I have two variables in a data frame, I want to generate two additional variables. For every observations (i.e. every row), I want the first new variable 'min' to carry the minimum of the two existing variables, and I want the second new variable 'max' to carry the maximum of the two existing variables. I then want to sort the data frame by min and max, and delete duplicated rows if both rows has the same min and same max.
I am new to R so not sure how to fix my code. Here is my attempt and it is not working. Thanks! edge_dir$min=edge_dir[if (edge_dir$cid_dir1 < edeg_dir$cid_dir2) edge_dir$cid_dir1 else edge_dir$cid_dir2] edge_dir$max=edge_dir[if (edge_dir$cid_dir1 > edeg_dir$cid_dir2) edge_dir$cid_dir1 else edge_dir$cid_dir2] -- View this message in context: http://www.nabble.com/How-to-find-the-min-and-max-of-two-variables-in-a-data-frame-tp24638856p24638856.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
