The default 'maps' package for R contains bounded polygons defining various regions around the world. One such region is Manhattan, although in this instance the polygon points are shifted off of the island's true location by a significant degree. In some use-cases, this discrepancy may prove unacceptable. Actual bounding coordinates for Manhatt…

comparison.png

Manhattan Geocoded Boundary

lat       long
40.700292, -74.010773
40.707580, -73.999271
40.710443, -73.978758
40.721762, -73.971977
40.729568, -73.971291
40.733503, -73.973994
40.746834, -73.968072
40.775114, -73.941936
40.778884, -73.942580
40.781906, -73.943589
40.785351, -73.939362
40.789640, -73.936272
40.793149, -73.932238
40.795228, -73.929491
40.801141, -73.928976
40.804877, -73.930907
40.810496, -73.934298
40.834074, -73.934383
40.855371, -73.922281
40.870690, -73.908892
40.878348, -73.928289
40.851151, -73.947258
40.844074, -73.947086
40.828229, -73.955498
40.754019, -74.008713
40.719941, -74.013863
40.718575, -74.013605
40.718802, -74.017038
40.704977, -74.020042
40.700553, -74.016438

manhattan.r

library(maps)
all_states <- map_data('state') 
ny <- subset(all_states, subregion %in% c( "manhattan") )
print ny

# =>
#           long      lat group order   region subregion
# 9050 -73.92874 40.80605    34  9050 new york manhattan
# 9051 -73.93448 40.78886    34  9051 new york manhattan
# 9052 -73.95166 40.77741    34  9052 new york manhattan
# 9053 -73.96312 40.75449    34  9053 new york manhattan
# 9054 -73.96885 40.73730    34  9054 new york manhattan
# 9055 -73.97458 40.72584    34  9055 new york manhattan
# 9056 -74.00323 40.71438    34  9056 new york manhattan
# 9057 -74.02042 40.70865    34  9057 new york manhattan
# 9058 -74.02615 40.72011    34  9058 new york manhattan
# 9059 -74.00323 40.76595    34  9059 new york manhattan
# 9060 -73.97458 40.79460    34  9060 new york manhattan
# 9061 -73.95166 40.83470    34  9061 new york manhattan
# 9062 -73.93448 40.84044    34  9062 new york manhattan
# 9063 -73.92874 40.83470    34  9063 new york manhattan
# 9064 -73.93448 40.82324    34  9064 new york manhattan
# 9065 -73.92874 40.80605    34  9065 new york manhattan