# fsMapViewSetWeatherRadarScanRate<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 fsMapViewSetWeatherRadarScanRate(
    FsContext ctx,
    FsTextureId id,
    float fScanRate
    )
```

 

##### 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`.                            |
| `fScanRate` | The new scan rate, expressed in {{< glossterm >}}rpm{{< /glossterm >}}. The default value is 12. |

{{< /table-wrapper >}}


 

##### Return Values

Returns `true` if successful, otherwise it will return `false`.

 

##### Remarks

N/A