/** * @license Highstock JS v11.2.0 (2023-10-30) * * Indicator series type for Highcharts Stock * * (c) 2010-2021 Rafał Sebestjański * * License: www.highcharts.com/license */ (function (factory) { if (typeof module === 'object' && module.exports) { factory['default'] = factory; module.exports = factory; } else if (typeof define === 'function' && define.amd) { define('highcharts/indicators/dema', ['highcharts', 'highcharts/modules/stock'], function (Highcharts) { factory(Highcharts); factory.Highcharts = Highcharts; return factory; }); } else { factory(typeof Highcharts !== 'undefined' ? Highcharts : undefined); } }(function (Highcharts) { 'use strict'; var _modules = Highcharts ? Highcharts._modules : {}; function _registerModule(obj, path, args, fn) { if (!obj.hasOwnProperty(path)) { obj[path] = fn.apply(null, args); if (typeof CustomEvent === 'function') { window.dispatchEvent(new CustomEvent( 'HighchartsModuleLoaded', { detail: { path: path, module: obj[path] } } )); } } } _registerModule(_modules, 'Stock/Indicators/DEMA/DEMAIndicator.js', [_modules['Core/Series/SeriesRegistry.js'], _modules['Core/Utilities.js']], function (SeriesRegistry, U) { /* * * * License: www.highcharts.com/license * * !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!! * * */ var __extends = (this && this.__extends) || (function () { var extendStatics = function (d, b) { extendStatics = Object.setPrototypeOf || ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; }; return extendStatics(d, b); }; return function (d, b) { if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null"); extendStatics(d, b); function __() { this.constructor = d; } d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); }; })(); var EMAIndicator = SeriesRegistry.seriesTypes.ema; var correctFloat = U.correctFloat, isArray = U.isArray, merge = U.merge; /* * * * Class * * */ /** * The DEMA series Type * * @private * @class * @name Highcharts.seriesTypes.dema * * @augments Highcharts.Series */ var DEMAIndicator = /** @class */ (function (_super) { __extends(DEMAIndicator, _super); function DEMAIndicator() { /* * * * Static Properties * * */ var _this = _super !== null && _super.apply(this, arguments) || this; /* * * * Properties * * */ _this.EMApercent = void 0; _this.data = void 0; _this.options = void 0; _this.points = void 0; return _this; } /* * * * Functions * * */ DEMAIndicator.prototype.getEMA = function (yVal, prevEMA, SMA, index, i, xVal) { return _super.prototype.calculateEma.call(this, xVal || [], yVal, typeof i === 'undefined' ? 1 : i, this.EMApercent, prevEMA, typeof index === 'undefined' ? -1 : index, SMA); }; DEMAIndicator.prototype.getValues = function (series, params) { var period = params.period, EMAvalues = [], doubledPeriod = 2 * period, xVal = series.xData, yVal = series.yData, yValLen = yVal ? yVal.length : 0, DEMA = [], xDataDema = [], yDataDema = []; var accumulatePeriodPoints = 0, EMA = 0, // EMA(EMA) EMAlevel2, // EMA of previous point prevEMA, prevEMAlevel2, // EMA values array i, index = -1, DEMAPoint, SMA = 0; this.EMApercent = (2 / (period + 1)); // Check period, if bigger than EMA points length, skip if (yValLen < 2 * period - 1) { return; } // Switch index for OHLC / Candlestick / Arearange if (isArray(yVal[0])) { index = params.index ? params.index : 0; } // Accumulate first N-points accumulatePeriodPoints = _super.prototype.accumulatePeriodPoints.call(this, period, index, yVal); // first point SMA = accumulatePeriodPoints / period; accumulatePeriodPoints = 0; // Calculate value one-by-one for each period in visible data for (i = period; i < yValLen + 2; i++) { if (i < yValLen + 1) { EMA = this.getEMA(yVal, prevEMA, SMA, index, i)[1]; EMAvalues.push(EMA); } prevEMA = EMA; // Summing first period points for EMA(EMA) if (i < doubledPeriod) { accumulatePeriodPoints += EMA; } else { // Calculate DEMA // First DEMA point if (i === doubledPeriod) { SMA = accumulatePeriodPoints / period; } EMA = EMAvalues[i - period - 1]; EMAlevel2 = this.getEMA([EMA], prevEMAlevel2, SMA)[1]; DEMAPoint = [ xVal[i - 2], correctFloat(2 * EMA - EMAlevel2) ]; DEMA.push(DEMAPoint); xDataDema.push(DEMAPoint[0]); yDataDema.push(DEMAPoint[1]); prevEMAlevel2 = EMAlevel2; } } return { values: DEMA, xData: xDataDema, yData: yDataDema }; }; /** * Double exponential moving average (DEMA) indicator. This series requires * `linkedTo` option to be set and should be loaded after the * `stock/indicators/indicators.js`. * * @sample {highstock} stock/indicators/dema * DEMA indicator * * @extends plotOptions.ema * @since 7.0.0 * @product highstock * @excluding allAreas, colorAxis, compare, compareBase, joinBy, keys, * navigatorOptions, pointInterval, pointIntervalUnit, * pointPlacement, pointRange, pointStart, showInNavigator, * stacking * @requires stock/indicators/indicators * @requires stock/indicators/dema * @optionparent plotOptions.dema */ DEMAIndicator.defaultOptions = merge(EMAIndicator.defaultOptions); return DEMAIndicator; }(EMAIndicator)); SeriesRegistry.registerSeriesType('dema', DEMAIndicator); /* * * * Default Export * * */ /* * * * API Options * * */ /** * A `DEMA` series. If the [type](#series.dema.type) option is not * specified, it is inherited from [chart.type](#chart.type). * * @extends series,plotOptions.dema * @since 7.0.0 * @product highstock * @excluding allAreas, colorAxis, compare, compareBase, dataParser, dataURL, * joinBy, keys, navigatorOptions, pointInterval, pointIntervalUnit, * pointPlacement, pointRange, pointStart, showInNavigator, stacking * @requires stock/indicators/indicators * @requires stock/indicators/dema * @apioption series.dema */ ''; // adds doclet above to the transpiled file return DEMAIndicator; }); _registerModule(_modules, 'masters/indicators/dema.src.js', [], function () { }); }));