I believe you missed ?tapply which does what you want I think (in the absence of a reproducible example one cannot be sure).
Cheers, Bert Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 "Data is not information. Information is not knowledge. And knowledge is certainly not wisdom." H. Gilbert Welch On Sun, Dec 22, 2013 at 3:54 PM, Onur Uncu <onuru...@gmail.com> wrote: > R Users, > > I have a data frame which I split using 2 factors using the split function: > > split(datframe, list(f=factor1, f2=factor2)); > > I then used lapply to get some summary statistics grouped by factor1 and > factor2. > > I now want to change the appearance of this output. I want to get a 2 > dimensional table where columns represent values of factor1, rows represent > values of factor2 and the entries on the table represent the summary > results that were calculated by lapply. > > I tried as.table() function but did not help. It seems the problem is that > R combined factor1 and factor 2 into one factor when I used list(f=factor1, > f2=factor2) in the split function. So R is now unable to treat them as 2 > different factors in order to put them on row and columns of a table... Any > ideas how I can achieve the desired table? > > Thanks for your help. > > [[alternative HTML version deleted]] > > ______________________________________________ > 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.
