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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)An integer vector with the same size as x. A scalar integer attribute,
n, is attached.
A vector.
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).
x <- c("a", "z", "z", "c", "a", "a")
vec_identify_runs(x)
y <- 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)
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