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# PixelLuminanceMetric

A metric that measures the average luminosity of pixels on an OLED display.

```
struct PixelLuminanceMetric
```

## Discussion

This metric corresponds to the [`MetricResult.pixelLuminance(_:)`](/documentation/MetricKit/MetricResult/pixelLuminance(_:)) case. It appears only in [`intervalEntries`](/documentation/MetricKit/MetricReport/intervalEntries) and is not included in state entries.

Average pixel luminance (APL) is expressed as a value from 0 to 100 in increments of 1. This metric is only available on devices with OLED displays. On other device types, no value is reported.

## Topics

### Measurements

[`let value: AverageStatistics<AveragePixelLuminance>`](/documentation/MetricKit/PixelLuminanceMetric/value)

Average pixel luminance for the application with statistical data.

## Relationships

### Conforms To

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

[`Decodable`](/documentation/Swift/Decodable)

[`Encodable`](/documentation/Swift/Encodable)

[`Sendable`](/documentation/Swift/Sendable)

---

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