loadCoordUS: Get USA coordinates

Description

Loads and returns names, ids, and coordinates for USA, to use with mapping functions and other "map" functions that accept an sf object.

Usage

loadCoordUS(unit = c("country", "region", "division", "state",
                     "county", "district", "district_county", "urban_area"),
            year = c("2018"), scale = c("20", "50", "500"),
            unit_subset = NULL, matchWith = NULL, dir = NULL,
            use_cache = TRUE, use_internet = TRUE, crs = NULL)

Value

A data.frame object with columns indicating names, ids, and the geometry to map.

Arguments

unit: type of USA unit to link
year: year of the analysis
scale: the scale of the map
unit_subset: character vector of unit names to extract
matchWith: the type of id
dir: local directory in which shape files are stored
use_cache: a logical value indicating whether to use the cache
use_internet: a logical value indicating wheter the coordinates are downloaded from https://github.com/mappinguniverse/geospatial. If FALSE the maps downloaded during package installation will be used
crs: coordinate reference system. Look at st_crs

Author

Alessio Serafini

Details

Coordinates are downloaded from the Github repo https://github.com/mappinguniverse/geospatial from US folder https://github.com/mappinguniverse/geospatial/tree/master/US.

If unit is not specified, borders of the USA countries are loaded.

References

https://github.com/mappinguniverse/geospatial

Examples

Run this code


US_coords = loadCoordUS(unit = "state")
str(US_coords)


# \donttest{
coords_us<- loadCoordUS(unit = "state", unit_subset = c("Florida", "California"))
# }

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