splits_count {redistmetrics}

Count the Number of Splits in Each Administrative Unit

Description

Tallies the number of unique administrative unit-districts. An unsplit administrative unit will return an entry of 1, while each additional administrative unit-district adds 1.

Usage

splits_count(plans, shp, admin)

Arguments

plans

A redist_plans object or plans_matrix where each row indicates a district assignment and each column is a plan.

shp

A redist_map object, tibble, or data frame containing other columns.

admin

Unqouted name of column in shp with numeric identifiers for administrative units.

Value

numeric matrix

Examples

data(nh)
data(nh_m)
# For a single plan:
splits_count(plans = nh$r_2020, shp = nh, admin = county)

# Or many plans:
splits_count(plans = nh_m[, 3:5], shp = nh, admin = county)