## Calculate an isochrone from a point

`client.routing.isochrone(RoutingIsochroneParamsquery, RequestOptionsoptions?): GeoJsonFeature`

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

Calculate an isochrone from a point

### Parameters

- `query: RoutingIsochroneParams`

  - `lat: number`

    Latitude

  - `lng: number`

    Longitude

  - `time: number`

    Travel time in seconds (1-7200)

  - `mode?: string`

    Travel mode (auto, foot, bicycle)

### Returns

- `GeoJsonFeature`

  - `geometry: GeoJsonGeometry`

    - `coordinates: Array<number> | Array<Array<number>> | Array<Array<Array<number>>> | Array<Array<Array<Array<number>>>>`

      GeoJSON coordinates array (nesting depth varies by geometry type)

      - `Array<number>`

      - `Array<Array<number>>`

      - `Array<Array<Array<number>>>`

      - `Array<Array<Array<Array<number>>>>`

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

      - `"Point"`

      - `"LineString"`

      - `"Polygon"`

      - `"MultiPoint"`

      - `"MultiLineString"`

      - `"MultiPolygon"`

  - `properties: Record<string, unknown>`

  - `type: "Feature"`

    - `"Feature"`

  - `id?: string`

    Feature identifier (type/osm_id)

  - `osm_id?: number`

    OpenStreetMap ID

### Example

```typescript
import Plaza from '@plazafyi/sdk';

const client = new Plaza({
  apiKey: process.env['PLAZA_API_KEY'], // This is the default and can be omitted
});

const geoJsonFeature = await client.routing.isochrone({
  lat: 0,
  lng: 0,
  time: 0,
});

console.log(geoJsonFeature.id);
```