npm package: @stdlib/array-base-mskfilter2
Description: Apply a mask to two provided input arrays in a single pass.
Author: The Stdlib Authors
Latest version: 0.1.1

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# mskfilter2

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

> Apply a mask to two provided input arrays in a single pass.

<section class="installation">

## Installation

```bash
npm install @stdlib/array-base-mskfilter2
```

</section>

<section class="usage">

## Usage

```javascript
var mskfilter2 = require( '@stdlib/array-base-mskfilter2' );
```

#### mskfilter2( x, y, mask )

Returns new arrays by applying a mask to two provided input arrays in a single pass.

```javascript
var x = [ 1, 2, 3, 4 ];
var y = [ 0, 1, 2, 3 ];

var out = mskfilter2( x, y, [ 0, 1, 0, 1 ] );
// returns [ [ 2, 4 ], [ 1, 3 ] ]
```

The function supports the following parameters:

-   **x**: first input array.
-   **y**: second input array.
-   **mask**: mask array.

The function **always** returns new "generic" arrays.

</section>

<!-- /.usage -->

<section class="notes">

## Notes

-   If a `mask` array element is truthy, the corresponding elements in the input arrays are **included** in the respective output arrays; otherwise, the corresponding elements in the input arrays are "masked" and thus **excluded** from the respective output arrays.

</section>

<!-- /.notes -->

<section class="examples">

## Examples

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

```javascript
var zeroTo = require( '@stdlib/array-base-zero-to' );
var bernoulli = require( '@stdlib/random-array-bernoulli' );
var mskfilter2 = require( '@stdlib/array-base-mskfilter2' );

// Generate linearly spaced arrays:
var x = zeroTo( 20 );
console.log( x );

var y = zeroTo( x.length );
console.log( y );

// Generate a random mask:
var mask = bernoulli( x.length, 0.5, {
    'dtype': 'generic'
});
console.log( mask );

// Filter both arrays using the mask:
var out = mskfilter2( x, y, mask );
console.log( out );
```

</section>

<!-- /.examples -->

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<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].

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