## Look up elevation at one or more points

`ElevationLookupResult Elevation.LookupPost(ElevationLookupPostParams?parameters, CancellationTokencancellationToken = default)`

**post** `/api/v1/elevation`

Look up elevation at one or more points

### Parameters

- `ElevationLookupPostParams parameters`

  - `string format`

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

  - `Double lat`

    Latitude (single point)

  - `Double lng`

    Longitude (single point)

  - `string locations`

    Pipe-separated lng,lat pairs (batch)

  - `string outputFields`

    Comma-separated property fields to include

  - `string outputInclude`

    Extra computed fields: bbox, center

  - `Long outputPrecision`

    Coordinate decimal precision (1-15, default 7)

### Returns

- `class ElevationLookupResult:`

  GeoJSON Point Feature with a 3D coordinate [lng, lat, elevation] per RFC 7946 §3.1.1. The elevation is also available in `properties.elevation_m` for convenience.

  - `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`

    - `required Double ElevationM`

      Elevation in meters above mean sea level (WGS84 EGM96 geoid)

  - `required Type Type`

    - `"Feature"Feature`

### Example

```csharp
ElevationLookupPostParams parameters = new();

var elevationLookupResult = await client.Elevation.LookupPost(parameters);

Console.WriteLine(elevationLookupResult);
```

#### Response

```json
{
  "geometry": {
    "coordinates": [
      2.3522,
      48.8566
    ],
    "type": "Point"
  },
  "properties": {
    "elevation_m": 35.2
  },
  "type": "Feature"
}
```