npm package: @stdlib/array-base-ones2d
Description: Create a two-dimensional nested array filled with ones.
Author: The Stdlib Authors
Latest version: 0.2.3

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    About stdlib...
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  <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p>
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# ones2d

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> Create a two-dimensional nested array filled with ones.

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<section class="intro">

</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/array-base-ones2d
```

</section>

<section class="usage">

## Usage

```javascript
var ones2d = require( '@stdlib/array-base-ones2d' );
```

#### ones2d( shape )

Returns a two-dimensional nested array filled with ones.

```javascript
var out = ones2d( [ 2, 3 ] );
// returns [ [ 1.0, 1.0, 1.0 ], [ 1.0, 1.0, 1.0 ] ]
```

</section>

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</section>

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<section class="examples">

## Examples

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

```javascript
var gscal = require( '@stdlib/blas-base-gscal' );
var ones2d = require( '@stdlib/array-base-ones2d' );

// Create a ones-filled array:
var arr = ones2d( [ 5, 10 ] );

// Scale element values...
gscal( arr[ 0 ].length, 2.0, arr[ 0 ], 1 );
gscal( arr[ 1 ].length, 3.0, arr[ 1 ], 1 );
gscal( arr[ 2 ].length, 4.0, arr[ 2 ], 1 );
gscal( arr[ 3 ].length, 5.0, arr[ 3 ], 1 );
gscal( arr[ 4 ].length, 6.0, arr[ 4 ], 1 );

console.log( arr );
// => [ [ 2.0, 2.0, ... ], [ 3.0, 3.0, ... ], [ 4.0, 4.0, ... ], [ 5.0, 5.0, ... ], [ 6.0, 6.0, ... ] ]
```

</section>

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* * *

## See Also

-   <span class="package-name">[`@stdlib/array-base/zeros2d`][@stdlib/array/base/zeros2d]</span><span class="delimiter">: </span><span class="description">create a zero-filled two-dimensional nested array.</span>
-   <span class="package-name">[`@stdlib/array-base/ones`][@stdlib/array/base/ones]</span><span class="delimiter">: </span><span class="description">create a generic array filled with ones.</span>
-   <span class="package-name">[`@stdlib/array-base/ones3d`][@stdlib/array/base/ones3d]</span><span class="delimiter">: </span><span class="description">create a three-dimensional nested array filled with ones.</span>
-   <span class="package-name">[`@stdlib/array-base/ones4d`][@stdlib/array/base/ones4d]</span><span class="delimiter">: </span><span class="description">create a four-dimensional nested array filled with ones.</span>
-   <span class="package-name">[`@stdlib/array-base/ones5d`][@stdlib/array/base/ones5d]</span><span class="delimiter">: </span><span class="description">create a five-dimensional nested array filled with ones.</span>
-   <span class="package-name">[`@stdlib/array-base/onesnd`][@stdlib/array/base/onesnd]</span><span class="delimiter">: </span><span class="description">create an n-dimensional nested array filled with ones.</span>

</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

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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[@stdlib/array/base/zeros2d]: https://www.npmjs.com/package/@stdlib/array-base-zeros2d

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