npm package: @stdlib/array-base-reshape
Description: Reshape a nested array into another nested array having a desired shape.
Author: The Stdlib Authors
Latest version: 0.1.1

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# reshape

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Reshape a nested array into another nested array having a desired shape.

<section class="installation">

## Installation

```bash
npm install @stdlib/array-base-reshape
```

</section>

<section class="usage">

## Usage

```javascript
var reshape = require( '@stdlib/array-base-reshape' );
```

#### reshape( x, fromShape, toShape, colexicographic )

Reshapes a nested array into another nested array having a desired shape.

```javascript
var x = [ [ 1, 2, 3 ], [ 4, 5, 6 ] ];

var out = reshape( x, [ 2, 3 ], [ 3, 2 ], false );
// returns [ [ 1, 2 ], [ 3, 4 ], [ 5, 6 ] ]
```

-   **x**: input array.
-   **fromShape**: input array shape.
-   **toShape**: output array shape.
-   **colexicographic**: boolean indicating whether to reshape the array in colexicographic order.

To reshape in colexicographic order, set the `colexicographic` argument to `true`.

```javascript
var x = [ [ 1, 2, 3 ], [ 4, 5, 6 ] ];

var out = reshape( x, [ 2, 3 ], [ 3, 2 ], true );
// [ [ 1, 4 ], [ 2, 5 ], [ 3, 6 ] ]
```

</section>

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<section class="notes">

## Notes

-   The function assumes that `fromShape` and `toShape` describe arrays having the same number of elements.

</section>

<!-- /.notes -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var reshape = require( '@stdlib/array-base-reshape' );

var x = [
    [ 1, 2, 3, 4 ],
    [ 5, 6, 7, 8 ],
    [ 9, 10, 11, 12 ]
];

var out = reshape( x, [ 3, 4 ], [ 4, 3 ], false );
// returns [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ], [ 10, 11, 12 ] ]

out = reshape( x, [ 3, 4 ], [ 6, 2 ], false );
// returns [ [ 1, 2 ], [ 3, 4 ], [ 5, 6 ], [ 7, 8 ], [ 9, 10 ], [ 11, 12 ] ]

out = reshape( x, [ 3, 4 ], [ 1, 12 ], false );
// returns [ [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ] ]

out = reshape( x, [ 3, 4 ], [ 12, 1 ], false );
// returns [ [ 1 ], [ 2 ], [ 3 ], [ 4 ], [ 5 ], [ 6 ], [ 7 ], [ 8 ], [ 9 ], [ 10 ], [ 11 ], [ 12 ] ]
```

</section>

<!-- /.examples -->

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<section class="related">

</section>

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<section class="main-repo" >

* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

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[npm-image]: http://img.shields.io/npm/v/@stdlib/array-base-reshape.svg
[npm-url]: https://npmjs.org/package/@stdlib/array-base-reshape

[test-image]: https://github.com/stdlib-js/array-base-reshape/actions/workflows/test.yml/badge.svg?branch=v0.1.1
[test-url]: https://github.com/stdlib-js/array-base-reshape/actions/workflows/test.yml?query=branch:v0.1.1

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/array-base-reshape/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/array-base-reshape?branch=main

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[stdlib]: https://github.com/stdlib-js/stdlib

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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/array-base-reshape/tree/deno
[deno-readme]: https://github.com/stdlib-js/array-base-reshape/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/array-base-reshape/tree/umd
[umd-readme]: https://github.com/stdlib-js/array-base-reshape/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/array-base-reshape/tree/esm
[esm-readme]: https://github.com/stdlib-js/array-base-reshape/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/array-base-reshape/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/array-base-reshape/main/LICENSE

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</section>

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