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/* *
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* (c) 2010-2021 Rafal Sebestjanski
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*
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* Disparity Index technical indicator for Highcharts Stock
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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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'use strict';
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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if (typeof b !== "function" && b !== null)
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throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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import SeriesRegistry from '../../../Core/Series/SeriesRegistry.js';
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var SMAIndicator = SeriesRegistry.seriesTypes.sma;
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import U from '../../../Core/Utilities.js';
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var correctFloat = U.correctFloat, defined = U.defined, extend = U.extend, isArray = U.isArray, merge = U.merge;
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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 Disparity Index series type.
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*
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* @private
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* @class
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* @name Highcharts.seriesTypes.disparityindex
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*
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* @augments Highcharts.Series
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*/
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var DisparityIndexIndicator = /** @class */ (function (_super) {
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__extends(DisparityIndexIndicator, _super);
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function DisparityIndexIndicator() {
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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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var _this = _super !== null && _super.apply(this, arguments) || this;
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/* *
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*
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* Properties
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*
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* */
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_this.averageIndicator = void 0;
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_this.data = void 0;
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_this.options = void 0;
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_this.points = void 0;
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return _this;
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}
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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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DisparityIndexIndicator.prototype.init = function () {
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var args = arguments, ctx = this, // Disparity Index indicator
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params = args[1].params, // options.params
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averageType = params && params.average ? params.average : void 0;
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ctx.averageIndicator = SeriesRegistry
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.seriesTypes[averageType] || SMAIndicator;
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ctx.averageIndicator.prototype.init.apply(ctx, args);
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};
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DisparityIndexIndicator.prototype.calculateDisparityIndex = function (curPrice, periodAverage) {
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return correctFloat(curPrice - periodAverage) / periodAverage * 100;
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};
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DisparityIndexIndicator.prototype.getValues = function (series, params) {
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var index = params.index, xVal = series.xData, yVal = series.yData, yValLen = yVal ? yVal.length : 0, disparityIndexPoint = [], xData = [], yData = [],
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// "as any" because getValues doesn't exist on typeof Series
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averageIndicator = this.averageIndicator, isOHLC = isArray(yVal[0]),
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// Get the average indicator's values
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values = averageIndicator.prototype.getValues(series, params), yValues = values.yData, start = xVal.indexOf(values.xData[0]);
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// Check period, if bigger than points length, skip
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if (!yValues || yValues.length === 0 ||
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!defined(index) ||
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yVal.length <= start) {
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return;
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}
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// Get the Disparity Index indicator's values
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for (var i = start; i < yValLen; i++) {
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var disparityIndexValue = this.calculateDisparityIndex(isOHLC ? yVal[i][index] : yVal[i], yValues[i - start]);
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disparityIndexPoint.push([
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xVal[i],
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disparityIndexValue
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]);
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xData.push(xVal[i]);
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yData.push(disparityIndexValue);
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}
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return {
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values: disparityIndexPoint,
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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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* Disparity Index.
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* This series requires the `linkedTo` option to be set and should
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* be loaded after the `stock/indicators/indicators.js` file.
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*
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* @sample stock/indicators/disparity-index
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* Disparity Index indicator
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*
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* @extends plotOptions.sma
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* @since 9.1.0
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* @product highstock
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* @excluding allAreas, colorAxis, joinBy, keys, navigatorOptions,
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* pointInterval, pointIntervalUnit, pointPlacement,
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* pointRange, pointStart, showInNavigator, stacking
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* @requires stock/indicators/indicators
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* @requires stock/indicators/disparity-index
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* @optionparent plotOptions.disparityindex
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*/
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DisparityIndexIndicator.defaultOptions = merge(SMAIndicator.defaultOptions, {
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params: {
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/**
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* The average used to calculate the Disparity Index indicator.
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* By default it uses SMA, with EMA as an option. To use other
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* averages, e.g. TEMA, the `stock/indicators/tema.js` file needs to
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* be loaded.
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*
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* If value is different than `ema`, `dema`, `tema` or `wma`,
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* then sma is used.
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*/
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average: 'sma',
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index: 3
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},
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marker: {
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enabled: false
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},
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dataGrouping: {
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approximation: 'averages'
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}
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});
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return DisparityIndexIndicator;
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}(SMAIndicator));
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extend(DisparityIndexIndicator.prototype, {
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nameBase: 'Disparity Index',
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nameComponents: ['period', 'average']
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});
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SeriesRegistry.registerSeriesType('disparityindex', DisparityIndexIndicator);
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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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export default DisparityIndexIndicator;
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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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* The Disparity Index indicator series.
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* If the [type](#series.disparityindex.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.disparityindex
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* @since 9.1.0
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* @product highstock
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* @excluding allAreas, colorAxis, dataParser, dataURL, joinBy, keys,
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* 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/disparity-index
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* @apioption series.disparityindex
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*/
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''; // to include the above in the js output
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