part_egap_ep {redistmetrics}

Calculate Efficiency Gap (Equal Population Assumption)

Description

Calculate Efficiency Gap (Equal Population Assumption)

Usage

part_egap_ep(plans, shp, dvote, rvote)

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.

dvote

Unqouted name of column in shp with total population.

rvote

Unqouted name of column in shp with group population.

Value

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

References

Nicholas O. Stephanopoulos. 2015. Partisan Gerrymandering and the Efficiency Gap. The University of Chicago Law Review, 82, Pp. 831-900.

Examples

data(nh)
data(nh_m)
# For a single plan:
part_egap_ep(plans = nh$r_2020, shp = nh, rvote = nrv, dvote = ndv)

# Or many plans:
part_egap_ep(plans = nh_m[, 3:5], shp = nh, rvote = nrv, dvote = ndv)