comp_bc {redistmetrics}

Calculate Boyce Clark Ratio

Description

Calculate Boyce Clark Ratio

Usage

comp_bc(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.

References

Boyce, R., & Clark, W. 1964. The Concept of Shape in Geography. Geographical Review, 54(4), 561-572.

Examples

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

# Or many plans:

# slower, beware!
comp_bc(plans = nh_m[, 3:5], shp = nh)