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/**
* @license Highcharts JS v7.1.1 (2019-04-09)
*
* Indicator series type for Highstock
*
* (c) 2010-2019 Rafal Sebestjanski
*
* License: www.highcharts.com/license
*/
'use strict';
(function (factory) {
if (typeof module === 'object' && module.exports) {
factory['default'] = factory;
module.exports = factory;
} else if (typeof define === 'function' && define.amd) {
define('highcharts/indicators/tema', ['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, 'mixins/indicator-required.js', [_modules['parts/Globals.js']], function (H) {
/**
* (c) 2010-2019 Daniel Studencki
*
* License: www.highcharts.com/license
*/
var error = H.error;
var requiredIndicatorMixin = {
/**
* Check whether given indicator is loaded, else throw error.
* @param {function} indicator Indicator constructor function.
* @param {string} requiredIndicator required indicator type.
* @param {string} type Type of indicator where function was called (parent).
* @param {function} callback Callback which is triggered if the given
* indicator is loaded. Takes indicator as
* an argument.
* @param {string} errMessage Error message that will be logged in console.
* @returns {boolean} Returns false when there is no required indicator loaded.
*/
isParentLoaded: function (
indicator,
requiredIndicator,
type,
callback,
errMessage
) {
if (indicator) {
return callback ? callback(indicator) : true;
}
error(
errMessage || this.generateMessage(type, requiredIndicator)
);
return false;
},
generateMessage: function (indicatorType, required) {
return 'Error: "' + indicatorType +
'" indicator type requires "' + required +
'" indicator loaded before. Please read docs: ' +
'https://api.highcharts.com/highstock/plotOptions.' +
indicatorType;
}
};
return requiredIndicatorMixin;
});
_registerModule(_modules, 'indicators/tema.src.js', [_modules['parts/Globals.js'], _modules['mixins/indicator-required.js']], function (H, requiredIndicatorMixin) {
/* *
*
* License: www.highcharts.com/license
*
* */
var isArray = H.isArray,
EMAindicator = H.seriesTypes.ema,
requiredIndicator = requiredIndicatorMixin,
correctFloat = H.correctFloat;
/**
* The TEMA series type.
*
* @private
* @class
* @name Highcharts.seriesTypes.tema
*
* @augments Highcharts.Series
*/
H.seriesType(
'tema',
'ema',
/**
* Normalized average true range indicator (NATR). This series requires
* `linkedTo` option to be set and should be loaded after the
* `stock/indicators/indicators.js` and `stock/indicators/ema.js`.
*
* Requires `https://code.highcharts.com/stock/indicators/ema.js`.
*
* @sample {highstock} stock/indicators/tema
* TEMA indicator
*
* @extends plotOptions.ema
* @since 7.0.0
* @product highstock
* @excluding allAreas, colorAxis, compare, compareBase, joinBy, keys,
* navigatorOptions, pointInterval, pointIntervalUnit,
* pointPlacement, pointRange, pointStart, showInNavigator,
* stacking
* @optionparent plotOptions.tema
*/
{},
/**
* @lends Highcharts.Series#
*/
{
init: function () {
var args = arguments,
ctx = this;
requiredIndicator.isParentLoaded(
EMAindicator,
'ema',
ctx.type,
function (indicator) {
indicator.prototype.init.apply(ctx, args);
}
);
},
getEMA: function (
yVal,
prevEMA,
SMA,
index,
i,
xVal
) {
return EMAindicator.prototype.calculateEma(
xVal || [],
yVal,
i === undefined ? 1 : i,
this.chart.series[0].EMApercent,
prevEMA,
index === undefined ? -1 : index,
SMA
);
},
getPoint: function (
xVal,
tripledPeriod,
EMAlevels,
i
) {
var TEMAPoint = [
xVal[i - 3],
correctFloat(
3 * EMAlevels.level1 -
3 * EMAlevels.level2 + EMAlevels.level3
)
];
return TEMAPoint;
},
getValues: function (series, params) {
var period = params.period,
doubledPeriod = 2 * period,
tripledPeriod = 3 * period,
xVal = series.xData,
yVal = series.yData,
yValLen = yVal ? yVal.length : 0,
index = -1,
accumulatePeriodPoints = 0,
SMA = 0,
TEMA = [],
xDataTema = [],
yDataTema = [],
// EMA of previous point
prevEMA,
prevEMAlevel2,
// EMA values array
EMAvalues = [],
EMAlevel2values = [],
i,
TEMAPoint,
// This object contains all EMA EMAlevels calculated like below
// EMA = level1
// EMA(EMA) = level2,
// EMA(EMA(EMA)) = level3,
EMAlevels = {};
series.EMApercent = (2 / (period + 1));
// Check period, if bigger than EMA points length, skip
if (yValLen < 3 * period - 2) {
return false;
}
// Switch index for OHLC / Candlestick / Arearange
if (isArray(yVal[0])) {
index = params.index ? params.index : 0;
}
// Accumulate first N-points
accumulatePeriodPoints =
EMAindicator.prototype.accumulatePeriodPoints(
period,
index,
yVal
);
// first point
SMA = accumulatePeriodPoints / period;
accumulatePeriodPoints = 0;
// Calculate value one-by-one for each period in visible data
for (i = period; i < yValLen + 3; i++) {
if (i < yValLen + 1) {
EMAlevels.level1 = this.getEMA(
yVal,
prevEMA,
SMA,
index,
i
)[1];
EMAvalues.push(EMAlevels.level1);
}
prevEMA = EMAlevels.level1;
// Summing first period points for ema(ema)
if (i < doubledPeriod) {
accumulatePeriodPoints += EMAlevels.level1;
} else {
// Calculate dema
// First dema point
if (i === doubledPeriod) {
SMA = accumulatePeriodPoints / period;
accumulatePeriodPoints = 0;
}
EMAlevels.level1 = EMAvalues[i - period - 1];
EMAlevels.level2 = this.getEMA(
[EMAlevels.level1],
prevEMAlevel2,
SMA
)[1];
EMAlevel2values.push(EMAlevels.level2);
prevEMAlevel2 = EMAlevels.level2;
// Summing first period points for ema(ema(ema))
if (i < tripledPeriod) {
accumulatePeriodPoints += EMAlevels.level2;
} else {
// Calculate tema
// First tema point
if (i === tripledPeriod) {
SMA = accumulatePeriodPoints / period;
}
if (i === yValLen + 1) {
// Calculate the last ema and emaEMA points
EMAlevels.level1 = EMAvalues[i - period - 1];
EMAlevels.level2 = this.getEMA(
[EMAlevels.level1],
prevEMAlevel2,
SMA
)[1];
EMAlevel2values.push(EMAlevels.level2);
}
EMAlevels.level1 = EMAvalues[i - period - 2];
EMAlevels.level2 = EMAlevel2values[i - 2 * period - 1];
EMAlevels.level3 = this.getEMA(
[EMAlevels.level2],
EMAlevels.prevLevel3,
SMA
)[1];
TEMAPoint = this.getPoint(
xVal,
tripledPeriod,
EMAlevels,
i
);
// Make sure that point exists (for TRIX oscillator)
if (TEMAPoint) {
TEMA.push(TEMAPoint);
xDataTema.push(TEMAPoint[0]);
yDataTema.push(TEMAPoint[1]);
}
EMAlevels.prevLevel3 = EMAlevels.level3;
}
}
}
return {
values: TEMA,
xData: xDataTema,
yData: yDataTema
};
}
}
);
/**
* A `TEMA` series. If the [type](#series.ema.type) option is not
* specified, it is inherited from [chart.type](#chart.type).
*
* @extends series,plotOptions.ema
* @since 7.0.0
* @product highstock
* @excluding allAreas, colorAxis, compare, compareBase, dataParser, dataURL,
* joinBy, keys, navigatorOptions, pointInterval, pointIntervalUnit,
* pointPlacement, pointRange, pointStart, showInNavigator, stacking
* @apioption series.tema
*/
});
_registerModule(_modules, 'masters/indicators/tema.src.js', [], function () {
});
}));