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# MPSMatrixDescriptor

A description of attributes used to create an MPS matrix.

```
class MPSMatrixDescriptor
```

## Overview

Matrix data is assumed to be stored in row-major order.

## Topics

### Initializers

[`init(rows:columns:matrices:rowBytes:matrixBytes:dataType:)`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/init(rows:columns:matrices:rowBytes:matrixBytes:dataType:))

[`init(rows:columns:rowBytes:dataType:)`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/init(rows:columns:rowBytes:dataType:))

### Methods

[`init(dimensions:columns:rowBytes:dataType:)`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/init(dimensions:columns:rowBytes:dataType:))

Creates a matrix descriptor with the specified dimensions and data type.

[`rowBytes(fromColumns:dataType:)`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/rowBytes(fromColumns:dataType:))

Determines the recommended matrix row stride, in bytes, for a given number of columns.

[`rowBytes(forColumns:dataType:)`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/rowBytes(forColumns:dataType:))

### Properties

[`rows`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/rows)

The number of rows in the matrix.

[`columns`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/columns)

The number of columns in the matrix.

[`dataType`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/dataType)

The type of the values in the matrix.

[`MPSDataType`](/documentation/MetalPerformanceShaders/MPSDataType)

A value to specify a type of data.

[`rowBytes`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/rowBytes)

The stride, in bytes, between corresponding elements of consecutive rows in the matrix.

[`matrices`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/matrices)

[`matrixBytes`](/documentation/MetalPerformanceShaders/MPSMatrixDescriptor/matrixBytes)


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