191 lines
6.7 KiB
JavaScript
191 lines
6.7 KiB
JavaScript
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/**
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* @license Highstock JS v11.4.1 (2024-04-04)
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*
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* Indicator series type for Highcharts Stock
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*
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* (c) 2010-2024 Wojciech Chmiel
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*
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* License: www.highcharts.com/license
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*/
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(function (factory) {
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if (typeof module === 'object' && module.exports) {
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factory['default'] = factory;
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module.exports = factory;
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} else if (typeof define === 'function' && define.amd) {
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define('highcharts/indicators/dpo', ['highcharts', 'highcharts/modules/stock'], function (Highcharts) {
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factory(Highcharts);
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factory.Highcharts = Highcharts;
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return factory;
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});
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} else {
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factory(typeof Highcharts !== 'undefined' ? Highcharts : undefined);
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}
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}(function (Highcharts) {
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'use strict';
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var _modules = Highcharts ? Highcharts._modules : {};
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function _registerModule(obj, path, args, fn) {
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if (!obj.hasOwnProperty(path)) {
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obj[path] = fn.apply(null, args);
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if (typeof CustomEvent === 'function') {
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window.dispatchEvent(new CustomEvent(
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'HighchartsModuleLoaded',
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{ detail: { path: path, module: obj[path] } }
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));
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}
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}
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}
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_registerModule(_modules, 'Stock/Indicators/DPO/DPOIndicator.js', [_modules['Core/Series/SeriesRegistry.js'], _modules['Core/Utilities.js']], function (SeriesRegistry, U) {
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/* *
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*
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* License: www.highcharts.com/license
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*
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* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
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*
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* */
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const { sma: SMAIndicator } = SeriesRegistry.seriesTypes;
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const { extend, merge, correctFloat, pick } = U;
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/* *
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*
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* Functions
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*
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* */
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// Utils:
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/**
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* @private
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*/
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function accumulatePoints(sum, yVal, i, index, subtract) {
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const price = pick(yVal[i][index], yVal[i]);
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if (subtract) {
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return correctFloat(sum - price);
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}
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return correctFloat(sum + price);
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}
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/* *
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*
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* Class
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*
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* */
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/**
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* The DPO series type.
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*
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* @private
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* @class
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* @name Highcharts.seriesTypes.dpo
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*
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* @augments Highcharts.Series
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*/
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class DPOIndicator extends SMAIndicator {
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/* *
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*
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* Functions
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*
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* */
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getValues(series, params) {
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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,
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// 0- date, 1- Detrended Price Oscillator
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DPO = [], xData = [], yData = [];
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let oscillator, periodIndex, rangeIndex, price, i, j, sum = 0;
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if (xVal.length <= range) {
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return;
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}
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// Accumulate first N-points for SMA
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for (i = 0; i < period - 1; i++) {
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sum = accumulatePoints(sum, yVal, i, index);
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}
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// Detrended Price Oscillator formula:
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// DPO = Price - Simple moving average [from (n / 2 + 1) days ago]
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for (j = 0; j <= yValLen - range; j++) {
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periodIndex = j + period - 1;
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rangeIndex = j + range - 1;
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// Adding the last period point
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sum = accumulatePoints(sum, yVal, periodIndex, index);
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price = pick(yVal[rangeIndex][index], yVal[rangeIndex]);
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oscillator = price - sum / period;
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// Subtracting the first period point
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sum = accumulatePoints(sum, yVal, j, index, true);
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DPO.push([xVal[rangeIndex], oscillator]);
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xData.push(xVal[rangeIndex]);
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yData.push(oscillator);
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}
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return {
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values: DPO,
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xData: xData,
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yData: yData
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};
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}
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}
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/* *
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*
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* Static Properties
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*
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* */
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/**
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* Detrended Price Oscillator. This series requires the `linkedTo` option to
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* be set and should be loaded after the `stock/indicators/indicators.js`.
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*
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* @sample {highstock} stock/indicators/dpo
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* Detrended Price Oscillator
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*
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* @extends plotOptions.sma
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* @since 7.0.0
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* @product highstock
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* @excluding allAreas, colorAxis, compare, compareBase, joinBy, keys,
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* navigatorOptions, pointInterval, pointIntervalUnit,
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* pointPlacement, pointRange, pointStart, showInNavigator,
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* stacking
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* @requires stock/indicators/indicators
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* @requires stock/indicators/dpo
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* @optionparent plotOptions.dpo
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*/
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DPOIndicator.defaultOptions = merge(SMAIndicator.defaultOptions, {
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/**
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* Parameters used in calculation of Detrended Price Oscillator series
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* points.
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*/
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params: {
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index: 0,
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/**
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* Period for Detrended Price Oscillator
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*/
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period: 21
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}
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});
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extend(DPOIndicator.prototype, {
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nameBase: 'DPO'
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});
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SeriesRegistry.registerSeriesType('dpo', DPOIndicator);
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/* *
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*
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* Default Export
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*
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* */
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/* *
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*
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* API Options
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*
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* */
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/**
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* A Detrended Price Oscillator. If the [type](#series.dpo.type) option is not
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* specified, it is inherited from [chart.type](#chart.type).
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*
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* @extends series,plotOptions.dpo
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* @since 7.0.0
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* @product highstock
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* @excluding allAreas, colorAxis, compare, compareBase, dataParser, dataURL,
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* joinBy, keys, navigatorOptions, pointInterval, pointIntervalUnit,
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* pointPlacement, pointRange, pointStart, showInNavigator, stacking
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* @requires stock/indicators/indicators
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* @requires stock/indicators/dpo
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* @apioption series.dpo
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*/
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''; // To include the above in the js output'
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return DPOIndicator;
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});
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_registerModule(_modules, 'masters/indicators/dpo.src.js', [_modules['Core/Globals.js']], function (Highcharts) {
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return Highcharts;
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});
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}));
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