npm package: @stdlib/array-base-take-indexed2
Description: Take elements from two indexed arrays in a single pass.
Author: The Stdlib Authors
Latest version: 0.1.1

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# takeIndexed2

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> Take elements from two indexed arrays in a single pass.

<section class="installation">

## Installation

```bash
npm install @stdlib/array-base-take-indexed2
```

</section>

<section class="usage">

## Usage

```javascript
var takeIndexed2 = require( '@stdlib/array-base-take-indexed2' );
```

#### takeIndexed2( x, y, indices )

Takes elements from two indexed arrays in a single pass.

```javascript
var x = [ 1, 2, 3, 4 ];
var y = [ 5, 6, 7, 8 ];

var out = takeIndexed2( x, y, [ 1, 3 ] );
// returns [ [ 2, 4 ], [ 6, 8 ] ]
```

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

```javascript
var x = [ 1, 2, 3, 4 ];
var y = [ 5, 6, 7, 8 ];

var out = takeIndexed2( x, y, [] );
// returns [ [], [] ]
```

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   The function does **not** perform bounds checking. If an index is less than zero or greater than the maximum index of `x` or `y`, the value of the corresponding element in the respective output array is undefined.
-   An _indexed_ array-like object is a data structure in which one retrieves elements via integer indices using bracket `[]` notation (e.g., `Float64Array`, `Int32Array`, `Array`, etc). This is in contrast to an _accessor_ array-like object in which one retrieves elements using `get` and `set` methods (e.g., `Complex64Array` and `Complex128Array`).

</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 takeIndexed2 = require( '@stdlib/array-base-take-indexed2' );

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

var y = linspace( 100, 200, 11 );
console.log( y );

// 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` and `y`:
var out = takeIndexed2( x, y, indices );
console.log( out );
```

</section>

<!-- /.examples -->

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<section class="related">

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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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