---
title: vector
framework: simd
role: symbol
role_heading: Instance Property
path: simd/simd_quatd/vector
---

# vector

The underlying vector of the quaternion.

## Declaration

```swift
var vector: simd_double4
```

## See Also

### Querying a quaternion’s properties

- [angle](simd/simd_quatd/angle.md)
- [axis](simd/simd_quatd/axis.md)
- [conjugate](simd/simd_quatd/conjugate.md)
- [imag](simd/simd_quatd/imag.md)
- [real](simd/simd_quatd/real.md)
- [inverse](simd/simd_quatd/inverse.md)
- [length](simd/simd_quatd/length.md)
- [normalized](simd/simd_quatd/normalized.md)