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..._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.