TypeScript icon, indicating that this package has built-in type declarations

0.1.0 • Public • Published
About stdlib...

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.

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.

When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.

To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!


NPM version Build Status Coverage Status

Compute a minimum and maximum incrementally.


npm install @stdlib/stats-incr-minmax


var incrminmax = require( '@stdlib/stats-incr-minmax' );

incrminmax( [out] )

Returns an accumulator function which incrementally computes a minimum and maximum.

var accumulator = incrminmax();

By default, the returned accumulator function returns the minimum and maximum as a two-element array. To avoid unnecessary memory allocation, the function supports providing an output (destination) object.

var Float64Array = require( '@stdlib/array-float64' );

var accumulator = incrminmax( new Float64Array( 2 ) );

accumulator( [x] )

If provided an input value x, the accumulator function returns updated minimum and maximum values. If not provided an input value x, the accumulator function returns the current minimum and maximum values.

var accumulator = incrminmax();

var mm = accumulator();
// returns null

mm = accumulator( 2.0 );
// returns [ 2.0, 2.0 ]

mm = accumulator( 1.0 );
// returns [ 1.0, 2.0 ]

mm = accumulator( 3.0 );
// returns [ 1.0, 3.0 ]

mm = accumulator( -7.0 );
// returns [ -7.0, 3.0 ]

mm = accumulator( -5.0 );
// returns [ -7.0, 3.0 ]

mm = accumulator();
// returns [ -7.0, 3.0 ]


  • Input values are not type checked. If provided NaN, the accumulated values are equal to NaN for all future invocations. If non-numeric inputs are possible, you are advised to type check and handle accordingly before passing the value to the accumulator function.


var randu = require( '@stdlib/random-base-randu' );
var incrminmax = require( '@stdlib/stats-incr-minmax' );

var accumulator;
var v;
var i;

// Initialize an accumulator:
accumulator = incrminmax();

// For each simulated datum, update the minimum and maximum...
for ( i = 0; i < 100; i++ ) {
    v = randu() * 100.0;
    accumulator( v );
console.log( accumulator() );

See Also


This package is part of 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, see the main project repository.





Copyright © 2016-2023. The Stdlib Authors.

Package Sidebar


npm i @stdlib/stats-incr-minmax



Weekly Downloads






Unpacked Size

33.9 kB

Total Files


Last publish


  • stdlib-bot
  • kgryte
  • planeshifter
  • rreusser