On Tue, Oct 9, 2012 at 12:25 PM, Bert Gunter <gunter.ber...@gene.com> wrote:
> > The only wrinkle here (with either rbind or simplify2array) is getting > the labels correct if the design is not fully crossed -- i.e. if some > groups are missing so that expand.grid() won't work. Then you might > have to work harder to extract the information from by.list. > Agreed. In such a case I might decide to let aggregate(breaks~wool+tension, subset(warpbreaks, wool != 'A' | tension != 'H' ), summary) sort through the headache for me, and overlook the annoying "result is actually a matrix put in as a single variable in the data.frame". Personal preference maybe but that never made sense to me in the data frame construct (even if it is just a list). Cheers > > str(by.list) > > might help here. > > -- Bert > > On Tue, Oct 9, 2012 at 11:14 AM, ilai <ke...@math.montana.edu> wrote: > > On Tue, Oct 9, 2012 at 11:42 AM, Rui Barradas <ruipbarra...@sapo.pt> > wrote: > > > >> Hello, > >> > >> Try > >> > >> do.call(data.frame, by.list) > >> > >> > > I don't think data.frame inside do.call works in this context. May need > it > > on the outside to do the job (Only OK here since there is no mixture of > > numeric and character/factors in this summary). Something like > > > > by.list <- by(warpbreaks[, 1], warpbreaks[, -1], summary) > > by.dtfrm <- data.frame( do.call( rbind, by.list ) ) > > by.dtfrm <- cbind( do.call( expand.grid, attr( by.list, 'dimnames' ) ), > > by.dtfrm ) > > > > > > > > > > Hope this helps, > >> > >> Rui Barradas > >> Em 09-10-2012 17:53, Jesus Frias escreveu: > >> > Dear R-helpers, > >> > > >> > > >> > > >> > I've got a summary of results from a by() call that I am making with a > >> list > >> > of more than two of factors not very different from the example in the > >> by() > >> > help page > >> > > >> > > >> > > >> > require(stats) > >> > > >> > by(warpbreaks[, 1], warpbreaks[, -1], summary) > >> > > >> > > >> > > >> > The result of the command gives a list of the form > >> > > >> > > >> > > >> > wool: A > >> > tension: L > >> > Min. 1st Qu. Median Mean 3rd Qu. Max. > >> > 25.00 26.00 51.00 44.56 54.00 70.00 > >> > --------------------------------------------------- > >> > wool: B > >> > tension: L > >> > Min. 1st Qu. Median Mean 3rd Qu. Max. > >> > 14.00 20.00 29.00 28.22 31.00 44.00 > >> > --------------------------------------------------- > >> > > >> > .... And so on. > >> > > >> > > >> > > >> > > >> > > >> > I would like to convert this result in to a flat data.frame with > variable > >> > names: > >> > > >> > > >> > > >> > Wool, Tension, Min, 1stQ, Median, Mean, 3rdQ, Max > >> > > >> > A, L , 25.00 26.00 51.00 44.56 54.00 70.00 > >> > B, L, 14.00 20.00 29.00 28.22 31.00 44.00 > >> > > >> > .... > >> > > >> > > >> > > >> > > >> > > >> > Although I've tried the argument "simplify=T" I haven't been able to > get > >> > this converted. > >> > > >> > > >> > > >> > Is there a simple way to achieve this? > >> > > >> > > >> > > >> > Thanks in advance! > >> > > >> > > >> > > >> > Regards, > >> > > >> > > >> > > >> > Jesus > >> > > >> > > >> > > >> > Jesús María Frías Celayeta, PhD > >> > > >> > Ceann Cúntóir, Scoil Eolaíocht an Bhia agus Sláinte an Chomhshaoil > >> > > >> > Assistant Head, School of Food Science and Environmental Health, > >> > > >> > Coláiste Eolaíochtaí agus Sláinte/ College of Sciences and Health, > >> > > >> > Institiúid Teicneolaíochta Átha Cliath/ Dublin Institute of > Technology, > >> > > >> > Sráid Chathal Brugha, Baile Átha Cliath 1, Éire/Cathal Brugha Street, > >> Dublin > >> > 1, Ireland > >> > > >> > F: +353-1-4024459 > >> > > >> > E: <mailto:james.cur...@dit.ie> jesus.fr...@dit.ie > >> > > >> > W: http://fseh.dit.ie/o4/StaffListing/JesusFrias.html > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > Tá an teachtaireacht seo scanta ó thaobh ábhar agus víreas ag Seirbhís > >> Scanta Ríomhphost de chuid Seirbhísí Faisnéise, ITBÁC agus meastar í a > >> bheith slán. http://www.dit.ie > >> > > >> > This message has been scanned for content and viruses by the DIT > >> Information Services E-Mail Scanning Service, and is believed to be > clean. > >> http://www.dit.ie > >> > > >> > > >> > [[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. > >> > >> > >> [[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. > >> > >> > > > > [[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. > > > > > > -- > > Bert Gunter > Genentech Nonclinical Biostatistics > > Internal Contact Info: > Phone: 467-7374 > Website: > > http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm > [[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.
