# fsMapViewSetWeatherRadarConeAngleInRadians<no value>
This function can be used to specify the angle of the cone in which the weather radar will display rainfall. Note that this is only useful if the `fsMapViewSetWeatherRadarMode` has been set to horizontal or vertical.

 

 

##### Syntax

``` wasm
bool fsMapViewSetWeatherRadarConeAngleInRadians(
    FsContext ctx,
    FsTextureId id,
    float fConeAngle
    )
```

 

##### Members

{{< table-wrapper >}}

| Parameters   | Description                                                                                                     |
|--------------|-----------------------------------------------------------------------------------------------------------------|
| `ctx`        | A value of type `FsContext` provided as an argument of the gauge callback.                                      |
| `id`         | The MapView render ID as returned by the function `fsMapViewCreate`.                                            |
| `fConeAngle` | The angle of the "cone of vision" for the weather radar, expressed in radians, from 0 to \(\frac{2}{\pi}\). |

{{< /table-wrapper >}}


 

##### Return Values

Returns false if:

-   no texture matches the given MapView ID
-   the `ctx` is invalid

Otherwise it will return true.

 

 

##### Remarks

N/A