highcharts
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JavaScript charting framework
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JavaScript
/**
* @license Highstock JS v9.0.1 (2021-02-16)
*
* Indicator series type for Highstock
*
* (c) 2010-2021 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) {
var _modules = Highcharts ? Highcharts._modules : {};
function _registerModule(obj, path, args, fn) {
if (!obj.hasOwnProperty(path)) {
obj[path] = fn.apply(null, args);
}
}
_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. !!!!!!!
*
* */
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 (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var SMAIndicator = SeriesRegistry.seriesTypes.sma;
var extend = U.extend,
merge = U.merge,
correctFloat = U.correctFloat,
pick = U.pick;
/* eslint-disable valid-jsdoc */
// Utils:
/**
* @private
*/
function accumulatePoints(sum, yVal, i, index, subtract) {
var 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
*/
var DPOIndicator = /** @class */ (function (_super) {
__extends(DPOIndicator, _super);
function DPOIndicator() {
var _this = _super !== null && _super.apply(this,
arguments) || this;
/* *
*
* Properties
*
* */
_this.options = void 0;
_this.data = void 0;
_this.points = void 0;
return _this;
}
/* *
*
* Functions
*
* */
/**
* @lends Highcharts.Series#
*/
DPOIndicator.prototype.getValues = function (series, params) {
var 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 = [],
sum = 0,
oscillator,
periodIndex,
rangeIndex,
price,
i,
j;
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;
// substracting 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
};
};
/**
* 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: {
/**
* Period for Detrended Price Oscillator
*/
period: 21
}
});
return DPOIndicator;
}(SMAIndicator));
extend(DPOIndicator.prototype, {
nameBase: 'DPO'
});
SeriesRegistry.registerSeriesType('dpo', DPOIndicator);
/* *
*
* Default Export
*
* */
/**
* 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', [], function () {
});
}));