Hello All, I can’t find the answer for this so I thought I would ask you lovely people.
I have a data frame with a column of names, some of which have non-alphabetical letters. How, do I extract the row indexes which do not meat the criteria of alphabetical [[:alpha:]]. Thanks in advance All the best Graeme library(dplyr) my_df <- data.frame(name1 = c("david", "mo", "ma4tilda856", "steph", "hadley", "574383"), name2 = c("craig", "salah", "dahl", "paris", "wick", "turing"), sex = c("m", "m", "f", "f", "m", "m”)) my_df %>% mutate_all(as.character) [[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.