Downloads crosswalks from https://www.census.gov/geographies/reference-files/time-series/geo/relationship-files.html. Adjusts land overlap area to ensure weights sum to 1.
pl_crosswalk(abbr, from_year = 2010L, to_year = from_year + 10L)
A tibble, with two sets of GEOIDs and overlap information.
if (FALSE) { # \dontrun{
# Takes a bit of time to run
pl_crosswalk("RI", 2010, 2020)
} # }