Kare Edvardsen wrote: > Hi all! > > I've got a datstructure like this: > > subject week value > > 1 1 4 > 2 1 8 > 3 1 3 > 4 1 5 > > 1 2 5 > 2 2 6 > 3 2 2 > 4 2 6 > > 1 3 3 > 2 3 7 > 3 3 3 > 4 3 7 > > I'd like to plot the mean of 'value' against week. Is there a direct way > of doing this or do I have to make a new structure with the calculated > values and then plot it?
For your data.frame X, you want, e.g.: A <- aggregate(X, list(X$week), mean) plot(A$week, A$value) Uwe Ligges > All the best! > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
