## Look up elevation at one or more points

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

Look up elevation at one or more points

### Query Parameters

- `format: optional string`

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

- `lat: optional number`

  Latitude (single point)

- `lng: optional number`

  Longitude (single point)

- `locations: optional string`

  Pipe-separated lng,lat pairs (batch)

- `"output[fields]": optional string`

  Comma-separated property fields to include

- `"output[include]": optional string`

  Extra computed fields: bbox, center

- `"output[precision]": optional number`

  Coordinate decimal precision (1-15, default 7)

### Returns

- `ElevationLookupResult = object { geometry, properties, type }`

  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.

  - `geometry: GeoJsonGeometry`

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

    - `coordinates: array of number or array of array of number or array of array of array of number or array of array of array of array of number`

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

      - `Point = array of number`

        [longitude, latitude] or [longitude, latitude, elevation]

      - `LineStringOrMultiPoint = array of array of number`

        Array of [lng, lat] positions

      - `PolygonOrMultiLineString = array of array of array of number`

        Array of linear rings / line strings

      - `MultiPolygon = array of array of array of array of number`

        Array of polygons

    - `type: "Point" or "LineString" or "Polygon" or 3 more`

      Geometry type

      - `"Point"`

      - `"LineString"`

      - `"Polygon"`

      - `"MultiPoint"`

      - `"MultiLineString"`

      - `"MultiPolygon"`

  - `properties: object { elevation_m }`

    - `elevation_m: number`

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

  - `type: "Feature"`

    - `"Feature"`

### Example

```http
curl https://plaza.fyi/api/v1/elevation \
    -X POST \
    -H "Authorization: Bearer $PLAZA_API_KEY"
```

#### Response

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