highcharts
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JavaScript charting framework
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JavaScript
/* *
*
* 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 __());
};
})();
import MultipleLinesMixin from '../../../Mixins/MultipleLines.js';
import ReduceArrayMixin from '../../../Mixins/ReduceArray.js';
import SeriesRegistry from '../../../Core/Series/SeriesRegistry.js';
var SMAIndicator = SeriesRegistry.seriesTypes.sma;
import U from '../../../Core/Utilities.js';
var extend = U.extend, isArray = U.isArray, merge = U.merge;
/**
* The Stochastic series type.
*
* @private
* @class
* @name Highcharts.seriesTypes.stochastic
*
* @augments Highcharts.Series
*/
var StochasticIndicator = /** @class */ (function (_super) {
__extends(StochasticIndicator, _super);
function StochasticIndicator() {
var _this = _super !== null && _super.apply(this, arguments) || this;
_this.data = void 0;
_this.options = void 0;
_this.points = void 0;
return _this;
}
StochasticIndicator.prototype.init = function () {
SeriesRegistry.seriesTypes.sma.prototype.init.apply(this, arguments);
// Set default color for lines:
this.options = merge({
smoothedLine: {
styles: {
lineColor: this.color
}
}
}, this.options);
};
StochasticIndicator.prototype.getValues = function (series, params) {
var periodK = params.periods[0], periodD = params.periods[1], xVal = series.xData, yVal = series.yData, yValLen = yVal ? yVal.length : 0,
// 0- date, 1-%K, 2-%D
SO = [], xData = [], yData = [], slicedY, close = 3, low = 2, high = 1, CL, HL, LL, K, D = null, points, extremes, i;
// Stochastic requires close value
if (yValLen < periodK ||
!isArray(yVal[0]) ||
yVal[0].length !== 4) {
return;
}
// For a N-period, we start from N-1 point, to calculate Nth point
// That is why we later need to comprehend slice() elements list
// with (+1)
for (i = periodK - 1; i < yValLen; i++) {
slicedY = yVal.slice(i - periodK + 1, i + 1);
// Calculate %K
extremes = ReduceArrayMixin.getArrayExtremes(slicedY, low, high);
LL = extremes[0]; // Lowest low in %K periods
CL = yVal[i][close] - LL;
HL = extremes[1] - LL;
K = CL / HL * 100;
xData.push(xVal[i]);
yData.push([K, null]);
// Calculate smoothed %D, which is SMA of %K
if (i >= (periodK - 1) + (periodD - 1)) {
points = SeriesRegistry.seriesTypes.sma.prototype.getValues.call(this, {
xData: xData.slice(-periodD),
yData: yData.slice(-periodD)
}, {
period: periodD
});
D = points.yData[0];
}
SO.push([xVal[i], K, D]);
yData[yData.length - 1][1] = D;
}
return {
values: SO,
xData: xData,
yData: yData
};
};
/**
* Stochastic oscillator. This series requires the `linkedTo` option to be
* set and should be loaded after the `stock/indicators/indicators.js` file.
*
* @sample stock/indicators/stochastic
* Stochastic oscillator
*
* @extends plotOptions.sma
* @since 6.0.0
* @product highstock
* @excluding allAreas, colorAxis, joinBy, keys, navigatorOptions,
* pointInterval, pointIntervalUnit, pointPlacement,
* pointRange, pointStart, showInNavigator, stacking
* @requires stock/indicators/indicators
* @requires stock/indicators/stochastic
* @optionparent plotOptions.stochastic
*/
StochasticIndicator.defaultOptions = merge(SMAIndicator.defaultOptions, {
/**
* @excluding index, period
*/
params: {
/**
* Periods for Stochastic oscillator: [%K, %D].
*
* @type {Array<number,number>}
* @default [14, 3]
*/
periods: [14, 3]
},
marker: {
enabled: false
},
tooltip: {
pointFormat: '<span style="color:{point.color}">\u25CF</span><b> {series.name}</b><br/>%K: {point.y}<br/>%D: {point.smoothed}<br/>'
},
/**
* Smoothed line options.
*/
smoothedLine: {
/**
* Styles for a smoothed line.
*/
styles: {
/**
* Pixel width of the line.
*/
lineWidth: 1,
/**
* Color of the line. If not set, it's inherited from
* [plotOptions.stochastic.color
* ](#plotOptions.stochastic.color).
*
* @type {Highcharts.ColorString}
*/
lineColor: void 0
}
},
dataGrouping: {
approximation: 'averages'
}
});
return StochasticIndicator;
}(SMAIndicator));
extend(StochasticIndicator.prototype, {
nameComponents: ['periods'],
nameBase: 'Stochastic',
pointArrayMap: ['y', 'smoothed'],
parallelArrays: ['x', 'y', 'smoothed'],
pointValKey: 'y',
linesApiNames: ['smoothedLine'],
drawGraph: MultipleLinesMixin.drawGraph,
getTranslatedLinesNames: MultipleLinesMixin.getTranslatedLinesNames,
translate: MultipleLinesMixin.translate,
toYData: MultipleLinesMixin.toYData
});
SeriesRegistry.registerSeriesType('stochastic', StochasticIndicator);
/* *
*
* Default Export
*
* */
export default StochasticIndicator;
/**
* A Stochastic indicator. If the [type](#series.stochastic.type) option is not
* specified, it is inherited from [chart.type](#chart.type).
*
* @extends series,plotOptions.stochastic
* @since 6.0.0
* @product highstock
* @excluding allAreas, colorAxis, dataParser, dataURL, joinBy, keys,
* navigatorOptions, pointInterval, pointIntervalUnit,
* pointPlacement, pointRange, pointStart, showInNavigator, stacking
* @requires stock/indicators/indicators
* @requires stock/indicators/stochastic
* @apioption series.stochastic
*/
''; // to include the above in the js output