Hello, thank you for accepting me into the list. I have the following dataframe:
row.names X Y Z 000_001 000_002 000_003 1 sample sample sample sample 2 sample2 Au5 Au32 Au5 3 sample3 C C C 4 ........... .. ..n ............ .... ....... ............ I would like to select al the columns that have Au5 and C. thank you in advance for your help, james [[alternative HTML version deleted]] ______________________________________________ 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.