> Nice, but I need a few columns for the data. Don't know how to do this with > the method you suggest.
For each iteration, you make a vector of your 'data', in the example it is a vector of length 3. Each of the elements in this vector will become a column in the dataframe. If that is not what you mean, can you give a specific example? remko > -N > > On 8/4/09 4:57 PM, Remko Duursma wrote: >> >> Hi Noah, >> >> there are a few ways to do this. Easiest is to keep adding an element >> to a list, and then make it into a dataframe at the end, like this: >> >> resultlis<- list() >> for(i in 1:10){ >> >> # your calculations here >> datavec<- runif(3) >> >> resultlis[[i]]<- datavec >> >> } >> resultdfr<- as.data.frame(do.call("rbind", resultlis)) >> >> >> greetings, >> Remko >> >> ------------------------------------------------- >> Remko Duursma >> Post-Doctoral Fellow >> >> Centre for Plants and the Environment >> University of Western Sydney >> Hawkesbury Campus >> Richmond NSW 2753 >> >> Dept of Biological Science >> Macquarie University >> North Ryde NSW 2109 >> Australia >> >> Mobile: +61 (0)422 096908 >> www.remkoduursma.com >> >> >> >> On Wed, Aug 5, 2009 at 9:41 AM, Noah Silverman<n...@smartmediacorp.com> >> wrote: >> >>> >>> Hi, >>> >>> Time for another of my "newbie" questions. >>> >>> Is it possible to build up a data.frame "row by row" as I go >>> >>> I'm going to be running a bunch of experiments (many in a loop) to test >>> different things. I'm using AUC as my main performance measure. >>> >>> My thought was to add a row to a data.frame for each iteration and then >>> have >>> a nice summary report at the end. >>> >>> I found how to import, export, and create from vectors. I haven't been >>> able >>> to find how just make an empty one and add rows as I go. >>> >>> ______________________________________________ >>> 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. >>> >>> > ______________________________________________ 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.