npm package: @stdlib/ndarray-base-reverse
Description: Return a view of an input ndarray in which the order of elements along each dimension is reversed.
Author: The Stdlib Authors
Latest version: 0.3.1

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    About stdlib...
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# reverse

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> Return a view of an input ndarray in which the order of elements along each dimension is reversed.

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<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

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

</section>

<section class="usage">

## Usage

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

#### reverse( x, writable )

Returns a view of an input ndarray in which the order of elements along each dimension is reversed.

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

var buffer = [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 ];
var shape = [ 3, 2 ];
var strides = [ 2, 1 ];
var offset = 0;

var x = ndarray( 'generic', buffer, shape, strides, offset, 'row-major' );
// returns <ndarray>

var sh = x.shape;
// returns [ 3, 2 ]

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

var y = reverse( x, false );
// returns <ndarray>

sh = y.shape;
// returns [ 3, 2 ]

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

The function accepts the following arguments:

-   **x**: input ndarray.
-   **writable**: boolean indicating whether a returned ndarray should be writable.

</section>

<!-- /.usage -->

<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

## Notes

-   The `writable` parameter **only** applies to ndarray constructors supporting **read-only** instances.

</section>

<!-- /.notes -->

<!-- Package usage examples. -->

<section class="examples">

## Examples

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

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

// Create a linear ndarray buffer:
var buf = zeroTo( 16 );

// Create a one-dimensional ndarray:
var x1 = array( buf, {
    'shape': [ 16 ]
});

// Reverse element order:
var y1 = reverse( x1, false );
// returns <ndarray>

var a1 = ndarray2array( y1 );
// returns [ 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 ]

// Create a two-dimensional ndarray:
var x2 = array( buf, {
    'shape': [ 4, 4 ]
});

// Reverse element order:
var y2 = reverse( x2, false );
// returns <ndarray>

var a2 = ndarray2array( y2 );
// returns [ [ 15, 14, 13, 12 ], [ 11, 10, 9, 8 ], [ 7, 6, 5, 4 ], [ 3, 2, 1, 0 ] ]

// Create a three-dimensional ndarray:
var x3 = array( buf, {
    'shape': [ 2, 4, 2 ]
});

// Reverse element order:
var y3 = reverse( x3, false );
// returns <ndarray>

var a3 = ndarray2array( y3 );
// returns [ [ [ 15, 14 ], [ 13, 12 ], [ 11, 10 ], [ 9, 8 ] ], [ [ 7, 6 ], [ 5, 4 ], [ 3, 2 ], [ 1, 0 ] ] ]
```

</section>

<!-- /.examples -->

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<section class="references">

</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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