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# scaleBy(x:y:)

Scales subsequent drawing operations by an amount in each dimension.

```
mutating func scaleBy(x: CGFloat, y: CGFloat)
```

## Parameters

`x`

The amount to scale in the horizontal direction.

`y`

The amount to scale in the vertical direction.

## Discussion

Calling this method is equivalent to updating the context’s
[`transform`](/documentation/SwiftUI/GraphicsContext/transform) directly using the given scale factors:

```
transform = transform.scaledBy(x: x, y: y)
```

---

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