# init(rowCount:columnCount:columnStride:attributes:data:) Creates a new matrix of single-precision values. ``` init(rowCount: Int32, columnCount: Int32, columnStride: Int32, attributes: SparseAttributes_t, data: UnsafeMutablePointer) ``` ## Parameters `rowCount` The number of rows in the matrix. `columnCount` The number of columns in the matrix. `columnStride` The column stride of the matrix. `attributes` The attributes of the matrix, such as whether it’s symmetrical or triangular. `data` The array of single-precision, floating-point values in column-major order. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)