Find duplicated rows (based on 2 columns) in Data Frame in R

Question

I have a data frame in R which looks like:

| RIC    | Date                | Open   |
|--------|---------------------|--------|
| S1A.PA | 2011-06-30 20:00:00         


        

Answer 1

dplyr is so much nicer for this sort of thing:

library(dplyr)
yourDataFrame %>%
    distinct(RIC, Date, .keep_all = TRUE)

(the ".keep_all is optional. if not used, it will return only the deduped 2 columns. when used, it returns the deduped whole data frame)