Hi Adam, Possibly subset() or & would be helpful. Or even aggregate(), depending on your ultimate goal.
Without a reproducible example that includes some sample data provided using dput() (fake is fine), the code you used, and some clear idea of what output you expect, it's impossible to figure out how to help you. Here are some suggestions for creating a good reproducible example: http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example Sarah On Fri, Jul 31, 2015 at 2:49 PM, Adam Jauregui <adm...@gmail.com> wrote: > Hello R-help, > > I am trying to compute the mean of a quarterback's career fantasy football > stats, but I wish to exclude his 2014 stats from the mean, as that will be > the test data for the model I am trying to build for my academic undergrad > research. > > The code for figuring out the mean of his Yds for every career Game 1 was > simple: > > > *mean(brady.t$Yds[brady.t$G. == 1])* > How can I make an "if-then" statement though so that his 2014 stats are > excluded? Or is there an easier way besides "if-then?" > > Thank you, > > AKJ > > [[alternative HTML version deleted]] > -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.
