---
title: "init(real:imag:)"
framework: simd
role: symbol
role_heading: Initializer
path: "simd/simd_quatd/init(real:imag:)"
---

# init(real:imag:)

Creates a new quaternion from a scalar real part and a vector imaginary part.

## Declaration

```swift
init(real: Double, imag: SIMD3<Double>)
```

## Parameters

- `real`: A scalar value that specifies the real part of the quaternion.
- `imag`: A three-element vector that specifies the imaginary part of the quaternion.

## See Also

### Initializing a quaternion

- [init()](simd/simd_quatd/init().md)
- [init(vector:)](simd/simd_quatd/init(vector:).md)
- [init(_:)](simd/simd_quatd/init(_:)-791zk.md)
- [init(_:)](simd/simd_quatd/init(_:)-5vcd5.md)
- [init(angle:axis:)](simd/simd_quatd/init(angle:axis:).md)
- [init(from:to:)](simd/simd_quatd/init(from:to:).md)
- [init(ix:iy:iz:r:)](simd/simd_quatd/init(ix:iy:iz:r:).md)