# init(input:length:stride:) Creates a sliding windows sequence. ``` init(input: MLShapedArray, length: Int, stride: Int = 1) throws ``` ## Parameters `input` A shaped array having two dimensions. `length` The number of samples in each window. Must be positive. `stride` The number of samples between windows. Must be positive. Defaults to 1. --- 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)