---
title: "clone | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Function clone

-   clone(a: [ReadonlyMat4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ReadonlyMat4/)): [mat4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.mat4/)[](#clone)
    
    Creates a new mat4 initialized with values from an existing matrix
    
    #### Parameters
    
    -   a: [ReadonlyMat4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ReadonlyMat4/)
        
        matrix to clone
        
    
    #### Returns [mat4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.mat4/)
    
    a new 4x4 matrix