Find sub-sequences of identical elements in a vector.

Source: R/sequence_utilities.R

Find sub-sequences of identical elements in a vector.

sub_seq(x, item = NULL)

subSeq(x, item = NULL)

Arguments

x

An atomic vector or a factor.

item

Optionally a specific value to look for in x.

Value

A dataframe.

See also

rle

Author

Søren Højsgaard, sorenh@math.aau.dk

Examples


x <- c(1, 1, 1, 0, 0, 1, 1, 1, 2, 2, 2, 1, 2, 2, 2, 3)
sub_seq(x)
#>   first last slength midpoint value
#> 1     1    3       3        2     1
#> 2     4    5       2        5     0
#> 3     6    8       3        7     1
#> 4     9   11       3       10     2
#> 5    12   12       1       12     1
#> 6    13   15       3       14     2
#> 7    16   16       1       16     3
sub_seq(x, item=1)
#>   first last slength midpoint value
#> 1     1    3       3        2     1
#> 2     6    8       3        7     1
#> 3    12   12       1       12     1