---
title: "dictionaryRepresentation(forAuxiliaryDataType:)"
framework: avfoundation
role: symbol
role_heading: Instance Method
path: "avfoundation/avportraiteffectsmatte/dictionaryrepresentation(forauxiliarydatatype:)"
---

# dictionaryRepresentation(forAuxiliaryDataType:)

A dictionary of primitive map information used for writing an image file with a portrait effects matte.

## Declaration

```swift
func dictionaryRepresentation(forAuxiliaryDataType outAuxDataType: AutoreleasingUnsafeMutablePointer<NSString?>?) -> [AnyHashable : Any]?
```

## Parameters

- `outAuxDataType`: Must be doc://com.apple.documentation/documentation/ImageIO/kCGImageAuxiliaryDataTypePortraitEffectsMatte.

## Return Value

Return Value A dictionary of primitive map information for CGImageDestinationAddAuxiliaryDataInfo(_:_:_:).

## See Also

### Examining a Portrait Effects matte

- [Extracting Portrait Effects matte image data from a photo](avfoundation/extracting-portrait-effects-matte-image-data-from-a-photo.md)
- [mattingImage](avfoundation/avportraiteffectsmatte/mattingimage.md)
- [pixelFormatType](avfoundation/avportraiteffectsmatte/pixelformattype.md)