# fsMapViewSetWeatherRadarClearColor<no value>
This function can be used to set the clear color of weather radar maps in the horizontal ([`FS_MAP_VIEW_WEATHER_RADAR_MODE_HORIZONTAL`](../fsmapviewsetweatherradarmode/#remarks)) and vertical ([`FS_MAP_VIEW_WEATHER_RADAR_MODE_VERTICAL`](../fsmapviewsetweatherradarmode/#remarks)) modes. The clear color is displayed outside of the weather radar cone. By default, the clear color is set to black. For alpha blending information, see [Remarks](#remarks).


##### Syntax

``` wasm
bool fsMapViewSetWeatherRadarClearColor(
    FsContext ctx,
    FsTextureId id,
    FsColor color
);
```


##### 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`](../fsmapviewcreate/). |
| `color` | The clear color to set. |

{{< /table-wrapper >}}


##### Return Values

Returns `false` if:

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

Otherwise it will return `true`.


##### Remarks

In order to get correct alpha blending (for clear colors with alpha values different than 0 and 1), the map view must be created with the [`FS_RENDER_IMAGE_PREMULTIPLIED`](../fsmapviewcreate/#remarks) image flag.