Enumerate all weighting-scheme combinations of a given size

For each `n_combo` in `n_items`, enumerates every `combn(var_codes, n_combo)` and returns one weighting scheme per combination, with weight `1` on the variables in the combination and the others omitted entirely. Useful for exhaustive batch analyses (e.g. all 3-of-N PTIs).

Usage

get_all_weights_combs(var_codes, n_items = 3)

Arguments

var_codes

Character vector of variable codes to draw combinations from.

n_items

Integer or integer vector. Combination sizes to enumerate. Defaults to `3` (all 3-of-N combinations).

Value

A named list of tibbles. Each element is a tibble with columns `var_code` and `weight`; element names follow the pattern `"Wght of <n_combo> comb no. <index>"`. Total length is `sum(choose(length(var_codes), n_items))`.

See also

Other weights: get_min_admin_wght(), get_rand_weights()

Examples

data(rwa_mtdt_full)
codes <- rwa_mtdt_full$metadata$var_code
combos <- get_all_weights_combs(codes, n_items = 2)
length(combos)
#> [1] 3
choose(length(codes), 2)
#> [1] 3