For a map with n precincts Returns an n-by-n matrix, where each
entry measures the fraction of the plans in which the row and column
precincts were in the same district.
Arguments
- plans
a redist_plans object.
- which
<data-masking>which plans to compute the co-occurrence over. Defaults to all.- sampled_only
if
TRUE, do not include reference plans.- ncores
the number of parallel cores to use in the computation.