I think this is what you want. You need to look at the help file for ?'[' and ?'[['. Also understand the differences between a data.frame and a list. in the case of defining qn you need to use a list and not a data.frame because here is what happens with a data.frame:
> q1 <- data.frame(q=d1, n="a") > str(q1) 'data.frame': 1 obs. of 3 variables: $ q.x: num 1 $ q.y: num 2 $ n : Factor w/ 1 level "a": 1 Which is probably not want you want. So the following should give you the results you want > d1 <- data.frame(x=1, y=2) > d2 <- data.frame(x=1, y=3) > d3 <- data.frame(x=21, y=3) > > > q1 <- list(q=d1, n="a") > q2 <- list(q=d2, n="a") > q3 <- list(q=d3, n="a") > > > v <- list() > v[[1]] <- q1 > v[[2]] <- q2 > v[[3]] <- q3 > str(v) List of 3 $ :List of 2 ..$ q:'data.frame': 1 obs. of 2 variables: .. ..$ x: num 1 .. ..$ y: num 2 ..$ n: chr "a" $ :List of 2 ..$ q:'data.frame': 1 obs. of 2 variables: .. ..$ x: num 1 .. ..$ y: num 3 ..$ n: chr "a" $ :List of 2 ..$ q:'data.frame': 1 obs. of 2 variables: .. ..$ x: num 21 .. ..$ y: num 3 ..$ n: chr "a" > #access > v[[2]]$q$x [1] 1 On Sat, Apr 26, 2008 at 8:04 PM, Worik R <[EMAIL PROTECTED]> wrote: > I cannot find out how to build data structures as lists of data structures. > > I want to do... > r-help@r-project.org > > d1 <- data.frame(x=1, y=2) > d2 <- data.frame(x=1, y=3) > d3 <- data.frame(x=21, y=3) > > > q1 <- data.frame(q=d1, n="a") > q2 <- data.frame(q=d2, n="a") > q3 <- data.frame(q=d3, n="a") > > > v <- vector() or list() or whatever > > v[1] <- q1 > v[2] <- q2 > v[3] <- q3 > > then access d2$x as: v[2]$q$x > > But I cannot get any thing like this. > > I can find no examples in the manuals. > > > cheers > Worik > > [[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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? ______________________________________________ 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.
