vector_occurrence {oeli} | R Documentation |
Find the positions of first or last occurrence of unique vector elements
Description
This function finds the positions of first or last occurrence of unique vector elements.
Usage
vector_occurrence(x, type = "first")
Arguments
x |
[ |
type |
[ |
Value
An integer
vector
, the positions of the unique vector elements.
The ordering corresponds to unique(x)
, i.e., the i
-th element in
the output is the (first or last) occurrence of the i
-th element from
unique(x)
.
See Also
Other vector helpers:
check_numeric_vector()
,
check_probability_vector()
,
chunk_vector()
,
insert_vector_entry()
,
match_numerics()
,
permutations()
,
split_vector_at()
,
subsets()
Examples
x <- c(1, 1, 1, 2, 2, 2, 3, 3, 3)
unique(x)
vector_occurrence(x, "first")
vector_occurrence(x, "last")
[Package oeli version 0.7.0 Index]