# GetChannelIndex

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

GetChannelIndex

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## Declaration

public int GetChannelIndex(SceneSegmentationChannel channel)

#### Summary

Get the channel index of a specified semantic class. This corresponds to a bit position in the packed
    scene segmentation buffer, with index 0 being the most-significant bit.

#### Returns

The index of the specified semantic class, or -1 if the channel does not exist.

### Parameters

| Name | Type | Summary |
| --- | --- | --- |
| channel | SceneSegmentationChannel | The semantic channel. |

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