## Calculate an isochrone from a point

`routing.isochrone(RoutingIsochroneParams**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: Optional[str]`

  Travel mode (auto, foot, bicycle)

### Returns

- `class GeoJsonFeature: …`

  - `geometry: GeoJsonGeometry`

    - `coordinates: Union[List[float], List[List[float]], List[List[List[float]]], List[List[List[List[float]]]]]`

      GeoJSON coordinates array (nesting depth varies by geometry type)

      - `List[float]`

      - `List[List[float]]`

      - `List[List[List[float]]]`

      - `List[List[List[List[float]]]]`

    - `type: Literal["Point", "LineString", "Polygon", 3 more]`

      - `"Point"`

      - `"LineString"`

      - `"Polygon"`

      - `"MultiPoint"`

      - `"MultiLineString"`

      - `"MultiPolygon"`

  - `properties: Dict[str, object]`

  - `type: Literal["Feature"]`

    - `"Feature"`

  - `id: Optional[str]`

    Feature identifier (type/osm_id)

  - `osm_id: Optional[int]`

    OpenStreetMap ID

### Example

```python
import os
from plaza import Plaza

client = Plaza(
    api_key=os.environ.get("PLAZA_API_KEY"),  # This is the default and can be omitted
)
geo_json_feature = client.routing.isochrone(
    lat=0,
    lng=0,
    time=0,
)
print(geo_json_feature.id)
```