---
title: "createWeightGradientMatrices(_:dataType:)"
framework: metalperformanceshaders
role: symbol
role_heading: Instance Method
path: "metalperformanceshaders/mpsrnnmatrixtraininglayer/createweightgradientmatrices(_:datatype:)"
---

# createWeightGradientMatrices(_:dataType:)

## Declaration

```swift
func createWeightGradientMatrices(_ matricesOut: NSMutableArray, dataType: MPSDataType)
```