/** * @license Highstock JS v11.4.1 (2024-04-04) * * Indicator series type for Highcharts Stock * * (c) 2010-2024 Wojciech Chmiel * * 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/dpo', ['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/DPO/DPOIndicator.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. !!!!!!! * * */ const { sma: SMAIndicator } = SeriesRegistry.seriesTypes; const { extend, merge, correctFloat, pick } = U; /* * * * Functions * * */ // Utils: /** * @private */ function accumulatePoints(sum, yVal, i, index, subtract) { const price = pick(yVal[i][index], yVal[i]); if (subtract) { return correctFloat(sum - price); } return correctFloat(sum + price); } /* * * * Class * * */ /** * The DPO series type. * * @private * @class * @name Highcharts.seriesTypes.dpo * * @augments Highcharts.Series */ class DPOIndicator extends SMAIndicator { /* * * * Functions * * */ getValues(series, params) { const period = params.period, index = params.index, offset = Math.floor(period / 2 + 1), range = period + offset, xVal = series.xData || [], yVal = series.yData || [], yValLen = yVal.length, // 0- date, 1- Detrended Price Oscillator DPO = [], xData = [], yData = []; let oscillator, periodIndex, rangeIndex, price, i, j, sum = 0; if (xVal.length <= range) { return; } // Accumulate first N-points for SMA for (i = 0; i < period - 1; i++) { sum = accumulatePoints(sum, yVal, i, index); } // Detrended Price Oscillator formula: // DPO = Price - Simple moving average [from (n / 2 + 1) days ago] for (j = 0; j <= yValLen - range; j++) { periodIndex = j + period - 1; rangeIndex = j + range - 1; // Adding the last period point sum = accumulatePoints(sum, yVal, periodIndex, index); price = pick(yVal[rangeIndex][index], yVal[rangeIndex]); oscillator = price - sum / period; // Subtracting the first period point sum = accumulatePoints(sum, yVal, j, index, true); DPO.push([xVal[rangeIndex], oscillator]); xData.push(xVal[rangeIndex]); yData.push(oscillator); } return { values: DPO, xData: xData, yData: yData }; } } /* * * * Static Properties * * */ /** * Detrended Price Oscillator. This series requires the `linkedTo` option to * be set and should be loaded after the `stock/indicators/indicators.js`. * * @sample {highstock} stock/indicators/dpo * Detrended Price Oscillator * * @extends plotOptions.sma * @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/dpo * @optionparent plotOptions.dpo */ DPOIndicator.defaultOptions = merge(SMAIndicator.defaultOptions, { /** * Parameters used in calculation of Detrended Price Oscillator series * points. */ params: { index: 0, /** * Period for Detrended Price Oscillator */ period: 21 } }); extend(DPOIndicator.prototype, { nameBase: 'DPO' }); SeriesRegistry.registerSeriesType('dpo', DPOIndicator); /* * * * Default Export * * */ /* * * * API Options * * */ /** * A Detrended Price Oscillator. If the [type](#series.dpo.type) option is not * specified, it is inherited from [chart.type](#chart.type). * * @extends series,plotOptions.dpo * @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/dpo * @apioption series.dpo */ ''; // To include the above in the js output' return DPOIndicator; }); _registerModule(_modules, 'masters/indicators/dpo.src.js', [_modules['Core/Globals.js']], function (Highcharts) { return Highcharts; }); }));