## Calculate an isochrone from a point

`routing().isochrone(RoutingIsochroneParamsparams, RequestOptionsrequestOptions = RequestOptions.none()) : GeoJsonFeature`

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

Calculate an isochrone from a point

### Parameters

- `params: RoutingIsochroneParams`

  - `lat: Double`

    Latitude

  - `lng: Double`

    Longitude

  - `time: Double`

    Travel time in seconds (1-7200)

  - `mode: Optional<String>`

    Travel mode (auto, foot, bicycle)

### Returns

- `class GeoJsonFeature:`

  - `geometry: GeoJsonGeometry`

    - `coordinates: Coordinates`

      GeoJSON coordinates array (nesting depth varies by geometry type)

      - `List<Double>`

      - `List<List<Double>>`

      - `List<List<List<Double>>>`

      - `List<List<List<List<Double>>>>`

    - `type: Type`

      - `POINT("Point")`

      - `LINE_STRING("LineString")`

      - `POLYGON("Polygon")`

      - `MULTI_POINT("MultiPoint")`

      - `MULTI_LINE_STRING("MultiLineString")`

      - `MULTI_POLYGON("MultiPolygon")`

  - `properties: Properties`

  - `type: Type`

    - `FEATURE("Feature")`

  - `id: Optional<String>`

    Feature identifier (type/osm_id)

  - `osmId: Optional<Long>`

    OpenStreetMap ID

### Example

```kotlin
package com.plazafyi.example

import com.plazafyi.client.PlazaClient
import com.plazafyi.client.okhttp.PlazaOkHttpClient
import com.plazafyi.models.GeoJsonFeature
import com.plazafyi.models.routing.RoutingIsochroneParams

fun main() {
    val client: PlazaClient = PlazaOkHttpClient.fromEnv()

    val params: RoutingIsochroneParams = RoutingIsochroneParams.builder()
        .lat(0.0)
        .lng(0.0)
        .time(0.0)
        .build()
    val geoJsonFeature: GeoJsonFeature = client.routing().isochrone(params)
}
```