everyutil/array/timeSeriesDelta.js

A comprehensive library of lightweight, reusable utility functions for JavaScript and TypeScript, designed to streamline common programming tasks such as string manipulation, array processing, date handling, and more.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.timeSeriesDelta = void 0;
/**
 * Finds derivative-like changes in time-based numeric arrays.
 * @author @dailker
 * @param {number[]} array
 * @param {number} [unit=1]
 * @returns {number[]}
 */
function timeSeriesDelta(array, unit = 1) {
    const result = [];
    for (let i = unit; i < array.length; i++) {
        result.push(array[i] - array[i - unit]);
    }
    return result;
}
exports.timeSeriesDelta = timeSeriesDelta;