npm package: @stdlib/array-base-take
Description: Take elements from an array.
Author: The Stdlib Authors
Latest version: 0.3.1

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# take

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

> Take elements from an array.

<section class="installation">

## Installation

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

</section>

<section class="usage">

## Usage

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

#### take( x, indices, mode )

Takes elements from an array.

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

var y = take( x, [ 1, 3 ], 'throw' );
// returns [ 2, 4 ]
```

The function supports the following parameters:

-   **x**: input array.
-   **indices**: list of indices.
-   **mode**: index [mode][@stdlib/ndarray/base/ind].

If `indices` is an empty array, the function returns an empty array.

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

var y = take( x, [], 'throw' );
// returns []
```

#### take.assign( x, indices, mode, out, stride, offset )

Takes elements from an array and assigns the values to elements in a provided output array.

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

var out = [ 0, 0, 0, 0, 0, 0 ];
var indices = [ 0, 0, 1, 1, 3, 3 ];

var arr = take.assign( x, indices, 'throw', out, -1, out.length-1 );
// returns [ 4, 4, 2, 2, 1, 1 ]

var bool = ( arr === out );
// returns true
```

The function supports the following parameters:

-   **x**: input array.
-   **indices**: list of indices.
-   **mode**: index [mode][@stdlib/ndarray/base/ind].
-   **out**: output array.
-   **stride**: output array stride.
-   **offset**: output array offset.

</section>

<!-- /.usage -->

<section class="notes">

</section>

<!-- /.notes -->

<section class="examples">

## Examples

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

```javascript
var filledBy = require( '@stdlib/array-base-filled-by' );
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' );
var linspace = require( '@stdlib/array-base-linspace' );
var take = require( '@stdlib/array-base-take' );

// Generate a linearly spaced array:
var x = linspace( 0, 100, 11 );
console.log( x );

// Generate an array of random indices:
var N = discreteUniform( 5, 15 );
var indices = filledBy( N, discreteUniform.factory( 0, x.length-1 ) );
console.log( indices );

// Take a random sample of elements from `x`:
var y = take( x, indices, 'throw' );
console.log( y );
```

</section>

<!-- /.examples -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<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>

<!-- /.stdlib -->

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

[test-image]: https://github.com/stdlib-js/array-base-take/actions/workflows/test.yml/badge.svg?branch=v0.3.1
[test-url]: https://github.com/stdlib-js/array-base-take/actions/workflows/test.yml?query=branch:v0.3.1

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

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

[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors

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

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

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

</section>

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