wwbsr/node_modules/highcharts/es-modules/Stock/Indicators/CCIIndicator.js

/* *
 *
 *  License: www.highcharts.com/license
 *
 *  !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
 * */
'use strict';
import U from '../../Core/Utilities.js';
var isArray = U.isArray, seriesType = U.seriesType;
/* eslint-disable valid-jsdoc */
// Utils:
/**
 * @private
 */
function sumArray(array) {
    return array.reduce(function (prev, cur) {
        return prev + cur;
    }, 0);
}
/**
 * @private
 */
function meanDeviation(arr, sma) {
    var len = arr.length, sum = 0, i;
    for (i = 0; i < len; i++) {
        sum += Math.abs(sma - (arr[i]));
    }
    return sum;
}
/* eslint-enable valid-jsdoc */
/**
 * The CCI series type.
 *
 * @private
 * @class
 * @name Highcharts.seriesTypes.cci
 *
 * @augments Highcharts.Series
 */
seriesType('cci', 'sma', 
/**
 * Commodity Channel Index (CCI). This series requires `linkedTo` option to
 * be set.
 *
 * @sample stock/indicators/cci
 *         CCI indicator
 *
 * @extends      plotOptions.sma
 * @since        6.0.0
 * @product      highstock
 * @requires     stock/indicators/indicators
 * @requires     stock/indicators/cci
 * @optionparent plotOptions.cci
 */
{
    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, TP = [], periodTP = [], range = 1, CCI = [], xData = [], yData = [], CCIPoint, p, len, smaTP, TPtemp, meanDev, i;
        // CCI requires close value
        if (xVal.length <= period ||
            !isArray(yVal[0]) ||
            yVal[0].length !== 4) {
            return;
        }
        // accumulate first N-points
        while (range < period) {
            p = yVal[range - 1];
            TP.push((p[1] + p[2] + p[3]) / 3);
            range++;
        }
        for (i = period; i <= yValLen; i++) {
            p = yVal[i - 1];
            TPtemp = (p[1] + p[2] + p[3]) / 3;
            len = TP.push(TPtemp);
            periodTP = TP.slice(len - period);
            smaTP = sumArray(periodTP) / period;
            meanDev = meanDeviation(periodTP, smaTP) / period;
            CCIPoint = ((TPtemp - smaTP) / (0.015 * meanDev));
            CCI.push([xVal[i - 1], CCIPoint]);
            xData.push(xVal[i - 1]);
            yData.push(CCIPoint);
        }
        return {
            values: CCI,
            xData: xData,
            yData: yData
        };
    }
});
/**
 * A `CCI` series. If the [type](#series.cci.type) option is not
 * specified, it is inherited from [chart.type](#chart.type).
 *
 * @extends   series,plotOptions.cci
 * @since     6.0.0
 * @excluding dataParser, dataURL
 * @product   highstock
 * @requires  stock/indicators/indicators
 * @requires  stock/indicators/cci
 * @apioption series.cci
 */
''; // to include the above in the js output