Merging map units through merge_by
or summarize
changes the indexing of each unit. Use this function to take a set of
redistricting plans from a redist
algorithm and re-index them to
be compatible with the original set of units.
pullback(plans, map = NULL)
a new, re-indexed, redist_plans
object
a redist_plans
object
optionally, a redist_map
object, which will be used to set the new population vector