sma

Calculate the simple moving average of an array.

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Install

Install with npm:

$ npm install --save sma

Usage

var sma = require('sma');

API

sma

Calculate the simple moving average of an array. A new array is returned with the average of each range of elements. A range will only be calculated when it contains enough elements to fill the range.

Params

• arr {Array}: Array of numbers to calculate.
• range {Number}: Size of the window to use to when calculating the average for each range. Defaults to array length.
• format {Function}: Custom format function called on each calculated average. Defaults to n.toFixed(2).
• returns {Array}: Resulting array of averages.

Example

console.log(sma([1, 2, 3, 4, 5, 6, 7, 8, 9], 4));
//=> [ '2.50', '3.50', '4.50', '5.50', '6.50', '7.50' ]
//=>   │       │       │       │       │       └─(6+7+8+9)/4
//=>   │       │       │       │       └─(5+6+7+8)/4
//=>   │       │       │       └─(4+5+6+7)/4
//=>   │       │       └─(3+4+5+6)/4
//=>   │       └─(2+3+4+5)/4
//=>   └─(1+2+3+4)/4

Attribution

Thanks to @jonschlinkert for simplifying the algorithm. For more moving average modules checkout the related projects below.

About

$ npm install && npm test

$ npm install -g verbose/verb#dev verb-generate-readme && verb

Related projects

You might also be interested in these projects:

exponential-moving-average: Calculate an exponential moving average from an array of numbers. | homepage

Author

Brian Woodward

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• LinkedIn Profile

License

Copyright © 2018, Brian Woodward. Released under the MIT License.

This file was generated by verb-generate-readme, v0.8.0, on September 12, 2018.