182 lines
6.3 KiB
JavaScript
182 lines
6.3 KiB
JavaScript
/**
|
|
* @license Highstock JS v11.4.1 (2024-04-04)
|
|
*
|
|
* Indicator series type for Highcharts Stock
|
|
*
|
|
* (c) 2010-2024 Sebastian Bochan
|
|
*
|
|
* 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/trendline', ['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/TrendLine/TrendLineIndicator.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, isArray } = U;
|
|
/* *
|
|
*
|
|
* Class
|
|
*
|
|
* */
|
|
/**
|
|
* The Trend line series type.
|
|
*
|
|
* @private
|
|
* @class
|
|
* @name Highcharts.seriesTypes.trendline
|
|
*
|
|
* @augments Highcharts.Series
|
|
*/
|
|
class TrendLineIndicator extends SMAIndicator {
|
|
constructor() {
|
|
/* *
|
|
*
|
|
* Static Properties
|
|
*
|
|
* */
|
|
super(...arguments);
|
|
this.updateAllPoints = true;
|
|
}
|
|
/* *
|
|
*
|
|
* Functions
|
|
*
|
|
* */
|
|
getValues(series, params) {
|
|
const orgXVal = series.xData, yVal = series.yData, xVal = [], LR = [], xData = [], yData = [], index = params.index;
|
|
let numerator = 0, denominator = 0, xValSum = 0, yValSum = 0, counter = 0;
|
|
// Create an array of consecutive xValues, (don't remove duplicates)
|
|
for (let i = 0; i < orgXVal.length; i++) {
|
|
if (i === 0 || orgXVal[i] !== orgXVal[i - 1]) {
|
|
counter++;
|
|
}
|
|
xVal.push(counter);
|
|
}
|
|
for (let i = 0; i < xVal.length; i++) {
|
|
xValSum += xVal[i];
|
|
yValSum += isArray(yVal[i]) ? yVal[i][index] : yVal[i];
|
|
}
|
|
const meanX = xValSum / xVal.length, meanY = yValSum / yVal.length;
|
|
for (let i = 0; i < xVal.length; i++) {
|
|
const y = isArray(yVal[i]) ? yVal[i][index] : yVal[i];
|
|
numerator += (xVal[i] - meanX) * (y - meanY);
|
|
denominator += Math.pow(xVal[i] - meanX, 2);
|
|
}
|
|
// Calculate linear regression:
|
|
for (let i = 0; i < xVal.length; i++) {
|
|
// Check if the xVal is already used
|
|
if (orgXVal[i] === xData[xData.length - 1]) {
|
|
continue;
|
|
}
|
|
const x = orgXVal[i], y = meanY + (numerator / denominator) * (xVal[i] - meanX);
|
|
LR.push([x, y]);
|
|
xData.push(x);
|
|
yData.push(y);
|
|
}
|
|
return {
|
|
xData: xData,
|
|
yData: yData,
|
|
values: LR
|
|
};
|
|
}
|
|
}
|
|
/**
|
|
* Trendline (linear regression) fits a straight line to the selected data
|
|
* using a method called the Sum Of Least Squares. This series requires the
|
|
* `linkedTo` option to be set.
|
|
*
|
|
* @sample stock/indicators/trendline
|
|
* Trendline indicator
|
|
*
|
|
* @extends plotOptions.sma
|
|
* @since 7.1.3
|
|
* @product highstock
|
|
* @requires stock/indicators/indicators
|
|
* @requires stock/indicators/trendline
|
|
* @optionparent plotOptions.trendline
|
|
*/
|
|
TrendLineIndicator.defaultOptions = merge(SMAIndicator.defaultOptions, {
|
|
/**
|
|
* @excluding period
|
|
*/
|
|
params: {
|
|
period: void 0,
|
|
/**
|
|
* The point index which indicator calculations will base. For
|
|
* example using OHLC data, index=2 means the indicator will be
|
|
* calculated using Low values.
|
|
*
|
|
* @default 3
|
|
*/
|
|
index: 3
|
|
}
|
|
});
|
|
extend(TrendLineIndicator.prototype, {
|
|
nameBase: 'Trendline',
|
|
nameComponents: void 0
|
|
});
|
|
SeriesRegistry.registerSeriesType('trendline', TrendLineIndicator);
|
|
/* *
|
|
*
|
|
* Default Export
|
|
*
|
|
* */
|
|
/* *
|
|
*
|
|
* API Options
|
|
*
|
|
* */
|
|
/**
|
|
* A `TrendLine` series. If the [type](#series.trendline.type) option is not
|
|
* specified, it is inherited from [chart.type](#chart.type).
|
|
*
|
|
* @extends series,plotOptions.trendline
|
|
* @since 7.1.3
|
|
* @product highstock
|
|
* @excluding dataParser, dataURL
|
|
* @requires stock/indicators/indicators
|
|
* @requires stock/indicators/trendline
|
|
* @apioption series.trendline
|
|
*/
|
|
''; // To include the above in the js output
|
|
|
|
return TrendLineIndicator;
|
|
});
|
|
_registerModule(_modules, 'masters/indicators/trendline.src.js', [_modules['Core/Globals.js']], function (Highcharts) {
|
|
|
|
|
|
return Highcharts;
|
|
});
|
|
})); |