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Split a horizon into sequential solve windows

Source: R/solve_recursive.R
horizon_windows.Rd

Slices a horizon's milestone intervals into consecutive windows for sequential solving. Each window's horizon is built from the ORIGINAL interval rows (start/mid/end preserved exactly); step intervals are DECIDED per window and overlap further intervals are appended as look-ahead (solved for guidance, decisions discarded).

Usage

horizon_windows(horizon, step = 1L, overlap = 0L)

Arguments

horizon

a horizon object.

step

integer, milestone intervals decided per window (a scalar, or a vector of window sizes summing to at most the interval count).

overlap

integer, look-ahead intervals appended to each window.

Value

a list of window specs: horizon (the window's horizon), decided (its decided milestone years), lookahead (the look-ahead milestone years, possibly empty).

See also

solve_recursive()

Examples

h <- topia$modules$horizons$base

# one window per milestone year
vapply(horizon_windows(h), function(x) x$horizon@name, character(1))
#> [1] "w01_2025" "w02_2030" "w03_2040" "w04_2050"

# two years per window, overlapping by one
vapply(horizon_windows(h, step = 2L, overlap = 1L),
       function(x) x$horizon@name, character(1))
#> [1] "w01_2025" "w02_2040"