Generate a sequence of focal dates for chronic msPAF computation

A thin convenience wrapper around base::seq.Date() for generating the focal_dates vector passed to time_weighted_aggregate(). The most common use is a daily sequence for time-series analysis.

Usage

expand_focal_dates(start, end, by = "day")

Arguments

start

Start date (character "YYYY-MM-DD" or Date).

end

End date (character "YYYY-MM-DD" or Date).

by

Increment. Passed to base::seq.Date(). Common values: "day", "week", "month". Default "day".

Value

A Date vector from start to end at the specified increment.

Examples

# Monthly focal dates across 2024, e.g. to feed time_weighted_aggregate().
expand_focal_dates("2024-01-01", "2024-12-31", by = "month")
#>  [1] "2024-01-01" "2024-02-01" "2024-03-01" "2024-04-01" "2024-05-01"
#>  [6] "2024-06-01" "2024-07-01" "2024-08-01" "2024-09-01" "2024-10-01"
#> [11] "2024-11-01" "2024-12-01"