wwbsr/node_modules/highcharts/indicators/atr.src.js

/**
 * @license Highstock JS v8.2.0 (2020-08-20)
 *
 * Indicator series type for Highstock
 *
 * (c) 2010-2019 Sebastian Bochan
 *
 * 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/atr', ['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, 'Stock/Indicators/ATRIndicator.js', [_modules['Core/Utilities.js']], function (U) {
        /* *
         *
         *  License: www.highcharts.com/license
         *
         *  !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
         *
         * */
        var isArray = U.isArray,
            seriesType = U.seriesType;
        var UNDEFINED;
        /* eslint-disable valid-jsdoc */
        // Utils:
        /**
         * @private
         */
        function accumulateAverage(points, xVal, yVal, i) {
            var xValue = xVal[i],
                yValue = yVal[i];
            points.push([xValue, yValue]);
        }
        /**
         * @private
         */
        function getTR(currentPoint, prevPoint) {
            var pointY = currentPoint,
                prevY = prevPoint,
                HL = pointY[1] - pointY[2],
                HCp = prevY === UNDEFINED ? 0 : Math.abs(pointY[1] - prevY[3]),
                LCp = prevY === UNDEFINED ? 0 : Math.abs(pointY[2] - prevY[3]),
                TR = Math.max(HL,
                HCp,
                LCp);
            return TR;
        }
        /**
         * @private
         */
        function populateAverage(points, xVal, yVal, i, period, prevATR) {
            var x = xVal[i - 1],
                TR = getTR(yVal[i - 1],
                yVal[i - 2]),
                y;
            y = (((prevATR * (period - 1)) + TR) / period);
            return [x, y];
        }
        /* eslint-enable valid-jsdoc */
        /**
         * The ATR series type.
         *
         * @private
         * @class
         * @name Highcharts.seriesTypes.atr
         *
         * @augments Highcharts.Series
         */
        seriesType('atr', 'sma', 
        /**
         * Average true range indicator (ATR). This series requires `linkedTo`
         * option to be set.
         *
         * @sample stock/indicators/atr
         *         ATR indicator
         *
         * @extends      plotOptions.sma
         * @since        6.0.0
         * @product      highstock
         * @requires     stock/indicators/indicators
         * @requires     stock/indicators/atr
         * @optionparent plotOptions.atr
         */
        {
            params: {
                period: 14
            }
        }, 
        /**
         * @lends Highcharts.Series#
         */
        {
            getValues: function (series, params) {
                var period = params.period,
                    xVal = series.xData,
                    yVal = series.yData,
                    yValLen = yVal ? yVal.length : 0,
                    xValue = xVal[0],
                    yValue = yVal[0],
                    range = 1,
                    prevATR = 0,
                    TR = 0,
                    ATR = [],
                    xData = [],
                    yData = [],
                    point,
                    i,
                    points;
                points = [[xValue, yValue]];
                if ((xVal.length <= period) ||
                    !isArray(yVal[0]) ||
                    yVal[0].length !== 4) {
                    return;
                }
                for (i = 1; i <= yValLen; i++) {
                    accumulateAverage(points, xVal, yVal, i);
                    if (period < range) {
                        point = populateAverage(points, xVal, yVal, i, period, prevATR);
                        prevATR = point[1];
                        ATR.push(point);
                        xData.push(point[0]);
                        yData.push(point[1]);
                    }
                    else if (period === range) {
                        prevATR = TR / (i - 1);
                        ATR.push([xVal[i - 1], prevATR]);
                        xData.push(xVal[i - 1]);
                        yData.push(prevATR);
                        range++;
                    }
                    else {
                        TR += getTR(yVal[i - 1], yVal[i - 2]);
                        range++;
                    }
                }
                return {
                    values: ATR,
                    xData: xData,
                    yData: yData
                };
            }
        });
        /**
         * A `ATR` series. If the [type](#series.atr.type) option is not specified, it
         * is inherited from [chart.type](#chart.type).
         *
         * @extends   series,plotOptions.atr
         * @since     6.0.0
         * @product   highstock
         * @excluding dataParser, dataURL
         * @requires  stock/indicators/indicators
         * @requires  stock/indicators/atr
         * @apioption series.atr
         */
        ''; // to include the above in the js output

    });
    _registerModule(_modules, 'masters/indicators/atr.src.js', [], function () {


    });
}));