Try this: do.call(rbind, lapply(lapply(l, unlist), "[", unique(unlist(c(sapply(l, names))))))
On Mon, Dec 29, 2008 at 7:35 PM, Mark Heckmann <mark.heckm...@gmx.de> wrote: > thanks for the elegant solution! > > It worked out fine in my case, but when I tried to understand what it does > I discovered one little issue. > > l <- list(data.frame(a=1, b=2), data.frame(a=2, c=3)) > do.call(rbind, lapply(l, "[", unique(unlist(sapply(l, names))))) > > will not work. Neither the following list. > > l <- list(data.frame(a=1, b=2), data.frame(a=2, c=3, d=5)) > > I am not able to figure out why. Does anyone know what could be done to fix > it? > > TIA, Mark > > > -------- Original-Nachricht -------- > > Datum: Mon, 29 Dec 2008 16:17:22 -0200 > > Von: "Henrique Dallazuanna" <www...@gmail.com> > > An: "Mark Heckmann" <mark.heckm...@gmx.de> > > CC: r-help@r-project.org > > Betreff: Re: [R] Merge or combine data frames with missing columns > > > Try this: > > > > do.call(rbind, lapply(l, "[", unique(unlist(sapply(l, names))))) > > > > Where "l" is your list. > > > > On Mon, Dec 29, 2008 at 12:18 PM, Mark Heckmann > > <mark.heckm...@gmx.de>wrote: > > > > > > > > Hi R-experts, > > > > > > suppose I have a list with containing data frame elements: > > > > > > [[1]] > > > (Intercept) y1 y2 y3 y4 > > > -6.64 0.761 0.383 0.775 0.163 > > > > > > [[2]] > > > (Intercept) y2 y3 > > > -3.858 0.854 0.834 > > > > > > Now I want to put them into ONE dataframe like this: > > > (Intercept) y1 y2 y3 > > y4 > > > 1 -6.64 0.761 0.383 0.775 0.163 > > > 2 -3.858 NA 0.854 0.834 NA > > > > > > The problem I encounter is that not always all possible columns > > (Intercept, > > > y1, y2, y3, y4) exist or at least have NA entries . > > > > > > I cannot figure out how (e.g. with merge)... > > > > > > TIA, Mark > > > > > > > > > -- > > > Mark Heckmann (Dipl. Wirt.-Ing.) > > > phone +49 (0) 421/1614618 > > > > > > Sensationsangebot verlängert: GMX FreeDSL - Telefonanschluss + DSL > > > für nur 16,37 Euro/mtl.!* http://dsl.gmx.de/?ac=OM.AD.PD003K1308T4569a > > > > > > ______________________________________________ > > > 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. > > > > > > > > > > > -- > > Henrique Dallazuanna > > Curitiba-Paraná-Brasil > > 25° 25' 40" S 49° 16' 22" O > > -- > Mark Heckmann (Dipl. Wirt.-Ing.) > phone +49 (0) 421/1614618 > > Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kann`s mit allen: > http://www.gmx.net/de/go/multimessenger > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[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.
