Calculate Convex Hull Compactness

Source: R/compactness.R

Calculate Convex Hull Compactness

comp_ch(plans, shp, epsg = 3857, ncores = 1)

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 with an sf geometry column.

epsg

Numeric EPSG code to use to project the shapefile, if needed. Default is 3857.

ncores

Integer number of cores to use. Default is 1.

Value

A numeric vector. Can be shaped into a district-by-plan matrix.

Examples

data(nh)
data(nh_m)
# For a single plan:
comp_ch(plans = nh$r_2020, shp = nh)
#> [1] 0.6763964 0.6626738

# Or many plans:
comp_ch(plans = nh_m[, 3:5], shp = nh)
#> [1] 0.7088336 0.8065383 0.8821655 0.7185154 0.7885211 0.6458087