giscoR (version 0.3.1)

gisco_get_urban_audit: Get GISCO greater cities and metropolitan areas sf polygons and points

Description

Returns polygons and points corresponding to cities, greater cities and metropolitan areas included on the Urban Audit report of Eurostat.

Usage

gisco_get_urban_audit(
  year = "2020",
  epsg = "4326",
  cache = TRUE,
  update_cache = FALSE,
  cache_dir = NULL,
  verbose = FALSE,
  spatialtype = "RG",
  country = NULL,
  level = NULL
)

Arguments

year

Release year of the file. One of "2001", "2004", "2014", "2018" or "2020".

epsg

projection of the map: 4-digit EPSG code. One of:

• "4258": ETRS89

• "4326": WGS84

• "3035": ETRS89 / ETRS-LAEA

• "3857": Pseudo-Mercator

cache

A logical whether to do caching. Default is TRUE. See About caching.

update_cache

A logical whether to update cache. Default is FALSE. When set to TRUE it would force a fresh download of the source .geojson file.

cache_dir

A path to a cache directory. See About caching.

verbose

Logical, displays information. Useful for debugging, default is FALSE.

spatialtype

Type of geometry to be returned:

• "LB": Labels - POINT object.

• "RG": Regions - MULTIPOLYGON/POLYGON object.

country

Optional. A character vector of country codes. It could be either a vector of country names, a vector of ISO3 country codes or a vector of Eurostat country codes. Mixed types (as c("Turkey","US","FRA")) would not work. See also countrycode::countrycode().

level

Level of Urban Audit. Possible values are "CITIES", "FUA", "GREATER_CITIES" or NULL, that would download the full dataset.

Value

A sf object specified by spatialtype.

About caching

You can set your cache_dir with gisco_set_cache_dir().

Sometimes cached files may be corrupt. On that case, try re-downloading the data setting update_cache = TRUE.

If you experience any problem on download, try to download the corresponding .geojson file by any other method and save it on your cache_dir. Use the option verbose = TRUE for debugging the API query.

For a complete list of files available check gisco_db.

See Also

gisco_get_communes(), gisco_get_lau()

Other political: gisco_bulk_download(), gisco_get_coastallines(), gisco_get_countries(), gisco_get_lau(), gisco_get_nuts(), gisco_get_postalcodes(), gisco_get_units()

Examples

# NOT RUN {
cities <- gisco_get_urban_audit(year = "2020", level = "CITIES")

bcn <- cities[cities$URAU_NAME == "Barcelona", ]

library(ggplot2)
ggplot(bcn) +
  geom_sf()
# }