---
title: r
framework: vision
role: symbol
role_heading: Instance Property
path: vision/vnvector/r
---

# r

The radius, absolute value, or length of the vector.

## Declaration

```swift
var r: Double { get }
```

## See Also

### Inspecting a Vector

- [length](vision/vnvector/length.md)
- [theta](vision/vnvector/theta.md)
- [squaredLength](vision/vnvector/squaredlength.md)
- [x](vision/vnvector/x.md)
- [y](vision/vnvector/y.md)
- [dotProduct(of:vector:)](vision/vnvector/dotproduct(of:vector:).md)
- [unitVector(for:)](vision/vnvector/unitvector(for:).md)