Not clear what you mean by summary (var1, var2)
? That is not a legal way to call summary. Perhaps mt <- mtcars[,c("cyl","hp")] mt$cyl <- factor( mt$cyl ) mtl <- split(mt[,"hp",drop=FALSE], mt$cyl) lapply(mtl,summary) On December 23, 2019 6:56:35 AM PST, Medic <mailipadp...@gmail.com> wrote: >I have >mydata$var > >and I have >mydata$group #two group > >I would like to split >mydata$var >by >mydata$group #to get var1 and var2 > >And then get >summary (var1, var2) #this is my finite aim > >How to encode it all? > >______________________________________________ >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >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. -- Sent from my phone. Please excuse my brevity. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.