Hi, Try: ##Assuming X and Y are matrices (as stated) Y[!Y %in% X,,drop=FALSE] # numberall #[1,] "gen3" #[2,] "gen4" #[3,] "genx4" A.K.
I would like to exclude entire lines in matrix "Y" based in 2 collumns in matrix "X": Matrix "X": number1 number2 gen1 genx1 gen1 genx2 gen2 genx3 gen2 genx5 Matrix "Y": numberall gen1 genx1 gen2 genx2 gen3 genx3 gen4 genx4 Expected output matrix numberall gen3 gen4 gen4x Cheers. ______________________________________________ R-help@r-project.org mailing list 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.
