[R] Checking for duplicate rows in data frame efficiently

[T.D. Rudolph]

Henrique is correct; entering duplicated(df) will return an index of TRUE or
FALSE for every row.  TRUE indicates a duplicated row.

df[duplicated(df),]  # shows which rows are repeated
df[-duplicated(df),] # shows which rows are unique
-- 
View this message in context: http://r.789695.n4.nabble.com/Checking-for-duplicate-rows-in-data-frame-efficiently-tp2288120p2288166.html
Sent from the R help mailing list archive at Nabble.com.