comp_polsby | R Documentation |
Calculate Polsby Popper Compactness
comp_polsby( plans, shp, use_Rcpp, perim_path, perim_df, epsg = 3857, ncores = 1 )
plans |
redist_plans object or plans_matrix where each row indicates a district assignment and each column is a plan |
shp |
redist_map object or tibble with sf geometry column |
use_Rcpp |
If |
perim_path |
path to perimeter tibble saved by |
perim_df |
tibble of perimeters from |
epsg |
numeric EPSG code to planarize to. Default is 3857. |
ncores |
numeric. Number of cores to use. Default is 1. |
numeric vector
Cox, E. 1927. A Method of Assigning Numerical and Percentage Values to the Degree of Roundness of Sand Grains. Journal of Paleontology, 1(3), 179-183.
Polsby, Daniel D., and Robert D. Popper. 1991. “The Third Criterion: Compactness as a procedural safeguard against partisan gerrymandering.” Yale Law & Policy Review 9 (2): 301–353.
data(nh) data(nh_m) # For a single plan: comp_polsby(plans = nh$r_2020, shp = nh) # Or many plans: comp_polsby(plans = nh_m[, 3:5], shp = nh)
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