npm package: @stdlib/array-base-flipud2d
Description: Reverse the order of elements along the first dimension of a two-dimensional nested input array.
Author: The Stdlib Authors
Latest version: 0.2.3

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# flipud2d

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

> Reverse the order of elements along the first dimension of a two-dimensional nested input array.

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<section class="intro">

</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/array-base-flipud2d
```

</section>

<section class="usage">

## Usage

```javascript
var flipud2d = require( '@stdlib/array-base-flipud2d' );
```

#### flipud2d( x )

Reverses the order of elements along the first dimension of a two-dimensional nested input array.

```javascript
var out = flipud2d( [ [ 1, 2 ], [ 3, 4 ] ] );
// returns [ [ 3, 4 ], [ 1, 2 ] ]
```

</section>

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<section class="notes">

</section>

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<!-- Package usage examples. -->

<section class="examples">

## Examples

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

```javascript
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' ).factory;
var filled2dBy = require( '@stdlib/array-base-filled2d-by' );
var flipud2d = require( '@stdlib/array-base-flipud2d' );

var x = filled2dBy( [ 3, 3 ], discreteUniform( -50, 50 ) );
console.log( x );

var y = flipud2d( x );
console.log( y );
```

</section>

<!-- /.examples -->

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* * *

## See Also

-   <span class="package-name">[`@stdlib/array-base/flipud3d`][@stdlib/array/base/flipud3d]</span><span class="delimiter">: </span><span class="description">reverse the order of elements along the second-to-last dimension of a three-dimensional nested input array.</span>
-   <span class="package-name">[`@stdlib/array-base/flipud4d`][@stdlib/array/base/flipud4d]</span><span class="delimiter">: </span><span class="description">reverse the order of elements along the second-to-last dimension of a four-dimensional nested input array.</span>
-   <span class="package-name">[`@stdlib/array-base/flipud5d`][@stdlib/array/base/flipud5d]</span><span class="delimiter">: </span><span class="description">reverse the order of elements along the second-to-last dimension of a five-dimensional nested input array.</span>

</section>

<!-- /.related -->

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* * *

## 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

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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[npm-url]: https://npmjs.org/package/@stdlib/array-base-flipud2d

[test-image]: https://github.com/stdlib-js/array-base-flipud2d/actions/workflows/test.yml/badge.svg?branch=v0.2.3
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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-flipud2d/tree/deno
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/array-base-flipud2d/main/LICENSE

<!-- <related-links> -->

[@stdlib/array/base/flipud3d]: https://www.npmjs.com/package/@stdlib/array-base-flipud3d

[@stdlib/array/base/flipud4d]: https://www.npmjs.com/package/@stdlib/array-base-flipud4d

[@stdlib/array/base/flipud5d]: https://www.npmjs.com/package/@stdlib/array-base-flipud5d

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