geo_lite_struct_sf: Address search API in 'sf' format (structured query)

In nominatimlite: Interface with 'Nominatim' API Service

Address search API in sf format (structured query)

Description

Geocodes addresses already split into components and return the corresponding spatial object. This function returns the spatial object associated with the query using sf, see geo_lite_struct() for retrieving the data in tibble format.

This function correspond to the structured query search described in the API endpoint. For performing a free-form search use geo_lite_sf().

Usage

geo_lite_struct_sf(
  amenity = NULL,
  street = NULL,
  city = NULL,
  county = NULL,
  state = NULL,
  country = NULL,
  postalcode = NULL,
  limit = 1,
  full_results = FALSE,
  return_addresses = TRUE,
  verbose = FALSE,
  nominatim_server = "https://nominatim.openstreetmap.org/",
  custom_query = list(),
  points_only = TRUE
)

Arguments

amenity	Name and/or type of POI, see also geo_amenity.
street	House number and street name.
city	City.
county	County.
state	State.
country	Country.
postalcode	Postal Code.
limit	Maximum number of results to return per input address. Note that each query returns a maximum of 50 results.
full_results	Returns all available data from the API service. If FALSE (default) only latitude, longitude and address columns are returned. See also return_addresses.
return_addresses	Return input addresses with results if TRUE.
verbose	If TRUE then detailed logs are output to the console.
nominatim_server	The URL of the Nominatim server to use. Defaults to "https://nominatim.openstreetmap.org/".
custom_query	A named list with API-specific parameters to be used (i.e. list(countrycodes = "US")). See Details.
points_only	Logical TRUE/FALSE. Whether to return only spatial points (TRUE, which is the default) or potentially other shapes as provided by the Nominatim API (FALSE). See About Geometry Types.

Details

The structured form of the search query allows to look up up an address that is already split into its components. Each parameter represents a field of the address. All parameters are optional. You should only use the ones that are relevant for the address you want to geocode.

See https://nominatim.org/release-docs/latest/api/Search/ for additional parameters to be passed to custom_query.

Value

A sf object with the results.

About Geometry Types

The parameter points_only specifies whether the function results will be points (all Nominatim results are guaranteed to have at least point geometry) or possibly other spatial objects.

Note that the type of geometry returned in case of points_only = FALSE will depend on the object being geocoded:

• Administrative areas, major buildings and the like will be returned as polygons.

• Rivers, roads and their like as lines.

• Amenities may be points even in case of a points_only = FALSE call.

The function is vectorized, allowing for multiple addresses to be geocoded; in case of points_only = FALSE multiple geometry types may be returned.

See Also

geo_lite_struct().

Geocoding: geo_address_lookup(), geo_address_lookup_sf(), geo_amenity(), geo_amenity_sf(), geo_lite(), geo_lite_sf(), geo_lite_struct()

Get sf objects: bbox_to_poly(), geo_address_lookup_sf(), geo_amenity_sf(), geo_lite_sf(), reverse_geo_lite_sf()

Examples

# Map

pl_mayor <- geo_lite_struct_sf(
  street = "Plaza Mayor",
  county = "Comunidad de Madrid",
  country = "Spain", limit = 50,
  full_results = TRUE, verbose = TRUE
)

# Outline
ccaa <- geo_lite_sf("Comunidad de Madrid, Spain", points_only = FALSE)

library(ggplot2)

if (any(!sf::st_is_empty(pl_mayor), !sf::st_is_empty(ccaa))) {
  ggplot(ccaa) +
    geom_sf() +
    geom_sf(data = pl_mayor, aes(shape = addresstype, color = addresstype))
}

nominatimlite documentation built on Sept. 11, 2024, 7:47 p.m.