## Get feature by type and ID

`elements.lookup() -> GeoJsonFeature`

**post** `/api/v1/features/lookup`

Get feature by type and ID

### Returns

- `class GeoJsonFeature`

  GeoJSON Feature representing an OSM element. Tags from the original OSM element are flattened directly into `properties` (not nested under a `tags` key). Metadata fields `@type` and `@id` identify the OSM element type and ID within properties.

  - `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[Float] | Array[Array[Float]] | Array[Array[Array[Float]]] | Array[Array[Array[Array[Float]]]]`

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

      - `Array[Float]`

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

      - `Array[Array[Float]]`

        Array of [lng, lat] positions

      - `Array[Array[Array[Float]]]`

        Array of linear rings / line strings

      - `Array[Array[Array[Array[Float]]]]`

        Array of polygons

    - `type: :Point | :LineString | :Polygon | 3 more`

      Geometry type

      - `:Point`

      - `:LineString`

      - `:Polygon`

      - `:MultiPoint`

      - `:MultiLineString`

      - `:MultiPolygon`

  - `properties: Hash[Symbol, untyped]`

    OSM tags flattened as key-value pairs, plus `@type` (node/way/relation) and `@id` (OSM ID) metadata fields. May include `distance_m` for proximity queries.

  - `type: :Feature`

    Always `Feature`

    - `:Feature`

  - `id: String`

    Compound identifier in `type/osm_id` format

### Example

```ruby
require "plaza"

plaza = Plaza::Client.new(
  api_key: "My API Key",
  environment: "local" # defaults to "production"
)

geo_json_feature = plaza.elements.lookup

puts(geo_json_feature)
```

#### Response

```json
{
  "geometry": {
    "coordinates": [
      2.3522,
      48.8566
    ],
    "type": "Point"
  },
  "properties": {
    "@id": "bar",
    "@type": "bar",
    "amenity": "bar",
    "cuisine": "bar",
    "name": "bar"
  },
  "type": "Feature",
  "id": "node/21154906"
}
```