View source: R/extract_duplicates.R
extract_duplicates | R Documentation |
Extract all duplicates, for visual inspection.
Note that it also contains the first occurrence of future
duplicates, unlike duplicated()
or dplyr::distinct()
). Also
contains an additional column reporting the number of missing
values for that row, to help in the decision-making when
selecting which duplicates to keep.
extract_duplicates(data, id)
data |
The data frame. |
id |
The ID variable for which to check for duplicates. |
For the easystats equivalent, see:
datawizard::data_unique()
.
A dataframe, containing all duplicates.
df1 <- data.frame(
id = c(1, 2, 3, 1, 3),
item1 = c(NA, 1, 1, 2, 3),
item2 = c(NA, 1, 1, 2, 3),
item3 = c(NA, 1, 1, 2, 3)
)
extract_duplicates(df1, id = "id")
# Filter to exclude duplicates
df2 <- df1[-c(1, 5), ]
df2
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