---
title: USDValue.Matrix4d
framework: usdkit
role: symbol
role_heading: Structure
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: usdkit/usdvalue/matrix4d
---

# USDValue.Matrix4d

A 4x4 matrix of double-precision floating-point values.

## Declaration

```swift
@frozen struct Matrix4d
```

## Topics

### Initializers

- [init(_:)](usdkit/usdvalue/matrix4d/init(_:)-6b27q.md)
- [init(_:)](usdkit/usdvalue/matrix4d/init(_:)-9y0w7.md)
- [init(_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:)](usdkit/usdvalue/matrix4d/init(_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:_:).md)
- [init(diagonal:)](usdkit/usdvalue/matrix4d/init(diagonal:).md)

### Instance Properties

- [projectiveTransform](usdkit/usdvalue/matrix4d/projectivetransform.md)

### Subscripts

- [subscript(_:)](usdkit/usdvalue/matrix4d/subscript(_:).md)
- [subscript(column:)](usdkit/usdvalue/matrix4d/subscript(column:).md)

### Type Aliases

- [USDValue.Matrix4d.VectorType](usdkit/usdvalue/matrix4d/vectortype.md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Copyable](swift/copyable.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)
- [USDPrim.Attribute.MetadataValue](usdkit/usdprim/attribute/metadatavalue.md)
- [USDPrim.Attribute.Value](usdkit/usdprim/attribute/value.md)
- [USDValueProtocol](usdkit/usdvalueprotocol.md)