Hi! I came across this unexpected behaviour in R. First I thought it was a bug in the assignment operator <- but now I think it's maybe a bug in the way data frames are being printed. What do you think?
Using R 4.3.1: > x <- data.frame(A = 1, B = 2, C = 3) > y <- data.frame(A = 1) > x A B C 1 1 2 3 > x$B <- y$A # works as expected > x A B C 1 1 1 3 > x$C <- y[1] # makes C disappear > x A B A 1 1 1 1 > str(x) 'data.frame': 1 obs. of 3 variables: $ A: num 1 $ B: num 1 $ C:'data.frame': 1 obs. of 1 variable: ..$ A: num 1 Why does the print(x) not show "C" as the name of the third element? I did mess up the data frame (and this was a mistake on my part), but finding the bug was harder because print(x) didn't show the C any longer. Thanks. With best wishes - . . . Christian ______________________________________________ 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.
