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# vImage_CGAffineTransform

A structure for values that represent a Core Graphics–compatible affine transformation.

```
typealias vImage_CGAffineTransform = vImage_AffineTransform_Double
```

## Discussion

This structure represents the 3x2 matrix :

![3 by 2 matrix](images/com.apple.accelerate/media-2557524.gif)

This structure changes size to be the same size as the Core Graphics <doc://com.apple.documentation/documentation/CoreFoundation/CGAffineTransform> data structure. <doc://com.apple.documentation/documentation/CoreGraphics/cgaffinetransform> describes functions for creating and manipulating matrixes of this form.

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