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/* *
*
* License: www.highcharts.com/license
*
* */
'use strict';
import H from '../parts/Globals.js';
import './accumulation-distribution.src.js';
import '../parts/Utilities.js';
import requiredIndicatorMixin from '../mixins/indicator-required.js';
var EMA = H.seriesTypes.ema,
AD = H.seriesTypes.ad,
error = H.error,
correctFloat = H.correctFloat,
requiredIndicator = requiredIndicatorMixin;
/**
* The Chaikin series type.
*
* @private
* @class
* @name Highcharts.seriesTypes.chaikin
*
* @augments Highcharts.Series
*/
H.seriesType(
'chaikin',
'ema',
/**
* Chaikin Oscillator. This series requires the `linkedTo` option to
* be set and should be loaded after the `stock/indicators/indicators.js`
* and `stock/indicators/ema.js`.
*
* @sample {highstock} stock/indicators/chaikin
* Chaikin Oscillator
*
* @extends plotOptions.ema
* @since 7.0.0
* @product highstock
* @excluding allAreas, colorAxis, joinBy, keys, navigatorOptions,
* pointInterval, pointIntervalUnit, pointPlacement,
* pointRange, pointStart, showInNavigator, stacking
* @optionparent plotOptions.chaikin
*/
{
/**
* Paramters used in calculation of Chaikin Oscillator
* series points.
*
* @excluding index, period
*/
params: {
/**
* The id of volume series which is mandatory.
* For example using OHLC data, volumeSeriesID='volume' means
* the indicator will be calculated using OHLC and volume values.
*/
volumeSeriesID: 'volume',
/**
* Periods for Chaikin Oscillator calculations.
*
* @type {Array<number>}
* @default [3, 10]
*/
periods: [3, 10]
}
},
/**
* @lends Highcharts.Series#
*/
{
nameBase: 'Chaikin Osc',
nameComponents: ['periods'],
init: function () {
var args = arguments,
ctx = this;
requiredIndicator.isParentLoaded(
EMA,
'ema',
ctx.type,
function (indicator) {
indicator.prototype.init.apply(ctx, args);
}
);
},
getValues: function (series, params) {
var periods = params.periods,
period = params.period,
ADL, // Accumulation Distribution Line data
CHA = [], // 0- date, 1- Chaikin Oscillator
xData = [],
yData = [],
periodsOffset,
SPE, // Shorter Period EMA
LPE, // Longer Period EMA
oscillator,
i;
// Check if periods are correct
if (periods.length !== 2 || periods[1] <= periods[0]) {
error(
'Error: "Chaikin requires two periods. Notice, first ' +
'period should be lower than the second one."'
);
return false;
}
ADL = AD.prototype.getValues.call(this, series, {
volumeSeriesID: params.volumeSeriesID,
period: period
});
// Check if adl is calculated properly, if not skip
if (!ADL) {
return false;
}
SPE = EMA.prototype.getValues.call(this, ADL, {
period: periods[0]
});
LPE = EMA.prototype.getValues.call(this, ADL, {
period: periods[1]
});
// Check if ema is calculated properly, if not skip
if (!SPE || !LPE) {
return false;
}
periodsOffset = periods[1] - periods[0];
for (i = 0; i < LPE.yData.length; i++) {
oscillator = correctFloat(
SPE.yData[i + periodsOffset] - LPE.yData[i]
);
CHA.push([LPE.xData[i], oscillator]);
xData.push(LPE.xData[i]);
yData.push(oscillator);
}
return {
values: CHA,
xData: xData,
yData: yData
};
}
}
);
/**
* A `Chaikin Oscillator` series. If the [type](#series.chaikin.type)
* option is not specified, it is inherited from [chart.type](#chart.type).
*
* @extends series,plotOptions.chaikin
* @since 7.0.0
* @product highstock
* @excluding allAreas, colorAxis, dataParser, dataURL, joinBy, keys,
* navigatorOptions, pointInterval, pointIntervalUnit,
* pointPlacement, pointRange, pointStart, stacking, showInNavigator
* @apioption series.chaikin
*/