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)

## Arguments

plans

a redist_plans object

map

optionally, a redist_map object, which will be used to set the new population vector

## Value

a new, re-indexed, redist_plans object