---
title: scaleX
framework: quartzcore
role: symbol
role_heading: Type Property
path: quartzcore/cavaluefunctionname/scalex
---

# scaleX

A value function scales by the input value along the x-axis. Animations referencing this value transform function must provide a single animation value.

## Declaration

```swift
static let scaleX: CAValueFunctionName
```

## See Also

### Constants

- [scale](quartzcore/cavaluefunctionname/scale.md)
- [scaleY](quartzcore/cavaluefunctionname/scaley.md)
- [scaleZ](quartzcore/cavaluefunctionname/scalez.md)