`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