## Reverse geocode a coordinate

`ReverseGeocodeResult Geocode.ReversePost(GeocodeReversePostParams?parameters, CancellationTokencancellationToken = default)`

**post** `/api/v1/geocode/reverse`

Reverse geocode a coordinate

### Parameters

- `GeocodeReversePostParams parameters`

  - `string format`

    Response format: json (default), geojson, csv, ndjson

  - `string lang`

    Language code for localized names (e.g. en, de, fr)

  - `Double lat`

    Legacy shorthand. Latitude. Use near param instead.

  - `string layer`

    Filter by layer: house or poi

  - `Long limit`

    Maximum results (default 1, max 20)

  - `Double lng`

    Legacy shorthand. Longitude. Use near param instead.

  - `string near`

    Point geometry for reverse geocode (lat,lng or GeoJSON). Alternative to lat/lng params.

  - `Long radius`

    Search radius in meters (default 200, max 5000)

### Returns

- `class ReverseGeocodeResult:`

  GeoJSON FeatureCollection of reverse geocoding results, ordered by distance from the query point. Content-Type: `application/geo+json`.

  - `required IReadOnlyList<GeocodingFeature> Features`

    Reverse geocoding results ordered by distance

    - `required GeoJsonGeometry Geometry`

      GeoJSON Geometry object per RFC 7946. Coordinates use [longitude, latitude] order. 3D coordinates [lng, lat, elevation] are used for elevation endpoints.

      - `required Coordinates Coordinates`

        Coordinates array. Nesting depth varies by geometry type: Point = [lng, lat], LineString = [[lng, lat], ...], Polygon = [[[lng, lat], ...], ...], etc.

        - `IReadOnlyList<Double>`

        - `IReadOnlyList<IReadOnlyList<Double>>`

        - `IReadOnlyList<IReadOnlyList<IReadOnlyList<Double>>>`

        - `IReadOnlyList<IReadOnlyList<IReadOnlyList<IReadOnlyList<Double>>>>`

      - `required Type Type`

        Geometry type

        - `"Point"Point`

        - `"LineString"LineString`

        - `"Polygon"Polygon`

        - `"MultiPoint"MultiPoint`

        - `"MultiLineString"MultiLineString`

        - `"MultiPolygon"MultiPolygon`

    - `required Properties Properties`

      Geocoding result properties

      - `required string DisplayName`

        Formatted address or place name

      - `string? Category`

        POI category (e.g. restaurant, cafe, park). Present for place results.

      - `string? City`

        City or town name. Present for address results.

      - `Double? Confidence`

        Interpolation confidence (0-1). Present only for interpolated results.

      - `string? Country`

        Country name. Present for reverse geocode address results.

      - `string? CountryCode`

        ISO 3166-1 alpha-2 country code

      - `Double? DistanceM`

        Distance from the query point in meters (reverse geocode / nearby only)

      - `string? FullAddress`

        Complete formatted address from the database. Present for reverse geocode address results.

      - `string? HouseNumber`

        House or building number. Present for address and interpolated results.

      - `Boolean? Interpolated`

        Whether this result was estimated by address interpolation rather than an exact database match.

      - `string? Name`

        Place name (raw). Present for reverse geocode place results.

      - `Long? OsmID`

        OpenStreetMap element ID (null for interpolated results)

      - `OsmType? OsmType`

        OSM element type (node, way, relation)

        - `"node"Node`

        - `"way"Way`

        - `"relation"Relation`

      - `string? Postcode`

        Postal code. Present for reverse geocode address results.

      - `Double? Score`

        Relevance score (higher is better). Incorporates text match quality, spatial proximity boost, and popularity signals. Not bounded to 0-1.

      - `Source? Source`

        Result source indicating how the result was found: structured (exact field match), bm25 (full-text search), fuzzy (trigram similarity), address (reverse geocode address), place (reverse geocode POI), interpolation (estimated from neighboring addresses)

        - `"structured"Structured`

        - `"bm25"Bm25`

        - `"fuzzy"Fuzzy`

        - `"address"Address`

        - `"place"Place`

        - `"interpolation"Interpolation`

      - `string? State`

        State or province name. Present for reverse geocode address results.

      - `string? Street`

        Street name. Present for address and interpolated results.

      - `string? Subcategory`

        POI subcategory. Present for place results.

      - `IReadOnlyDictionary<string, string>? Tags`

        Raw OSM tags. Present for place results.

      - `string? Wikipedia`

        Wikipedia article reference (e.g. en:Eiffel Tower). Present for notable places.

    - `required Type Type`

      - `"Feature"Feature`

  - `required Type Type`

    - `"FeatureCollection"FeatureCollection`

### Example

```csharp
GeocodeReversePostParams parameters = new();

var reverseGeocodeResult = await client.Geocode.ReversePost(parameters);

Console.WriteLine(reverseGeocodeResult);
```

#### Response

```json
{
  "features": [
    {
      "geometry": {
        "coordinates": [
          2.3522,
          48.8566
        ],
        "type": "Point"
      },
      "properties": {
        "display_name": "221B Baker Street, London, NW1 6XE, United Kingdom",
        "category": "restaurant",
        "city": "London",
        "confidence": 0,
        "country": "United Kingdom",
        "country_code": "GB",
        "distance_m": 0,
        "full_address": "221B Baker Street, London, NW1 6XE, United Kingdom",
        "house_number": "221B",
        "interpolated": true,
        "name": "Eiffel Tower",
        "osm_id": 21154906,
        "osm_type": "node",
        "postcode": "NW1 6XE",
        "score": 0,
        "source": "structured",
        "state": "England",
        "street": "Baker Street",
        "subcategory": "italian",
        "tags": {
          "foo": "string"
        },
        "wikipedia": "en:Eiffel Tower"
      },
      "type": "Feature"
    }
  ],
  "type": "FeatureCollection"
}
```