GetPolygonBoundaries    Obtains the boundaries of the polygon(s)
LabelPointsWithinPolygons
                        Labels points located inside a polygon
census_tracts_sf        A simple feature of the 2010 Chicago census
                        tracts
census_tracts_spdf      A SpatialPolygonsDataFrame of the 2010 Chicago
                        census tracts
city_boundary_sf        City boundary of Chicago
city_boundary_spdf      A SpatialPolygonsDataFrame of the city boundary
                        of Chicago
community_areas_sf      Chicago's 77 community areas
community_areas_spdf    A SpatialPolygonsDataFrame of Chicago's 77
                        community areas
cps_sy1819              Chicago Public Schools (CPS) - School Profile
                        Information, School Year (SY) 2018-2019
pointdexter             pointdexter: labels longitudinal and
                        latitudinal coordinates located inside a
                        polygon
