npm package: @stdlib/array-shape
Description: Determine (nested) array dimensions.
Author: The Stdlib Authors
Latest version: 0.2.3

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# Array Shape

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

> Determine (nested) array dimensions.

<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->

<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/array-shape
```

</section>

<section class="usage">

## Usage

```javascript
var arrayShape = require( '@stdlib/array-shape' );
```

#### arrayShape( arr )

Returns array dimensions.

```javascript
var arr = [
    [ 1, 2, 3 ],
    [ 4, 5, 6 ],
    [ 7, 8, 9 ]
];

var shape = arrayShape( arr );
// returns [ 3, 3 ]
```

The function **ignores** inconsistent dimensions.

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

var shape = arrayShape( arr );
// returns [ 3 ]
```

</section>

<!-- /.usage -->

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<section class="notes">

</section>

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<section class="examples">

## Examples

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

```javascript
var arrayShape = require( '@stdlib/array-shape' );

var arr = [ 1, 2, 3 ];
var shape = arrayShape( arr );
// returns [ 3 ]

arr = [
    [ 1 ],
    [ 2 ],
    [ 3 ]
];
shape = arrayShape( arr );
// returns [ 3, 1 ]

arr = [
    [],
    [],
    []
];
shape = arrayShape( arr );
// returns [ 3, 0 ]

arr = [
    [ 1, 2, 3 ]
];
shape = arrayShape( arr );
// returns [ 1, 3 ]

arr = [
    [ [ 1 ] ],
    [ [ 2 ] ],
    [ [ 3 ] ]
];
shape = arrayShape( arr );
// returns [ 3, 1, 1 ]

arr = [ [ [ [ 1, 2, 3 ] ] ] ];
shape = arrayShape( arr );
// returns [ 1, 1, 1, 3 ]

arr = [
    [ 1, 2 ],
    [ 3, 4 ]
];
shape = arrayShape( arr );
// returns [ 2, 2 ]

arr = [
    [ 1, 2, 3 ],
    [ 4, 5, 6 ],
    [ 7, 8, 9 ]
];
shape = arrayShape( arr );
// returns [ 3, 3 ]

arr = [
    [ 1, 2, 3 ],
    null,
    [ 7, 8, 9 ]
];
shape = arrayShape( arr );
// returns [ 3 ]

arr = [
    [ 1, 2, 3 ],
    [ [ 4, 5, 6 ] ],
    [ [ 7, 8, 9 ] ]
];
shape = arrayShape( arr );
// returns [ 3 ]

arr = [
    [ [ 1, 2, 3 ] ],
    [ 4, 5, 6 ],
    [ [ 7, 8, 9 ] ]
];
shape = arrayShape( arr );
// returns [ 3 ]

arr = [
    [ [ 1, 2, 3 ] ],
    [ [ 4, 5, 6 ] ],
    [ 7, 8, 9 ]
];
shape = arrayShape( arr );
// returns [ 3 ]

arr = [
    [ [ [ 1, 2, 3 ] ] ],
    [ [ 4, 5, 6 ] ],
    [ [ [ 7, 8, 9 ] ] ]
];
shape = arrayShape( arr );
// returns [ 3, 1 ]
```

</section>

<!-- /.examples -->

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<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/ndarray-ctor`][@stdlib/ndarray/ctor]</span><span class="delimiter">: </span><span class="description">multidimensional array constructor.</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

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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