npm package: @stdlib/stats-iter-midrange
Description: Compute the mid-range of all iterated values.
Author: The Stdlib Authors
Latest version: 0.2.3

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<details>
  <summary>
    About stdlib...
  </summary>
  <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>
  <p>The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.</p>
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</details>

# itermidrange

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

> Compute the [mid-range][mid-range] of all [iterated][mdn-iterator-protocol] values.

<section class="intro">

The [**mid-range**][mid-range], or **mid-extreme**, is the arithmetic mean of maximum and minimum values. Accordingly, the [mid-range][mid-range] is the midpoint of the [range][range] and a measure of central tendency.

</section>

<!-- /.intro -->

<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/stats-iter-midrange
```

</section>

<section class="usage">

## Usage

```javascript
var itermidrange = require( '@stdlib/stats-iter-midrange' );
```

#### itermidrange( iterator )

Computes the [mid-range][mid-range] of all [iterated][mdn-iterator-protocol] values.

```javascript
var array2iterator = require( '@stdlib/array-to-iterator' );

var arr = array2iterator( [ 1.0, -2.0, 3.0, -4.0 ] );

var v = itermidrange( arr );
// returns -0.5
```

</section>

<!-- /.usage -->

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

<section class="notes">

## Notes

-   If an iterated value is non-numeric (including `NaN`), the returned [`iterator`][mdn-iterator-protocol] returns `NaN`. If non-numeric iterated values are possible, you are advised to provide an [`iterator`][mdn-iterator-protocol] which type checks and handles non-numeric values accordingly.

</section>

<!-- /.notes -->

<!-- Package usage examples. -->

<section class="examples">

## Examples

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

```javascript
var runif = require( '@stdlib/random-iter-uniform' );
var itermidrange = require( '@stdlib/stats-iter-midrange' );

// Create an iterator for generating uniformly distributed pseudorandom numbers:
var rand = runif( -10.0, 10.0, {
    'seed': 1234,
    'iter': 100
});

// Compute the mid-range:
var v = itermidrange( rand );
// returns <number>

console.log( 'mid-range: %d.', v );
```

</section>

<!-- /.examples -->

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<section class="references">

</section>

<!-- /.references -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/stats-iter/mean`][@stdlib/stats/iter/mean]</span><span class="delimiter">: </span><span class="description">compute the arithmetic mean over all iterated values.</span>
-   <span class="package-name">[`@stdlib/stats-iter/max`][@stdlib/stats/iter/max]</span><span class="delimiter">: </span><span class="description">compute the maximum value of all iterated values.</span>
-   <span class="package-name">[`@stdlib/stats-iter/min`][@stdlib/stats/iter/min]</span><span class="delimiter">: </span><span class="description">compute the minimum value of all iterated values.</span>
-   <span class="package-name">[`@stdlib/stats-iter/range`][@stdlib/stats/iter/range]</span><span class="delimiter">: </span><span class="description">compute the range of all iterated values.</span>

</section>

<!-- /.related -->

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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].

</section>

<!-- /.stdlib -->

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<section class="links">

[npm-image]: http://img.shields.io/npm/v/@stdlib/stats-iter-midrange.svg
[npm-url]: https://npmjs.org/package/@stdlib/stats-iter-midrange

[test-image]: https://github.com/stdlib-js/stats-iter-midrange/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/stats-iter-midrange/actions/workflows/test.yml?query=branch:v0.2.3

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

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[stdlib]: https://github.com/stdlib-js/stdlib

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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/stats-iter-midrange/tree/deno
[deno-readme]: https://github.com/stdlib-js/stats-iter-midrange/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/stats-iter-midrange/tree/umd
[umd-readme]: https://github.com/stdlib-js/stats-iter-midrange/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/stats-iter-midrange/tree/esm
[esm-readme]: https://github.com/stdlib-js/stats-iter-midrange/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/stats-iter-midrange/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/stats-iter-midrange/main/LICENSE

[range]: https://en.wikipedia.org/wiki/Range_%28statistics%29

[mid-range]: https://en.wikipedia.org/wiki/Mid-range

[mdn-iterator-protocol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterator_protocol

<!-- <related-links> -->

[@stdlib/stats/iter/mean]: https://www.npmjs.com/package/@stdlib/stats-iter-mean

[@stdlib/stats/iter/max]: https://www.npmjs.com/package/@stdlib/stats-iter-max

[@stdlib/stats/iter/min]: https://www.npmjs.com/package/@stdlib/stats-iter-min

[@stdlib/stats/iter/range]: https://www.npmjs.com/package/@stdlib/stats-iter-range

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</section>

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