Hi, If you are game to use a tidy approach then you can use tidyr::pivot_wider()
library(dplyr) library(tidyr) x <- dplyr::tribble( ~ID, ~station, ~value, 12, "xy", 15, 12, "xz", 20, 13, "xy", 16, 13, "xz", 19) tidyr::pivot_wider(x, names_from = station, values_from = value) #> # A tibble: 2 × 3 #> ID xy xz #> <dbl> <dbl> <dbl> #> 1 12 15 20 #> 2 13 16 19 Cheers, Ben On Thu, Oct 13, 2022 at 5:07 PM Gábor Malomsoki <gmalomsoki1...@gmail.com> wrote: > > Dears, > > i need to create from a column of observations variables in a datafram like > this way: > example: > original: > ID station value > 12 xy 15 > 12 xz 20 > 13 xy 16 > 13 xz 19 > > new df: > > ID xy xz > 12 15 20 > 13 16 19 > > i have been looking around for examples, but i could not find any how to > change my df. > I would like to make regression analysis on the values from different > production stations, so my df is very huge. > > Please help on finding the package, description or anything else could help. > > Thank you in advance! > > Best regards > Malo > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.