---
title: kCISamplerAffineMatrix
framework: coreimage
role: symbol
role_heading: Global Variable
path: coreimage/kcisampleraffinematrix
---

# kCISamplerAffineMatrix

The key for an affine matrix. The associated value is an NSArray object ([a b c d tx ty]) that defines the transformation to apply to the sampler.

## Declaration

```swift
let kCISamplerAffineMatrix: String
```

## See Also

### Constants

- [kCISamplerWrapMode](coreimage/kcisamplerwrapmode.md)
- [kCISamplerFilterMode](coreimage/kcisamplerfiltermode.md)
- [kCISamplerColorSpace](coreimage/kcisamplercolorspace.md)