## Calculate an isochrone from a point

`routing.isochrone(**kwargs) -> GeoJsonFeature`

**get** `/api/v1/isochrone`

Calculate an isochrone from a point

### Parameters

- `lat: Float`

  Latitude

- `lng: Float`

  Longitude

- `time: Float`

  Travel time in seconds (1-7200)

- `mode: String`

  Travel mode (auto, foot, bicycle)

### Returns

- `class GeoJsonFeature`

  - `geometry: GeoJsonGeometry`

    - `coordinates: Array[Float] | Array[Array[Float]] | Array[Array[Array[Float]]] | Array[Array[Array[Array[Float]]]]`

      GeoJSON coordinates array (nesting depth varies by geometry type)

      - `Array[Float]`

      - `Array[Array[Float]]`

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

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

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

      - `:Point`

      - `:LineString`

      - `:Polygon`

      - `:MultiPoint`

      - `:MultiLineString`

      - `:MultiPolygon`

  - `properties: Hash[Symbol, untyped]`

  - `type: :Feature`

    - `:Feature`

  - `id: String`

    Feature identifier (type/osm_id)

  - `osm_id: Integer`

    OpenStreetMap ID

### Example

```ruby
require "plaza"

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

geo_json_feature = plaza.routing.isochrone(lat: 0, lng: 0, time: 0)

puts(geo_json_feature)
```