# GetChannelNamesAt

Source: https://www.nianticspatial.com/docs/api/unity/NianticSpatial.NSDK.AR.SceneSegmentation.ARSceneSegmentationManager.GetChannelNamesAt/

GetChannelNamesAt
Returns an array of channel names that are present for the specified pixel onscreen (for display purposes).

---

## Declaration

public List<string> GetChannelNamesAt(int viewportX, int viewportY, Nullable<XRCameraParams> cameraParams = null)

#### Summary

Returns an array of channel names that are present for the specified pixel onscreen (for display purposes).

#### Remarks

This query allocates garbage.

#### Returns

An array of channel names present for the pixel.

### Parameters

| Name | Type | Summary |
| --- | --- | --- |
| viewportX | int | Horizontal coordinate in viewport space. |
| viewportY | int | Vertical coordinate in viewport space. |
| cameraParams | Nullable<XRCameraParams> | Params of the viewport to sample with. Defaults to current screen dimensions if null. |

---