text: /**
   * @license  Highcharts JS v6.0.3 (2017-11-14)
   *
   * Indicator series type for Highstock
   *
   * (c) 2010-2017 Paweł Fus
   *
   * License: www.highcharts.com/license
   */
  'use strict';
  (function(factory) {
      if (typeof module === 'object' && module.exports) {
          module.exports = factory;
      } else {
          factory(Highcharts);
      }
  }(function(Highcharts) {
      (function(H) {
  
  
          var each = H.each,
              merge = H.merge,
              isArray = H.isArray,
              SMA = H.seriesTypes.sma;
  
          // Utils:
          function getStandardDeviation(arr, mean) {
              var variance = 0,
                  arrLen = arr.length,
                  std = 0,
                  i = 0;
  
              for (; i < arrLen; i++) {
                  variance += (arr[i][3] - mean) * (arr[i][3] - mean);
              }
              variance = variance / (arrLen - 1);
  
              std = Math.sqrt(variance);
              return std;
          }
  
          H.seriesType('bb', 'sma',
              /**
               * Bollinger bands (BB). This series requires `linkedTo`
               * option to be set and should be loaded after `stock/indicators/indicators.js` file.
               *
               * @extends {plotOptions.sma}
               * @product highstock
               * @sample {highstock} stock/indicators/bollinger-bands
               *                     Bollinger bands
               * @since 6.0.0
               * @optionparent plotOptions.bb
               */
              {
                  name: 'BB (20, 2)',
                  params: {
                      period: 20,
                      /**
                       * Standard deviation for top and bottom bands.
                       *
                       * @type {Number}
                       * @since 6.0.0
                       * @product highstock
                       */
                      standardDeviation: 2,
                      index: 3
                  },
                  /**
                   * Bottom line options.
                   *
                   * @since 6.0.0
                   * @product highstock
                   */
                  bottomLine: {
                      /**
                       * Styles for a bottom line.
                       *
                       * @since 6.0.0
                       * @product highstock
                       */
                      styles: {
                          /**
                           * Pixel width of the line.
                           *
                           * @type {Number}
                           * @since 6.0.0
                           * @product highstock
                           */
                          lineWidth: 1,
                          /**
                           * Color of the line.
                           * If not set, it's inherited from [plotOptions.bb.color](#plotOptions.bb.color).
                           *
                           * @type {String}
                           * @since 6.0.0
                           * @product highstock
                           */
                          lineColor: undefined
                      }
                  },
                  /**
                   * Top line options.
                   *
                   * @extends {plotOptions.bb.bottomLine}
                   * @since 6.0.0
                   * @product highstock
                   */
                  topLine: {
                      styles: {
                          lineWidth: 1,
                          lineColor: undefined
                      }
                  },
                  tooltip: {
                      /**
                       * The HTML of the point's line in the tooltip. Variables are enclosed
                       * by curly brackets. Available variables are point.x, point.y, series.
                       * name and series.color and other properties on the same form. Furthermore,
                       * point.y can be extended by the `tooltip.valuePrefix` and `tooltip.
                       * valueSuffix` variables. This can also be overridden for each series,
                       * which makes it a good hook for displaying units.
                       *
                       * In styled mode, the dot is colored by a class name rather
                       * than the point color.
                       *
                       * @type {String}
                       * @sample {highcharts} highcharts/tooltip/pointformat/ A different point format with value suffix
                       * @sample {highmaps} maps/tooltip/format/ Format demo
                       * @default
                       *	<span style="color:{point.color}">\u25CF</span> <b> {series.name}</b><br/>
                       *		Top: {point.top}<br/>
                       *		Middle: {point.middle}<br/>
                       *		Bottom: {point.bottom}<br/>
                       */
                      pointFormat: '<span style="color:{point.color}">\u25CF</span>' +
                          '<b> {series.name}</b><br/>' +
                          'Top: {point.top}<br/>' +
                          'Middle: {point.middle}<br/>' +
                          'Bottom: {point.bottom}<br/>'
                  },
                  marker: {
                      enabled: false
                  },
                  dataGrouping: {
                      approximation: 'averages'
                  }
              }, /** @lends Highcharts.Series.prototype */ {
                  pointArrayMap: ['top', 'middle', 'bottom'],
                  pointValKey: 'middle',
                  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);
                  },
                  toYData: function(point) {
                      return [point.top, point.middle, point.bottom];
                  },
                  translate: function() {
                      var indicator = this,
                          translatedBB = ['plotTop', 'plotMiddle', 'plotBottom'];
  
                      SMA.prototype.translate.apply(indicator, arguments);
  
                      each(indicator.points, function(point) {
                          each([point.top, point.middle, point.bottom], function(value, i) {
                              if (value !== null) {
                                  point[translatedBB[i]] = indicator.yAxis.toPixels(value, true);
                              }
                          });
                      });
                  },
                  drawGraph: function() {
                      var indicator = this,
                          middleLinePoints = indicator.points,
                          pointsLength = middleLinePoints.length,
                          middleLineOptions = indicator.options,
                          middleLinePath = indicator.graph,
                          gappedExtend = {
                              options: {
                                  gapSize: middleLineOptions.gapSize
                              }
                          },
                          deviations = [
                              [],
                              []
                          ], // top and bottom point place holders
                          point;
  
                      // Generate points for top and bottom lines:
                      while (pointsLength--) {
                          point = middleLinePoints[pointsLength];
                          deviations[0].push({
                              plotX: point.plotX,
                              plotY: point.plotTop,
                              isNull: point.isNull
                          });
                          deviations[1].push({
                              plotX: point.plotX,
                              plotY: point.plotBottom,
                              isNull: point.isNull
                          });
                      }
  
                      // Modify options and generate lines:
                      each(['topLine', 'bottomLine'], function(lineName, i) {
                          indicator.points = deviations[i];
                          indicator.options = merge(middleLineOptions[lineName].styles, gappedExtend);
                          indicator.graph = indicator['graph' + lineName];
                          SMA.prototype.drawGraph.call(indicator);
  
                          // Now save lines:
                          indicator['graph' + lineName] = indicator.graph;
                      });
  
                      // Restore options and draw a middle line:
                      indicator.points = middleLinePoints;
                      indicator.options = middleLineOptions;
                      indicator.graph = middleLinePath;
                      SMA.prototype.drawGraph.call(indicator);
                  },
                  getValues: function(series, params) {
                      var period = params.period,
                          standardDeviation = params.standardDeviation,
                          xVal = series.xData,
                          yVal = series.yData,
                          yValLen = yVal ? yVal.length : 0,
                          BB = [], // 0- date, 1-middle line, 2-top line, 3-bottom line
                          ML, TL, BL, // middle line, top line and bottom line
                          date,
                          xData = [],
                          yData = [],
                          slicedX,
                          slicedY,
                          stdDev,
                          point,
                          i;
  
                      // BB requires close value
                      if (xVal.length < period || !isArray(yVal[0]) || yVal[0].length !== 4) {
                          return false;
                      }
  
                      for (i = period; i <= yValLen; i++) {
                          slicedX = xVal.slice(i - period, i);
                          slicedY = yVal.slice(i - period, i);
  
                          point = SMA.prototype.getValues.call(this, {
                              xData: slicedX,
                              yData: slicedY
                          }, params);
  
                          date = point.xData[0];
                          ML = point.yData[0];
                          stdDev = getStandardDeviation(slicedY, ML);
                          TL = ML + standardDeviation * stdDev;
                          BL = ML - standardDeviation * stdDev;
  
                          BB.push([date, TL, ML, BL]);
                          xData.push(date);
                          yData.push([TL, ML, BL]);
                      }
  
                      return {
                          values: BB,
                          xData: xData,
                          yData: yData
                      };
                  }
              }
          );
  
          /**
           * A bollinger bands indicator. If the [type](#series.bb.type) option is not
           * specified, it is inherited from [chart.type](#chart.type).
           *
           * For options that apply to multiple series, it is recommended to add
           * them to the [plotOptions.series](#plotOptions.series) options structure.
           * To apply to all series of this specific type, apply it to [plotOptions.
           * bb](#plotOptions.bb).
           *
           * @type {Object}
           * @since 6.0.0
           * @extends series,plotOptions.bb
           * @excluding data,dataParser,dataURL
           * @product highstock
           * @apioption series.bb
           */
  
          /**
           * An array of data points for the series. For the `bb` series type,
           * points are calculated dynamically.
           *
           * @type {Array<Object|Array>}
           * @since 6.0.0
           * @extends series.line.data
           * @product highstock
           * @apioption series.bb.data
           */
  
      }(Highcharts));
  }));
  