В Fri, 5 Apr 2024 16:08:13 +0000 Jorgen Harmse <jhar...@roku.com> пишет:
> if duplicated really treated a row name as part of the row then > any(duplicated(data.frame(…))) would always be FALSE. My expectation > is that if key1 is a subset of key2 then all(duplicated(df[key1]) >= > duplicated(df[key2])) should always be TRUE. That's a good argument, thank you! Would you suggest similar changes to duplicated.matrix too? Currently it too returns 0-length output for 0-column inputs: # 0-column matrix for 0-column input str(duplicated(matrix(0, 5, 0))) # logi[1:5, 0 ] # 1-column matrix for 1-column input str(duplicated(matrix(0, 5, 1))) # logi [1:5, 1] FALSE TRUE TRUE TRUE TRUE # a dim-1 array for >1-column input str(duplicated(matrix(0, 5, 10))) # logi [1:5(1d)] FALSE TRUE TRUE TRUE TRUE -- Best regards, Ivan ______________________________________________ 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.
