bash - R: excluding all duplicates rows (both of each pair) based on one column -


this question has answer here:

i have file (called example.txt) looks following:

a b c   d e f   h c   z b y   b c   t e f   w o f

based on column 2, identify duplicate rows obtain following file:

h c   w o f

you can compute values occur once , select rows - this:

tab = table(df$v2) vals = unlist(attr(tab, "dimnames"))[which(tab == 1)] df[df$v2 %in% vals, ]   v1 v2 v3 3  h   c 7  w  o  f

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