osmdata_xml: Return an OSM Overpass query in XML format Read an (XML...

In osmdatar/osmdata: Import 'OpenStreetMap' Data as Simple Features or Spatial Objects

Return an OSM Overpass query in XML format Read an (XML format) OSM Overpass response from a string, a connection, or a raw vector.

Description

Return an OSM Overpass query in XML format Read an (XML format) OSM Overpass response from a string, a connection, or a raw vector.

Usage

osmdata_xml(q, filename, quiet = TRUE, encoding)

Arguments

q	An object of class overpass_query constructed with opq and add_osm_feature or a string with a valid query, such as "(node(39.4712701,-0.3841326,39.4713799,-0.3839475);); out;". See examples below.
filename	If given, OSM data are saved to the named file
quiet	suppress status messages.
encoding	Unless otherwise specified XML documents are assumed to be encoded as UTF-8 or UTF-16. If the document is not UTF-8/16, and lacks an explicit encoding directive, this allows you to supply a default.

Value

An object of class xml2::xml_document containing the result of the overpass API query.

Note

Objects of class xml_document can be saved as .xml or .osm files with xml2::write_xml.

See Also

Other extract: osmdata_data_frame(), osmdata_sc(), osmdata_sf(), osmdata_sp()

Examples

## Not run: 
q <- opq ("hampi india")
q <- add_osm_feature (q, key = "historic", value = "ruins")
osmdata_xml (q, filename = "hampi.osm")

# Complex query as a string (not possible with regular osmdata functions)
q <- '[out:xml][timeout:50];
    area[name="Països Catalans"][boundary=political]->.boundaryarea;

    rel(area.boundaryarea)[admin_level=8][boundary=administrative];
    map_to_area -> .all_level_8_areas;

    ( nwr(area.boundaryarea)[amenity=townhall]; >; );
    is_in;
    area._[admin_level=8][boundary=administrative] -> .level_8_areas_with_townhall;

    (.all_level_8_areas; - .level_8_areas_with_townhall;);
    rel(pivot);
    out tags;'

no_townhall <- osmdata_xml (q)
no_townhall

## End(Not run)

osmdatar/osmdata documentation built on Feb. 16, 2025, 5:20 p.m.