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/* *
*
* License: www.highcharts.com/license
*
* */
'use strict';
import H from '../parts/Globals.js';
import '../parts/Utilities.js';
import multipleLinesMixin from '../mixins/multipe-lines.js';
var SMA = H.seriesTypes.sma,
EMA = H.seriesTypes.ema,
ATR = H.seriesTypes.atr,
merge = H.merge,
correctFloat = H.correctFloat;
/**
* The Keltner Channels series type.
*
* @private
* @class
* @name Highcharts.seriesTypes.keltnerchannels
*
* @augments Highcharts.Series
*/
H.seriesType(
'keltnerchannels',
'sma',
/**
* Keltner Channels. This series requires the `linkedTo` option to be set
* and should be loaded after the `stock/indicators/indicators.js`,
* `stock/indicators/atr.js`, and `stock/ema/.js`.
*
* @sample {highstock} stock/indicators/keltner-channels
* Keltner Channels
*
* @extends plotOptions.sma
* @since 7.0.0
* @product highstock
* @excluding allAreas, colorAxis, compare, compareBase, joinBy, keys,
* navigatorOptions, pointInterval, pointIntervalUnit,
* pointPlacement, pointRange, pointStart,showInNavigator,
* stacking
* @optionparent plotOptions.keltnerchannels
*/
{
params: {
period: 20,
/**
* The ATR period.
*/
periodATR: 10,
/**
* The ATR multiplier.
*/
multiplierATR: 2
},
/**
* Bottom line options.
*
*/
bottomLine: {
/**
* Styles for a bottom line.
*
*/
styles: {
/**
* Pixel width of the line.
*/
lineWidth: 1,
/**
* Color of the line. If not set, it's inherited from
* `plotOptions.keltnerchannels.color`
*/
lineColor: undefined
}
},
/**
* Top line options.
*
* @extends plotOptions.keltnerchannels.bottomLine
*/
topLine: {
styles: {
lineWidth: 1,
lineColor: undefined
}
},
tooltip: {
pointFormat: '<span style="color:{point.color}">\u25CF</span><b> {series.name}</b><br/>Upper Channel: {point.top}<br/>EMA({series.options.params.period}): {point.middle}<br/>Lower Channel: {point.bottom}<br/>'
},
marker: {
enabled: false
},
dataGrouping: {
approximation: 'averages'
},
lineWidth: 1
},
/**
* @lends Highcharts.Series#
*/
merge(multipleLinesMixin, {
pointArrayMap: ['top', 'middle', 'bottom'],
pointValKey: 'middle',
nameBase: 'Keltner Channels',
nameComponents: ['period', 'periodATR', 'multiplierATR'],
linesApiNames: ['topLine', 'bottomLine'],
requiredIndicators: ['ema', 'atr'],
init: function () {
SMA.prototype.init.apply(this, arguments);
// Set default color for lines:
this.options = merge({
topLine: {
styles: {
lineColor: this.color
}
},
bottomLine: {
styles: {
lineColor: this.color
}
}
}, this.options);
},
getValues: function (series, params) {
var period = params.period,
periodATR = params.periodATR,
multiplierATR = params.multiplierATR,
index = params.index,
yVal = series.yData,
yValLen = yVal ? yVal.length : 0,
// Keltner Channels array structure:
// 0-date, 1-top line, 2-middle line, 3-bottom line
KC = [],
ML, TL, BL, // middle line, top line and bottom line
date,
seriesEMA = EMA.prototype.getValues(series,
{
period: period,
index: index
}),
seriesATR = ATR.prototype.getValues(series,
{
period: periodATR
}),
pointEMA,
pointATR,
xData = [],
yData = [],
i;
if (yValLen < period) {
return false;
}
for (i = period; i <= yValLen; i++) {
pointEMA = seriesEMA.values[i - period];
pointATR = seriesATR.values[i - periodATR];
date = pointEMA[0];
TL = correctFloat(pointEMA[1] + (multiplierATR * pointATR[1]));
BL = correctFloat(pointEMA[1] - (multiplierATR * pointATR[1]));
ML = pointEMA[1];
KC.push([date, TL, ML, BL]);
xData.push(date);
yData.push([TL, ML, BL]);
}
return {
values: KC,
xData: xData,
yData: yData
};
}
})
);
/**
* A Keltner Channels indicator. If the [type](#series.keltnerchannels.type)
* option is not specified, it is inherited from[chart.type](#chart.type).
*
* @extends series,plotOptions.keltnerchannels
* @since 7.0.0
* @product highstock
* @excluding allAreas, colorAxis, compare, compareBase, dataParser, dataURL,
* joinBy, keys, navigatorOptions, pointInterval,
* pointIntervalUnit, pointPlacement, pointRange, pointStart,
* stacking, showInNavigator
* @optionparent series.keltnerchannels
*/