gisco_get_lau {giscoR}

Get GISCO urban areas sf polygons, points and lines

Description

gisco_get_communes() and gisco_get_lau() download shapes of Local Urban Areas, that correspond roughly with towns and cities.

Usage

gisco_get_communes(
  year = "2016",
  epsg = "4326",
  cache = TRUE,
  update_cache = FALSE,
  cache_dir = NULL,
  verbose = FALSE,
  spatialtype = "RG",
  country = NULL
)

gisco_get_lau(
  year = "2021",
  epsg = "4326",
  cache = TRUE,
  update_cache = FALSE,
  cache_dir = NULL,
  verbose = FALSE,
  country = NULL,
  gisco_id = NULL
)

Arguments

year

Release year of the file:

• For gisco_get_communes() one of "2001", "2004", "2006", "2008", "2010", "2013" or "2016".

• For gisco_get_lau() one of "2011", "2012", "2013", "2014", "2015", "2016", "2017", "2018", "2019", "2020" or "2021".

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:

• "BN": Boundaries - LINESTRING object.

• "COASTL": coastlines - LINESTRING object.

• "INLAND": inland boundaries - LINESTRING object.

• "LB": Labels - POINT object.

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

Note that parameters country and region would be only applied when spatialtype is "BN" or "RG".

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("Italy","ES","FRA")) would not work. See also countrycode::countrycode().

gisco_id

Optional. A character vector of GISCO_ID LAU values.

Value

A sf object specified by spatialtype. In the case of gisco_get_lau(), a POLYGON object.

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.

Note

Please check the download and usage provisions on gisco_attributions().

See Also

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

Examples

ire_lau <- gisco_get_communes(spatialtype = "LB", country = "Ireland")

if (!is.null(ire_lau)) {
  library(ggplot2)

  ggplot(ire_lau) +
    geom_sf(shape = 21, col = "#009A44", size = 0.5) +
    labs(
      title = "Communes in Ireland",
      subtitle = "Year 2016",
      caption = gisco_attributions()
    ) +
    theme_void() +
    theme(text = element_text(
      colour = "#009A44",
      family = "serif", face = "bold"
    ))
}