3 The [\reverse](Reverse.md), [\search](Search.md) and [\lookup](Lookup.md)
4 API calls produce very similar output which is explained in this section.
5 There is one section for each format which is selectable via the `format`
12 The JSON format returns an array of places (for search and lookup) or
13 a single place (for reverse) of the following format:
18 "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
21 "boundingbox": ["51.3473219", "51.6673219", "-0.2876474", "0.0323526"],
24 "display_name": "London, Greater London, England, SW1A 2DU, United Kingdom",
27 "importance": 0.9654895765402,
28 "icon": "https://nominatim.openstreetmap.org/images/mapicons/poi_place_city.p.20.png",
31 "state_district": "Greater London",
33 "postcode": "SW1A 2DU",
34 "country": "United Kingdom",
39 "website": "http://www.london.gov.uk",
41 "wikipedia": "en:London",
42 "population": "8416535"
47 The possible fields are:
49 * `place_id` - reference to the Nominatim internal database ID
50 * `osm_type`, `osm_id` - reference to the OSM object
51 * `boundingbox` - area of corner coordinates
52 * `lat`, `lon` - latitude and longitude of the centroid of the object
53 * `display_name` - full comma-separated address
54 * `class`, `type` - key and value of the main OSM tag
55 * `importance` - computed importance rank
56 * `icon` - link to class icon (if available)
57 * `address` - dictionary of address details (only with `addressdetails=1`)
58 * `extratags` - dictionary with additional useful tags like website or maxspeed
59 (only with `extratags=1`)
60 * `namedetails` - dictionary with full list of available names including ref etc.
61 * `geojson`, `svg`, `geotext`, `geokml` - full geometry
62 (only with the appropriate `polygon_*` parameter)
66 This is the same as the JSON format with two changes:
68 * `class` renamed to `category`
69 * additional field `place_rank` with the search rank of the object
73 This format follows the [RFC7946](http://geojson.org). Every feature includes
74 a bounding box (`bbox`).
76 The feature list has the following fields:
78 * `place_id` - reference to the Nominatim internal database ID
79 * `osm_type`, `osm_id` - reference to the OSM object
80 * `category`, `type` - key and value of the main OSM tag
81 * `display_name` - full comma-separated address
82 * `place_rank` - class search rank
83 * `importance` - computed importance rank
84 * `icon` - link to class icon (if available)
85 * `address` - dictionary of address details (only with `addressdetails=1`)
86 * `extratags` - dictionary with additional useful tags like website or maxspeed
87 (only with `extratags=1`)
88 * `namedetails` - dictionary with full list of available names including ref etc.
90 Use `polygon_geojson` to output the full geometry of the object instead
95 The GeocodeJSON format follows the
96 [GeocodeJSON spec 0.1.0](https://github.com/geocoders/geocodejson-spec).
97 The following feature attributes are implemented:
99 * `osm_type`, `osm_id` - reference to the OSM object (unofficial extension)
100 * `type` - value of the main tag of the object (e.g. residential, restaurant, ...)
101 * `label` - full comma-separated address
102 * `name` - localised name of the place
103 * `housenumber`, `street`, `locality`, `postcode`, `city`,
104 `district`, `county`, `state`, `country` -
105 provided when it can be determined from the address
106 (see [this issue](https://github.com/openstreetmap/Nominatim/issues/1080) for
107 current limitations on the correctness of the address) and `addressdetails=1`
109 * `admin` - list of localised names of administrative boundaries (only with `addressdetails=1`)
111 Use `polygon_geojson` to output the full geometry of the object instead
116 The XML response returns one or more place objects in slightly different
117 formats depending on the API call.
122 <reversegeocode timestamp="Sat, 11 Aug 18 11:53:21 +0000"
123 attribution="Data © OpenStreetMap contributors, ODbL 1.0. http://www.openstreetmap.org/copyright"
124 querystring="lat=48.400381&lon=11.745876&zoom=5&format=xml">
125 <result place_id="179509537" osm_type="relation" osm_id="2145268" ref="BY"
126 lat="48.9467562" lon="11.4038717"
127 boundingbox="47.2701114,50.5647142,8.9763497,13.8396373">
131 <state>Bavaria</state>
132 <country>Germany</country>
133 <country_code>de</country_code>
136 <tag key="place" value="state"/>
137 <tag key="wikidata" value="Q980"/>
138 <tag key="wikipedia" value="de:Bayern"/>
139 <tag key="population" value="12520000"/>
140 <tag key="name:prefix" value="Freistaat"/>
145 The attributes of the outer `reversegeocode` element return generic information
146 about the query, including the time when the response was sent (in UTC),
147 attribution to OSM and the original querystring.
149 The place information can be found in the `result` element. The attributes of that element contain:
151 * `place_id` - reference to the Nominatim internal database ID
152 * `osm_type`, `osm_id` - reference to the OSM object
153 * `ref` - content of `ref` tag if it exists
154 * `lat`, `lon` - latitude and longitude of the centroid of the object
155 * `boundingbox` - comma-separated list of corner coordinates
157 The full address address of the result can be found in the content of the
158 `result` element as a comma-separated list.
160 Additional information requested with `addressdetails=1`, `extratags=1` and
161 `namedetails=1` can be found in extra elements.
163 #### Search and Lookup
166 <searchresults timestamp="Sat, 11 Aug 18 11:55:35 +0000"
167 attribution="Data © OpenStreetMap contributors, ODbL 1.0. http://www.openstreetmap.org/copyright"
168 querystring="london" polygon="false" exclude_place_ids="100149"
169 more_url="https://nominatim.openstreetmap.org/search.php?q=london&addressdetails=1&extratags=1&exclude_place_ids=100149&format=xml&accept-language=en-US%2Cen%3Bq%3D0.7%2Cde%3Bq%3D0.3">
170 <place place_id="100149" osm_type="node" osm_id="107775" place_rank="15"
171 boundingbox="51.3473219,51.6673219,-0.2876474,0.0323526" lat="51.5073219" lon="-0.1276474"
172 display_name="London, Greater London, England, SW1A 2DU, United Kingdom"
173 class="place" type="city" importance="0.9654895765402"
174 icon="https://nominatim.openstreetmap.org/images/mapicons/poi_place_city.p.20.png">
176 <tag key="capital" value="yes"/>
177 <tag key="website" value="http://www.london.gov.uk"/>
178 <tag key="wikidata" value="Q84"/>
179 <tag key="wikipedia" value="en:London"/>
180 <tag key="population" value="8416535"/>
183 <state_district>Greater London</state_district>
184 <state>England</state>
185 <postcode>SW1A 2DU</postcode>
186 <country>United Kingdom</country>
187 <country_code>gb</country_code>
192 The attributes of the outer `searchresults` or `lookupresults` element return
193 generic information about the query:
195 * `timestamp` - UTC time when the response was sent
196 * `attribution` - OSM licensing information
197 * `querystring` - original query
198 * `polygon` - true when extra geometry information was requested
199 * `exclude_place_ids` - IDs of places that should be ignored in a follow-up request
200 * `more_url` - search call that will yield additional results for the query
203 The place information can be found in the `place` elements, of which there may
204 be more than one. The attributes of that element contain:
206 * `place_id` - reference to the Nominatim internal database ID
207 * `osm_type`, `osm_id` - reference to the OSM object
208 * `ref` - content of `ref` tag if it exists
209 * `lat`, `lon` - latitude and longitude of the centroid of the object
210 * `boundingbox` - comma-separated list of corner coordinates
211 * `place_rank` - class search rank
212 * `display_name` - full comma-separated address
213 * `class`, `type` - key and value of the main OSM tag
214 * `importance` - computed importance rank
215 * `icon` - link to class icon (if available)
217 When `addressdetails=1` is requested, the localised address parts appear
218 as subelements with the type of the address part.
220 Additional information requested with `extratags=1` and `namedetails=1` can
221 be found in extra elements as sub-element of each place.