anybody know how to aggregate a data.frame using different functions for different columns? Sincerely ___ Markus Preisetanz Consultant Client Vela GmbH Albert-Roßhaupter-Str. 32 81369 München fon: +49 (0) 89 742 17-113 fax:

Re: [R] aggregate data.frame using column-specific functions

you can use mapply()... z <- as.data.frame(matrix(1:3,3,3,T)) mapply(function(x,y) x(y), c(sum,prod,sum), z) Markus Preisetanz a écrit : >Dear Colleagues, > > > >does anybody know how to aggregate a data.frame using different functions for >different columns? > > > >Sincerely > > > >__

Re: [R] aggregate data.frame using column-specific functions

Hi have you tried >?aggregate eg > df1<-aggregate(mydata, list(mean1=x1,mean2=x2),mean) - [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://st