npm package: @stdlib/ndarray-reverse-dimension
Description: Return a read-only view of an input ndarray in which the order of elements along a specified dimension is reversed.
Author: The Stdlib Authors
Latest version: 0.1.1

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# reverseDimension

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

> Return a **read-only** view of an input [`ndarray`][@stdlib/ndarray/ctor] in which the order of elements along a specified dimension is reversed.

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</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-reverse-dimension
```

</section>

<section class="usage">

## Usage

```javascript
var reverseDimension = require( '@stdlib/ndarray-reverse-dimension' );
```

#### reverseDimension( x, dim )

Returns a read-only view of an input [`ndarray`][@stdlib/ndarray/ctor] in which the order of elements along a specified dimension is reversed.

```javascript
var array = require( '@stdlib/ndarray-array' );
var ndarray2array = require( '@stdlib/ndarray-to-array' );

var x = array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 ], {
    'shape': [ 3, 2 ]
});
// returns <ndarray>

var arr = ndarray2array( x );
// returns [ [ 1.0, 2.0 ], [ 3.0, 4.0 ], [ 5.0, 6.0 ] ]

var y = reverseDimension( x, 0 );
// returns <ndarray>

arr = ndarray2array( y );
// returns [ [ 5.0, 6.0 ], [ 3.0, 4.0 ], [ 1.0, 2.0 ] ]
```

The function accepts the following arguments:

-   **x**: input ndarray.
-   **dim**: index of dimension along which to reverse elements. If provided an integer less than zero, the dimension index is resolved relative to the last dimension, with the last dimension corresponding to the value `-1`.

</section>

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</section>

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<section class="examples">

## Examples

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

```javascript
var uniform = require( '@stdlib/random-uniform' );
var ndarray2array = require( '@stdlib/ndarray-to-array' );
var reverseDimension = require( '@stdlib/ndarray-reverse-dimension' );

var x = uniform( [ 3, 3, 3 ], -10.0, 10.0 );
console.log( ndarray2array( x ) );

var y = reverseDimension( x, 0 );
console.log( ndarray2array( y ) );
```

</section>

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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

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

---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/ndarray-reverse-dimension/main/LICENSE

[@stdlib/ndarray/ctor]: https://www.npmjs.com/package/@stdlib/ndarray-ctor

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