Source code for gerrychain.partition.geographic

from gerrychain.partition import Partition
from gerrychain.updaters import (
    Tally,
    boundary_nodes,
    cut_edges,
    cut_edges_by_part,
    exterior_boundaries,
    interior_boundaries,
    perimeter,
)


[docs]class GeographicPartition(Partition): """A :class:`Partition` with areas, perimeters, and boundary information included. These additional data allow you to compute compactness scores like `Polsby-Popper <https://en.wikipedia.org/wiki/Polsby-Popper_Test>`_. """ default_updaters = { "perimeter": perimeter, "exterior_boundaries": exterior_boundaries, "interior_boundaries": interior_boundaries, "boundary_nodes": boundary_nodes, "cut_edges": cut_edges, "area": Tally("area", alias="area"), "cut_edges_by_part": cut_edges_by_part, }