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# FxHistogramChannel

Constants used to identify which channel a histogram operation should apply to.

```
typealias FxHistogramChannel = Int
```

## Topics

### Constants

[`var kFxHistogramChannel_RGB: Int`](/documentation/professional_video_applications/kFxHistogramChannel_RGB)

[`var kFxHistogramChannel_Red: Int`](/documentation/professional_video_applications/kFxHistogramChannel_Red)

[`var kFxHistogramChannel_Green: Int`](/documentation/professional_video_applications/kFxHistogramChannel_Green)

[`var kFxHistogramChannel_Blue: Int`](/documentation/professional_video_applications/kFxHistogramChannel_Blue)

[`var kFxHistogramChannel_Alpha: Int`](/documentation/professional_video_applications/kFxHistogramChannel_Alpha)


---

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