Dear list members, when I create a data.frame containing an array I had expected, that I get a similar result, when subsetting it, like having a matrix in a data.frame. But instead I get only the first element and not all values of the remaining dimensions. Differences are already when creating the data.frame, where I can use `I` in case of a matrix but for an array I am only able to insert it in a second step.
DFA <- data.frame(id = 1:2) DFA[["ar"]] <- array(1:8, c(2,2,2)) DFA[1,] # id ar #1 1 1 DFM <- data.frame(id = 1:2, M = I(matrix(1:4, 2))) DFM[1,] # id M.1 M.2 #1 1 1 3 The same when trying to use merge, where only the first value is kept. merge(DFA, data.frame(id = 1)) # id ar #1 1 1 merge(DFM, data.frame(id = 1)) # id M.1 M.2 #1 1 1 3 Is there a way to use an array in a data.frame like I can use a matrix in a data.frame? I am using R version 4.3.0. Kind regards, Georg ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
