highcharts
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JavaScript charting framework
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JavaScript
/* *
*
* License: www.highcharts.com/license
*
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
*
* */
;
import SeriesRegistry from '../../../Core/Series/SeriesRegistry.js';
const { sma: SMAIndicator } = SeriesRegistry.seriesTypes;
import U from '../../../Core/Utilities.js';
const { isNumber, merge } = U;
/* *
*
* Class
*
* */
/**
* The CMO series type.
*
* @private
* @class
* @name Highcharts.seriesTypes.cmo
*
* @augments Highcharts.Series
*/
class CMOIndicator extends SMAIndicator {
/* *
*
* Functions
*
* */
getValues(series, params) {
const period = params.period, xVal = series.xData, yVal = series.yData, yValLen = yVal ? yVal.length : 0, CMO = [], xData = [], yData = [];
let i, index = params.index, values;
if (xVal.length < period) {
return;
}
if (isNumber(yVal[0])) {
values = yVal;
}
else {
// In case of the situation, where the series type has data length
// shorter then 4 (HLC, range), this ensures that we are not trying
// to reach the index out of bounds
index = Math.min(index, yVal[0].length - 1);
values = yVal.map((value) => value[index]);
}
let firstAddedSum = 0, sumOfHigherValues = 0, sumOfLowerValues = 0, y;
// Calculate first point, check if the first value
// was added to sum of higher/lower values, and what was the value.
for (let j = period; j > 0; j--) {
if (values[j] > values[j - 1]) {
sumOfHigherValues += values[j] - values[j - 1];
}
else if (values[j] < values[j - 1]) {
sumOfLowerValues += values[j - 1] - values[j];
}
}
// You might divide by 0 if all values are equal,
// so return 0 in this case.
y =
sumOfHigherValues + sumOfLowerValues > 0 ?
(100 * (sumOfHigherValues - sumOfLowerValues)) /
(sumOfHigherValues + sumOfLowerValues) :
0;
xData.push(xVal[period]);
yData.push(y);
CMO.push([xVal[period], y]);
for (i = period + 1; i < yValLen; i++) {
firstAddedSum = Math.abs(values[i - period - 1] - values[i - period]);
if (values[i] > values[i - 1]) {
sumOfHigherValues += values[i] - values[i - 1];
}
else if (values[i] < values[i - 1]) {
sumOfLowerValues += values[i - 1] - values[i];
}
// Check, to which sum was the first value added to,
// and subtract this value from given sum.
if (values[i - period] > values[i - period - 1]) {
sumOfHigherValues -= firstAddedSum;
}
else {
sumOfLowerValues -= firstAddedSum;
}
// Same as above.
y =
sumOfHigherValues + sumOfLowerValues > 0 ?
(100 * (sumOfHigherValues - sumOfLowerValues)) /
(sumOfHigherValues + sumOfLowerValues) :
0;
xData.push(xVal[i]);
yData.push(y);
CMO.push([xVal[i], y]);
}
return {
values: CMO,
xData: xData,
yData: yData
};
}
}
/* *
*
* Static Properties
*
* */
/**
* Chande Momentum Oscilator (CMO) technical indicator. This series
* requires the `linkedTo` option to be set and should be loaded after
* the `stock/indicators/indicators.js` file.
*
* @sample stock/indicators/cmo
* CMO indicator
*
* @extends plotOptions.sma
* @since 9.1.0
* @product highstock
* @requires stock/indicators/indicators
* @requires stock/indicators/cmo
* @optionparent plotOptions.cmo
*/
CMOIndicator.defaultOptions = merge(SMAIndicator.defaultOptions, {
params: {
period: 20,
index: 3
}
});
SeriesRegistry.registerSeriesType('cmo', CMOIndicator);
/* *
*
* Default Export
*
* */
export default CMOIndicator;
/* *
*
* API Options
*
* */
/**
* A `CMO` series. If the [type](#series.cmo.type) option is not
* specified, it is inherited from [chart.type](#chart.type).
*
* @extends series,plotOptions.cmo
* @since 9.1.0
* @product highstock
* @excluding dataParser, dataURL
* @requires stock/indicators/indicators
* @requires stock/indicators/cmo
* @apioption series.cmo
*/
(''); // To include the above in the js output