Compute consecutive run lengths for flatline detection

Usage

utilASRflagrleflat(vals, delta)

Arguments

vals: numeric vector of observed values.
delta: non-negative numeric scalar. Two adjacent observations are considered part of the same flat run if their absolute difference is less than or equal to delta.

Value

Integer vector the same length as vals giving the run length at each position.

Details

For each position \(i\), the run length is the number of consecutive observations ending at \(i\) (including \(i\) itself) for which each successive absolute difference is \(\le\) delta. A run length of 1 means the observation is not part of a flat stretch. NA values in vals break the run.

Examples

vals <- c(10, 10, 10.005, 10.003, 12, 12, 12)
utilASRflagrleflat(vals, delta = 0.01)
#> [1] 1 2 3 4 1 2 3