---
title: dimension
framework: ML Compute
role: symbol
role_heading: Instance Property
platforms: [iOS 14.0+, iPadOS 14.0+, Mac Catalyst 14.0+, macOS 11.0+, tvOS 14.0+]
path: mlcompute/mlcreductionlayer/dimension
---

# dimension

The dimension to perform the reduction operation on.

## Declaration

```swift
var dimension: Int { get }
```

## See Also

### Inspecting Reduction Layers

- [reductionType](mlcompute/mlcreductionlayer/reductiontype.md)
- [dimensions](mlcompute/mlcreductionlayer/dimensions-9oph6.md)