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53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
/**
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* @author bwhitn [brian.m.whitney@outlook.com]
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* @author d98762625 [d98762625@gmail.com]
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* @copyright Crown Copyright 2018
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* @license Apache-2.0
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*/
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import BigNumber from "bignumber.js";
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import Operation from "../Operation.mjs";
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import { stdDev, createNumArray } from "../lib/Arithmetic.mjs";
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import { ARITHMETIC_DELIM_OPTIONS } from "../lib/Delim.mjs";
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/**
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* Standard Deviation operation
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*/
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class StandardDeviation extends Operation {
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/**
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* StandardDeviation constructor
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*/
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constructor() {
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super();
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this.name = "Standard Deviation";
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this.module = "Default";
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this.description = "Computes the standard deviation of a number list. If an item in the string is not a number it is excluded from the list.<br><br>e.g. <code>0x0a 8 .5</code> becomes <code>4.089281382128433</code>";
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this.infoURL = "https://wikipedia.org/wiki/Standard_deviation";
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this.inputType = "string";
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this.outputType = "BigNumber";
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this.args = [
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{
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"name": "Delimiter",
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"type": "option",
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"value": ARITHMETIC_DELIM_OPTIONS,
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}
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];
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}
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/**
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* @param {string} input
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* @param {Object[]} args
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* @returns {BigNumber}
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*/
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run(input, args) {
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const val = stdDev(createNumArray(input, args[0]));
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return BigNumber.isBigNumber(val) ? val : new BigNumber(NaN);
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}
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}
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export default StandardDeviation;
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