---
title: "init(scaleByX:byY:)"
framework: foundation
role: symbol
role_heading: Initializer
path: "foundation/affinetransform/init(scalebyx:byy:)"
---

# init(scaleByX:byY:)

Creates an affine transformation matrix from scaling values.

## Declaration

```swift
init(scaleByX x: CGFloat, byY y: CGFloat)
```

## Parameters

- `x`: The horizontal scale factor.
- `y`: The vertical scale factor.

## Discussion

Discussion The matrix takes the following form: [ x  0  0 ] [ 0  y  0 ] [ 0  0  1 ]

## See Also

### Creating Transforms

- [init()](foundation/affinetransform/init().md)
- [init(rotationByDegrees:)](foundation/affinetransform/init(rotationbydegrees:).md)
- [init(rotationByRadians:)](foundation/affinetransform/init(rotationbyradians:).md)
- [init(scale:)](foundation/affinetransform/init(scale:).md)
- [init(translationByX:byY:)](foundation/affinetransform/init(translationbyx:byy:).md)
- [init(m11:m12:m21:m22:tX:tY:)](foundation/affinetransform/init(m11:m12:m21:m22:tx:ty:).md)