npm package: @stdlib/ndarray-with
Description: Returns a new ndarray with the element at a specified index replaced by a provided value.
Author: The Stdlib Authors
Latest version: 0.1.1

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# ndarrayWith

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

> Return a new [ndarray][@stdlib/ndarray/ctor] with the element at a specified index replaced by a provided value.

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<section class="intro">

</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-with
```

</section>

<section class="usage">

## Usage

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

#### ndarrayWith( x, indices, value )

Returns a new [ndarray][@stdlib/ndarray/ctor] with the element at a specified index replaced by a provided value.

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

var x = zeros( [ 2, 2 ], {
    'dtype': 'float64'
});
// returns <ndarray>

var out = ndarrayWith( x, [ 0, 0 ], 1.0 );
// returns <ndarray>

var v = out.get( 0, 0 );
// returns 1.0
```

The function accepts the following arguments:

-   **x**: input [ndarray][@stdlib/ndarray/ctor].
-   **indices**: indices of the element to replace.
-   **value**: replacement value.

</section>

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<section class="notes">

## Notes

-   This function does not validate that a provided `value` is compatible with the data type of the input [ndarray][@stdlib/ndarray/ctor]. For example, the function does not guard against precision loss when `value` is a real-valued number and the input [ndarray][@stdlib/ndarray/ctor] has an integer data type. This function should be considered a copy-on-write analog to using an [ndarray][@stdlib/ndarray/ctor]'s `set` method. Whether a `value` is silently coerced to the data type of the input [ndarray][@stdlib/ndarray/ctor] or triggers an exception when incompatible is implementation-dependent. Accordingly, any assertion logic ensuring data type compatibility should be performed **before** calling this function.

</section>

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<section class="examples">

## Examples

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

```javascript
var zeros = require( '@stdlib/ndarray-zeros' );
var ndarray2array = require( '@stdlib/ndarray-to-array' );
var ndarrayWith = require( '@stdlib/ndarray-with' );

var x = zeros( [ 1, 3, 3 ], {
    'dtype': 'float64'
});

var out = ndarrayWith( x, [ 0, 1, 1 ], 10.0 );
console.log( ndarray2array( out ) );
```

</section>

<!-- /.examples -->

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* * *

## 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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[npm-url]: https://npmjs.org/package/@stdlib/ndarray-with

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[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/ndarray-with/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/ndarray-with?branch=main

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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/ndarray-with/tree/deno
[deno-readme]: https://github.com/stdlib-js/ndarray-with/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/ndarray-with/tree/umd
[umd-readme]: https://github.com/stdlib-js/ndarray-with/blob/umd/README.md
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/ndarray-with/main/LICENSE

[@stdlib/ndarray/ctor]: https://www.npmjs.com/package/@stdlib/ndarray-ctor

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