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[nominatim.git] / docs / api / Lookup.md

diff --git a/docs/api/Lookup.md b/docs/api/Lookup.md
index 21c0bab24e36e5bb274a3d4bda6aa3a6f9c5d108..bed01275ecb721f8019460b2b307799b7fc7409e 100644 (file)
--- a/docs/api/Lookup.md
+++ b/docs/api/Lookup.md
@@ -1,54 +1,154 @@
-## Address lookup
+# Address lookup

 
 

-Lookup the address of one or multiple OSM objects like node, way or relation.
+The lookup API allows to query the address and other details of one or
+multiple OSM objects like node, way or relation.
+
+## Endpoint
+
+The lookup API has the following format:

 
 

-### Parameters

 ```
 ```

-  https://nominatim.openstreetmap.org/lookup?<query>
+  https://nominatim.openstreetmap.org/lookup?osm_ids=[N|W|R]<value>,…,…,&<params>

 ```
 
 ```
 

-* `format=[xml|json|geojson]`
+`osm_ids` is mandatory and must contain a comma-separated list of OSM ids each
+prefixed with its type, one of node(N), way(W) or relation(R). Up to 50 ids
+can be queried at the same time.
+
+!!! danger "Deprecation warning"
+    The API can also be used with the URL
+    `https://nominatim.openstreetmap.org/lookup.php`. This is now deprecated
+    and will be removed in future versions.
+
+
+## Parameters
+
+This section lists additional optional parameters.
+
+### Output format
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| format    | one of: `xml`, `json`, `jsonv2`, `geojson`, `geocodejson` | `jsonv2` |
+
+See [Place Output Formats](Output.md) for details on each format.
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| json_callback | function name | _unset_ |
+
+When given, then JSON output will be wrapped in a callback function with
+the given name. See [JSONP](https://en.wikipedia.org/wiki/JSONP) for more
+information.
+
+Only has an effect for JSON output formats.
+
+
+### Output details
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| addressdetails | 0 or 1 | 0 |
+
+When set to 1, include a breakdown of the address into elements.
+The exact content of the address breakdown depends on the output format.

 
 

-    * Output format
-    * Defaults to `xml`
+!!! tip
+    If you are interested in a stable classification of address categories
+    (suburb, city, state, etc), have a look at the `geocodejson` format.
+    All other formats return classifications according to OSM tagging.
+    There is a much larger set of categories and they are not always consistent,
+    which makes them very hard to work with.

 
 

-* `json_callback=<string>`

 
 

-    * Wrap json output in a callback function (JSONP) i.e. `<string>(<json>)` 
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| extratags | 0 or 1 | 0 |

 
 

-* `accept-language=<browser language string>`
+When set to 1, the response include any additional information in the result
+that is available in the database, e.g. wikipedia link, opening hours.

 
 

-    * Preferred language order for showing search results, overrides the value specified in the "Accept-Language" HTTP header.
-    * Either uses standard rfc2616 accept-language string or a simple comma separated list of language codes.

 
 

-* `osm_ids=[N|W|R]<value>,…,[N|W|R]<value`
-    * A list of up to 50 specific osm node, way or relations ids to return the addresses for
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| namedetails | 0 or 1 | 0 |

 
 

-* `addressdetails=[0|1]`
-    * defaults to 0
-    * Include a breakdown of the address into elements
+When set to 1, include a full list of names for the result. These may include
+language variants, older names, references and brand.

 
 

-* `email=<valid email address>`

 
 

-    * If you are making large numbers of request please include a valid email address or alternatively include your email address as part of the User-Agent string.
-    * This information will be kept confidential and only used to contact you in the event of a problem, see [Usage Policy](https://operations.osmfoundation.org/policies/nominatim/) for more details.
+### Language of results

 
 

-* `extratags=1`
-    * Include additional information in the result if available, e.g. wikipedia link, opening hours.
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| accept-language | browser language string | content of "Accept-Language" HTTP header |

 
 

-* `namedetails=1`
-    * Include a list of alternative names in the results.
-    * These may include language variants, references, operator and brand.
+Preferred language order for showing search results. This may either be
+a simple comma-separated list of language codes or have the same format
+as the ["Accept-Language" HTTP header](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Language).

 
 

-### Example
+!!! tip
+    First-time users of Nominatim tend to be confused that they get different
+    results when using Nominatim in the browser versus in a command-line tool
+    like wget or curl. The command-line tools
+    usually don't send any Accept-Language header, prompting Nominatim
+    to show results in the local language. Browsers on the contrary always
+    send the currently chosen browser language.
+
+
+### Polygon output
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| polygon_geojson | 0 or 1 | 0 |
+| polygon_kml     | 0 or 1 | 0 |
+| polygon_svg     | 0 or 1 | 0 |
+| polygon_text    | 0 or 1 | 0 |
+
+Add the full geometry of the place to the result output. Output formats
+in GeoJSON, KML, SVG or WKT are supported. Only one of these
+options can be used at a time.
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| polygon_threshold | floating-point number | 0.0 |
+
+When one of the polygon_* outputs is chosen, return a simplified version
+of the output geometry. The parameter describes the
+tolerance in degrees with which the geometry may differ from the original
+geometry. Topology is preserved in the geometry.
+
+
+### Other
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| email     | valid email address | _unset_ |
+
+If you are making large numbers of request please include an appropriate email
+address to identify your requests. See Nominatim's
+[Usage Policy](https://operations.osmfoundation.org/policies/nominatim/) for more details.
+
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| debug     | 0 or 1 | 0       |
+
+Output assorted developer debug information. Data on internals of Nominatim's
+"search loop" logic, and SQL queries. The output is HTML format.
+This overrides the specified machine readable format.
+
+
+## Examples

 
 ##### XML
 
 
 ##### XML
 

-[https://nominatim.openstreetmap.org/lookup?osm_ids=R146656,W104393803,N240109189](https://nominatim.openstreetmap.org/lookup?osm_ids=R146656,W104393803,N240109189)
+[https://nominatim.openstreetmap.org/lookup?osm_ids=R146656,W104393803,N240109189](https://nominatim.openstreetmap.org/lookup?osm_ids=R146656,W50637691,N240109189)

 
 ```xml
 
 ```xml

-  <lookupresults timestamp="Mon, 29 Jun 15 18:01:33 +0000" attribution="Data © OpenStreetMap contributors, ODbL 1.0. https://www.openstreetmap.org/copyright" querystring="R146656,W104393803,N240109189" polygon="false">
-    <place place_id="127761056" osm_type="relation" osm_id="146656" place_rank="16" lat="53.4791466" lon="-2.2447445" display_name="Manchester, Greater Manchester, North West England, England, United Kingdom" class="boundary" type="administrative" importance="0.704893333438333">
+  <lookupresults timestamp="Mon, 28 Mar 22 14:38:54 +0000" attribution="Data &#xA9; OpenStreetMap contributors, ODbL 1.0. http://www.openstreetmap.org/copyright" querystring="R146656,W50637691,N240109189" more_url="">
+    <place place_id="282236157" osm_type="relation" osm_id="146656" place_rank="16" address_rank="16" boundingbox="53.3401044,53.5445923,-2.3199185,-2.1468288" lat="53.44246175" lon="-2.2324547359718547" display_name="Manchester, Greater Manchester, North West England, England, United Kingdom" class="boundary" type="administrative" importance="0.35">

       <city>Manchester</city>
       <county>Greater Manchester</county>
       <state_district>North West England</state_district>
       <city>Manchester</city>
       <county>Greater Manchester</county>
       <state_district>North West England</state_district>


@@ -56,21 +156,20 @@ Lookup the address of one or multiple OSM objects like node, way or relation.
       <country>United Kingdom</country>
       <country_code>gb</country_code>
     </place>
       <country>United Kingdom</country>
       <country_code>gb</country_code>
     </place>

-    <place place_id="77769745" osm_type="way" osm_id="104393803" place_rank="30" lat="52.5162024" lon="13.3777343363579" display_name="Brandenburg Gate, 1, Pariser Platz, Mitte, Berlin, 10117, Germany" class="tourism" type="attraction" importance="0.443472858361592">
-      <attraction>Brandenburg Gate</attraction>
-      <house_number>1</house_number>
-      <pedestrian>Pariser Platz</pedestrian>
-      <suburb>Mitte</suburb>
-      <city_district>Mitte</city_district>
-      <city>Berlin</city>
-      <state>Berlin</state>
-      <postcode>10117</postcode>
+    <place place_id="115462561" osm_type="way" osm_id="50637691" place_rank="30" address_rank="30" boundingbox="52.3994612,52.3996426,13.0479574,13.0481754" lat="52.399550700000006" lon="13.048066846939687" display_name="Brandenburger Tor, Brandenburger Stra&#xDF;e, Historische Innenstadt, Innenstadt, Potsdam, Brandenburg, 14467, Germany" class="tourism" type="attraction" importance="0.29402874005524">
+      <tourism>Brandenburger Tor</tourism>
+      <road>Brandenburger Stra&#xDF;e</road>
+      <suburb>Historische Innenstadt</suburb>
+      <city>Potsdam</city>
+      <state>Brandenburg</state>
+      <postcode>14467</postcode>

       <country>Germany</country>
       <country_code>de</country_code>
     </place>
       <country>Germany</country>
       <country_code>de</country_code>
     </place>

-    <place place_id="2570600569" osm_type="node" osm_id="240109189" place_rank="15" lat="52.5170365" lon="13.3888599" display_name="Berlin, Germany" class="place" type="city" importance="0.822149797630868">
+    <place place_id="567505" osm_type="node" osm_id="240109189" place_rank="15" address_rank="16" boundingbox="52.3586925,52.6786925,13.2396024,13.5596024" lat="52.5186925" lon="13.3996024" display_name="Berlin, 10178, Germany" class="place" type="city" importance="0.78753902824914">

       <city>Berlin</city>
       <state>Berlin</state>
       <city>Berlin</city>
       <state>Berlin</state>

+      <postcode>10178</postcode>

       <country>Germany</country>
       <country_code>de</country_code>
     </place>
       <country>Germany</country>
       <country_code>de</country_code>
     </place>


@@ -79,38 +178,50 @@ Lookup the address of one or multiple OSM objects like node, way or relation.
 
 ##### JSON with extratags
 
 
 ##### JSON with extratags
 

-[https://nominatim.openstreetmap.org/lookup?osm_ids=W50637691&format=json](https://nominatim.openstreetmap.org/lookup?osm_ids=W50637691&format=json)
+[https://nominatim.openstreetmap.org/lookup?osm_ids=W50637691&format=json&extratags=1](https://nominatim.openstreetmap.org/lookup?osm_ids=W50637691&format=json&extratags=1)

 
 ```json
 [
 
 ```json
 [

-  {
-    "place_id": "84271358",
-    "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
-    "osm_type": "way",
-    "osm_id": "50637691",
-    "lat": "52.39955055",
-    "lon": "13.04806574678",
-    "display_name": "Brandenburger Tor, Brandenburger Straße, Nördliche Innenstadt, Innenstadt, Potsdam, Brandenburg, 14467, Germany",
-    "class": "historic",
-    "type": "city_gate",
-    "importance": "0.221233780277011",
-    "address": {
-      "address29": "Brandenburger Tor",
-      "pedestrian": "Brandenburger Straße",
-      "suburb": "Nördliche Innenstadt",
-      "city": "Potsdam",
-      "state": "Brandenburg",
-      "postcode": "14467",
-      "country": "Germany",
-      "country_code": "de"
-    },
-    "extratags": {
-      "image": "http://commons.wikimedia.org/wiki/File:Potsdam_brandenburger_tor.jpg",
-      "wikidata": "Q695045",
-      "wikipedia": "de:Brandenburger Tor (Potsdam)",
-      "wheelchair": "yes",
-      "description": "Kleines Brandenburger Tor in Potsdam"
-    }
-  }
+   {
+      "place_id": 115462561,
+      "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
+      "osm_type": "way",
+      "osm_id": 50637691,
+      "boundingbox": [
+        "52.3994612",
+        "52.3996426",
+        "13.0479574",
+        "13.0481754"
+      ],
+      "lat": "52.399550700000006",
+      "lon": "13.048066846939687",
+      "display_name": "Brandenburger Tor, Brandenburger Straße, Historische Innenstadt, Innenstadt, Potsdam, Brandenburg, 14467, Germany",
+      "class": "tourism",
+      "type": "attraction",
+      "importance": 0.2940287400552381,
+      "address": {
+        "tourism": "Brandenburger Tor",
+        "road": "Brandenburger Straße",
+        "suburb": "Historische Innenstadt",
+        "city": "Potsdam",
+        "state": "Brandenburg",
+        "postcode": "14467",
+        "country": "Germany",
+        "country_code": "de"
+      },
+      "extratags": {
+        "image": "http://commons.wikimedia.org/wiki/File:Potsdam_brandenburger_tor.jpg",
+        "heritage": "4",
+        "wikidata": "Q695045",
+        "architect": "Carl von Gontard;Georg Christian Unger",
+        "wikipedia": "de:Brandenburger Tor (Potsdam)",
+        "wheelchair": "yes",
+        "description": "Kleines Brandenburger Tor in Potsdam",
+        "heritage:website": "http://www.bldam-brandenburg.de/images/stories/PDF/DML%202012/04-p-internet-13.pdf",
+        "heritage:operator": "bldam",
+        "architect:wikidata": "Q68768;Q95223",
+        "year_of_construction": "1771"
+      }
+   }

 ]
 ```
 ]
 ```