Uh what do you want to do to it/them? Here are a couple of R-type commands on a data.frame.
mydata <- data.frame(vec1 = seq(19,109, by=10), vec2 =seq(30,120, by=10)) mydata[,1]+mydata[,2] apply(mydata, 2, mean) --- On Thu, 12/31/09, donahc...@me.com <donahc...@me.com> wrote: > From: donahc...@me.com <donahc...@me.com> > Subject: [R] iterating over a data frame the R way? > To: r-help@r-project.org > Received: Thursday, December 31, 2009, 2:44 PM > Hi, > > I have a data frame that was create by issuing a select > against my sqlite database. I want to get each row > from the data frame and use the each of the column > values. The data frame looks like this: > > start_time end_time > 09:30:00 10:00:00 > 10:00:01 10:30:00 > etc > > Can a point me to a tutorial/example of doing this? I > the other programming languages I'm familiar with I would > just loop over the frame and access the elements, but I > believe that's not the R way and can't find examples of > doing this. > > Thanks! > > ______________________________________________ > 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. > __________________________________________________________________ Make your browsing faster, safer, and easier with the new Internet Explorer® 8. Optimized for Yahoo! Get it Now for Free! at http://downloads.yahoo.com/ca/internetexplorer/ ______________________________________________ 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.