npm package: @stdlib/ndarray-to-json
Description: Serialize an ndarray as a JSON object.
Author: The Stdlib Authors
Latest version: 0.1.1

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    About stdlib...
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# ndarray2json

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

> Serialize an [ndarray][@stdlib/ndarray/ctor] as a JSON object.

<!-- 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/ndarray-to-json
```

</section>

<section class="usage">

## Usage

```javascript
var ndarray2json = require( '@stdlib/ndarray-to-json' );
```

#### ndarray2json( x )

Serializes an [ndarray][@stdlib/ndarray/ctor] as a JSON object.

```javascript
var ndarray = require( '@stdlib/ndarray-ctor' );

var buffer = [ 1, 2, 3, 4 ];
var shape = [ 2, 2 ];
var order = 'row-major';
var strides = [ 2, 1 ];
var offset = 0;

var x = ndarray( 'generic', buffer, shape, strides, offset, order );
// returns <ndarray>

var out = ndarray2json( x );
// returns { 'type': 'ndarray', 'dtype': 'generic', 'flags': {...}, 'offset': 0, 'order': 'row-major', 'shape': [ 3, 2 ], 'strides': [ 2, 1 ], 'data': [ 1.0, 2.0, 3.0, 4.0 ] }
```

</section>

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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

## Notes

-   The function does **not** serialize data outside of the buffer defined by the [ndarray][@stdlib/ndarray/ctor] view.

</section>

<!-- /.notes -->

<!-- Package usage examples. -->

<section class="examples">

## Examples

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

```javascript
var shape2strides = require( '@stdlib/ndarray-base-shape2strides' );
var strides2offset = require( '@stdlib/ndarray-base-strides2offset' );
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' );
var zeroTo = require( '@stdlib/array-base-zero-to' );
var ndarray = require( '@stdlib/ndarray-ctor' );
var ndarray2json = require( '@stdlib/ndarray-to-json' );

// Create a data buffer:
var buffer = zeroTo( 27 );

// Specify array meta data:
var shape = [ 3, 3, 3 ];
var order = 'column-major';
var ndims = shape.length;

// Compute array meta data:
var strides = shape2strides( shape, order );
var offset = strides2offset( shape, strides );

// Print array information:
console.log( '' );
console.log( 'Dims: %s', shape.join( 'x' ) );

// Randomly flip strides and convert an ndarray to JSON...
var arr;
var i;
for ( i = 0; i < 20; i++ ) {
    strides[ discreteUniform( 0, ndims-1 ) ] *= -1;
    offset = strides2offset( shape, strides );

    console.log( '' );
    console.log( 'Strides: %s', strides.join( ',' ) );
    console.log( 'Offset: %d', offset );

    arr = ndarray( 'generic', buffer, shape, strides, offset, order );
    console.log( JSON.stringify( ndarray2json( arr ) ) );
}
```

</section>

<!-- /.examples -->

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</section>

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<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/ndarray-array`][@stdlib/ndarray/array]</span><span class="delimiter">: </span><span class="description">multidimensional arrays.</span>
-   <span class="package-name">[`@stdlib/ndarray-ctor`][@stdlib/ndarray/ctor]</span><span class="delimiter">: </span><span class="description">multidimensional array constructor.</span>
-   <span class="package-name">[`@stdlib/ndarray-to-array`][@stdlib/ndarray/to-array]</span><span class="delimiter">: </span><span class="description">convert an ndarray to a generic array.</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/ndarray/ctor]: https://www.npmjs.com/package/@stdlib/ndarray-ctor

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