price-channel.src.js
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/* *
*
* License: www.highcharts.com/license
*
* */
'use strict';
import H from '../parts/Globals.js';
import '../parts/Utilities.js';
import reduceArrayMixin from '../mixins/reduce-array.js';
import multipleLinesMixin from '../mixins/multipe-lines.js';
var getArrayExtremes = reduceArrayMixin.getArrayExtremes,
merge = H.merge;
/**
* The Price Channel series type.
*
* @private
* @class
* @name Highcharts.seriesTypes.pc
*
* @augments Highcharts.Series
*/
H.seriesType(
'pc',
'sma',
/**
* Price channel (PC). This series requires the `linkedTo` option to be
* set and should be loaded after the `stock/indicators/indicators.js`.
*
* @sample {highstock} stock/indicators/price-channel
* Price Channel
*
* @extends plotOptions.sma
* @since 7.0.0
* @product highstock
* @excluding allAreas, colorAxis, compare, compareBase, joinBy, keys,
* navigatorOptions, pointInterval, pointIntervalUnit,
* pointPlacement, pointRange, pointStart, showInNavigator,
* stacking
* @optionparent plotOptions.pc
*/
{
/**
* @excluding index
*/
params: {
period: 20
},
lineWidth: 1,
topLine: {
styles: {
/**
* Color of the top line. If not set, it's inherited from
* [plotOptions.pc.color](#plotOptions.pc.color).
*
* @type {Highcharts.ColorString}
*/
lineColor: '#7cb5ec #434348 #90ed7d #f7a35c #8085e9 #f15c80 #e4d354 #2b908f #f45b5b #91e8e1'.split(' ')[2],
/**
* Pixel width of the line.
*/
lineWidth: 1
}
},
bottomLine: {
styles: {
/**
* Color of the bottom line. If not set, it's inherited from
* [plotOptions.pc.color](#plotOptions.pc.color).
*
* @type {Highcharts.ColorString}
*/
lineColor: '#7cb5ec #434348 #90ed7d #f7a35c #8085e9 #f15c80 #e4d354 #2b908f #f45b5b #91e8e1'.split(' ')[8],
/**
* Pixel width of the line.
*/
lineWidth: 1
}
},
dataGrouping: {
approximation: 'averages'
}
},
/**
* @lends Highcharts.Series#
*/
merge(multipleLinesMixin, {
pointArrayMap: ['top', 'middle', 'bottom'],
pointValKey: 'middle',
nameBase: 'Price Channel',
nameComponents: ['period'],
linesApiNames: ['topLine', 'bottomLine'],
getValues: function (series, params) {
var period = params.period,
xVal = series.xData,
yVal = series.yData,
yValLen = yVal ? yVal.length : 0,
PC = [], // 0- date, 1-top line, 2-middle line, 3-bottom line
ML, TL, BL, // middle line, top line and bottom line
date,
low = 2,
high = 1,
xData = [],
yData = [],
slicedY,
extremes,
i;
if (yValLen < period) {
return false;
}
for (i = period; i <= yValLen; i++) {
date = xVal[i - 1];
slicedY = yVal.slice(i - period, i);
extremes = getArrayExtremes(slicedY, low, high);
TL = extremes[1];
BL = extremes[0];
ML = (TL + BL) / 2;
PC.push([date, TL, ML, BL]);
xData.push(date);
yData.push([TL, ML, BL]);
}
return {
values: PC,
xData: xData,
yData: yData
};
}
})
);
/**
* A Price channel indicator. If the [type](#series.pc.type) option is not
* specified, it is inherited from [chart.type](#chart.type).
*
* @extends series,plotOptions.pc
* @since 7.0.0
* @product highstock
* @excluding allAreas, colorAxis, compare, compareBase, dataParser, dataURL,
* joinBy, keys, navigatorOptions, pointInterval,
* pointIntervalUnit, pointPlacement, pointRange, pointStart,
* showInNavigator, stacking
* @optionparent series.pc
*/