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update API documentation

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Sarah Hoffmann
2023-08-28 10:31:58 +02:00
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docs/api/Lookup.md
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@@ -3,7 +3,7 @@
The lookup API allows to query the address and other details of one or
multiple OSM objects like node, way or relation.
## Parameters
## Endpoint
The lookup API has the following format:
@@ -15,75 +15,129 @@ The lookup API has the following format:
prefixed with its type, one of node(N), way(W) or relation(R). Up to 50 ids
can be queried at the same time.
Additional optional parameters are explained below.
!!! 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
* `format=[xml|json|jsonv2|geojson|geocodejson]`
| Parameter | Value | Default |
|-----------| ----- | ------- |
| format | one of: `xml`, `json`, `jsonv2`, `geojson`, `geocodejson` | `jsonv2` |
See [Place Output Formats](Output.md) for details on each format. (Default: xml)
See [Place Output Formats](Output.md) for details on each format.
* `json_callback=<string>`
Wrap JSON output in a callback function (JSONP) i.e. `<string>(<json>)`.
| 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
* `addressdetails=[0|1]`
| Parameter | Value | Default |
|-----------| ----- | ------- |
| addressdetails | 0 or 1 | 0 |
Include a breakdown of the address into elements. (Default: 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.
!!! 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.
* `extratags=[0|1]`
| Parameter | Value | Default |
|-----------| ----- | ------- |
| extratags | 0 or 1 | 0 |
Include additional information in the result if available,
e.g. wikipedia link, opening hours. (Default: 0)
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.
* `namedetails=[0|1]`
| Parameter | Value | Default |
|-----------| ----- | ------- |
| namedetails | 0 or 1 | 0 |
Include a list of alternative names in the results. These may include
language variants, references, operator and brand. (Default: 0)
When set to 1, include a full list of names for the result. These may include
language variants, older names, references and brand.
### Language of results
* `accept-language=<browser language string>`
| Parameter | Value | Default |
|-----------| ----- | ------- |
| accept-language | browser language string | content of "Accept-Language" HTTP header |
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).
!!! 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 contratry always
send the currently chosen browser language.
Preferred language order for showing search results, overrides the value
specified in the "Accept-Language" HTTP header.
Either use a standard RFC2616 accept-language string or a simple
comma-separated list of language codes.
### Polygon output
* `polygon_geojson=1`
* `polygon_kml=1`
* `polygon_svg=1`
* `polygon_text=1`
| 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 |
Output geometry of results as a GeoJSON, KML, SVG or WKT. Only one of these
options can be used at a time. (Default: 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.
* `polygon_threshold=0.0`
| Parameter | Value | Default |
|-----------| ----- | ------- |
| polygon_threshold | floating-point number | 0.0 |
Return a simplified version of the output geometry. The parameter is the
When one og 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 result. (Default: 0.0)
geometry. Topology is preserved in the geometry.
### Other
* `email=<valid email address>`
| 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.
address to identify your requests. See Nominatim's
[Usage Policy](https://operations.osmfoundation.org/policies/nominatim/) for more details.
* `debug=[0|1]`
| 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 (rough) HTML format.
This overrides the specified machine readable format. (Default: 0)
"search loop" logic, and SQL queries. The output is HTML format.
This overrides the specified machine readable format.
## Examples