vec_identify_runs()
returns a vector of identifiers for the elements of
x
that indicate which run of repeated values they fall in. The number of
runs is also returned as an attribute, n
.
vec_identify_runs(x)
x | A vector. |
---|
An integer vector with the same size as x
. A scalar integer attribute,
n
, is attached.
Unlike base::rle()
, adjacent missing values are considered identical when
constructing runs. For example, vec_identify_runs(c(NA, NA))
will return
c(1, 1)
, not c(1, 2)
.
#> [1] 1 2 2 3 4 4 #> attr(,"n") #> [1] 4y <- c(1, 1, 1, 2, 2, 3) # With multiple columns, the runs are constructed rowwise df <- data_frame( x = x, y = y ) vec_identify_runs(df)#> [1] 1 2 2 3 4 5 #> attr(,"n") #> [1] 5