highcharts
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JavaScript
/**
* @license Highstock JS v12.3.0 (2025-06-21)
* @module highcharts/indicators/psar
* @requires highcharts
* @requires highcharts/modules/stock
*
* Parabolic SAR Indicator for Highcharts Stock
*
* (c) 2010-2025 Grzegorz Blachliński
*
* License: www.highcharts.com/license
*/
import * as __WEBPACK_EXTERNAL_MODULE__highcharts_src_js_8202131d__ from "../highcharts.src.js";
import * as __WEBPACK_EXTERNAL_MODULE__modules_stock_src_js_b3d80146__ from "../modules/stock.src.js";
/******/ // The require scope
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/******/ /* webpack/runtime/compat get default export */
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/******/ // getDefaultExport function for compatibility with non-harmony modules
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/******/ () => (module['default']) :
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;// external ["../highcharts.src.js","default"]
const external_highcharts_src_js_default_namespaceObject = __WEBPACK_EXTERNAL_MODULE__highcharts_src_js_8202131d__["default"];
var external_highcharts_src_js_default_default = /*#__PURE__*/__webpack_require__.n(external_highcharts_src_js_default_namespaceObject);
;// external "../modules/stock.src.js"
var x = (y) => {
var x = {}; __webpack_require__.d(x,
y); return x
}
var y = (x) => (() => (x))
const stock_src_js_namespaceObject = x({ });
;// external ["../highcharts.src.js","default","SeriesRegistry"]
const external_highcharts_src_js_default_SeriesRegistry_namespaceObject = __WEBPACK_EXTERNAL_MODULE__highcharts_src_js_8202131d__["default"].SeriesRegistry;
var external_highcharts_src_js_default_SeriesRegistry_default = /*#__PURE__*/__webpack_require__.n(external_highcharts_src_js_default_SeriesRegistry_namespaceObject);
;// ./code/es-modules/Stock/Indicators/PSAR/PSARIndicator.js
/* *
*
* Parabolic SAR indicator for Highcharts Stock
*
* (c) 2010-2025 Grzegorz Blachliński
*
* License: www.highcharts.com/license
*
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
*
* */
const { sma: SMAIndicator } = (external_highcharts_src_js_default_SeriesRegistry_default()).seriesTypes;
const { merge } = (external_highcharts_src_js_default_default());
/* *
*
* Functions
*
* */
// Utils:
/**
*
*/
function toFixed(a, n) {
return parseFloat(a.toFixed(n));
}
/**
*
*/
function calculateDirection(previousDirection, low, high, PSAR) {
if ((previousDirection === 1 && low > PSAR) ||
(previousDirection === -1 && high > PSAR)) {
return 1;
}
return -1;
}
/* *
* Method for calculating acceleration factor
* dir - direction
* pDir - previous Direction
* eP - extreme point
* pEP - previous extreme point
* inc - increment for acceleration factor
* maxAcc - maximum acceleration factor
* initAcc - initial acceleration factor
*/
/**
*
*/
function getAccelerationFactor(dir, pDir, eP, pEP, pAcc, inc, maxAcc, initAcc) {
if (dir === pDir) {
if (dir === 1 && (eP > pEP)) {
return (pAcc === maxAcc) ? maxAcc : toFixed(pAcc + inc, 2);
}
if (dir === -1 && (eP < pEP)) {
return (pAcc === maxAcc) ? maxAcc : toFixed(pAcc + inc, 2);
}
return pAcc;
}
return initAcc;
}
/**
*
*/
function getExtremePoint(high, low, previousDirection, previousExtremePoint) {
if (previousDirection === 1) {
return (high > previousExtremePoint) ? high : previousExtremePoint;
}
return (low < previousExtremePoint) ? low : previousExtremePoint;
}
/**
*
*/
function getEPMinusPSAR(EP, PSAR) {
return EP - PSAR;
}
/**
*
*/
function getAccelerationFactorMultiply(accelerationFactor, EPMinusSAR) {
return accelerationFactor * EPMinusSAR;
}
/* *
* Method for calculating PSAR
* pdir - previous direction
* sDir - second previous Direction
* PSAR - previous PSAR
* pACCMultiply - previous acceleration factor multiply
* sLow - second previous low
* pLow - previous low
* sHigh - second previous high
* pHigh - previous high
* pEP - previous extreme point
*/
/**
*
*/
function getPSAR(pdir, sDir, PSAR, pACCMulti, sLow, pLow, pHigh, sHigh, pEP) {
if (pdir === sDir) {
if (pdir === 1) {
return (PSAR + pACCMulti < Math.min(sLow, pLow)) ?
PSAR + pACCMulti :
Math.min(sLow, pLow);
}
return (PSAR + pACCMulti > Math.max(sHigh, pHigh)) ?
PSAR + pACCMulti :
Math.max(sHigh, pHigh);
}
return pEP;
}
/* *
*
* Class
*
* */
/**
* The Parabolic SAR series type.
*
* @private
* @class
* @name Highcharts.seriesTypes.psar
*
* @augments Highcharts.Series
*/
class PSARIndicator extends SMAIndicator {
constructor() {
/* *
*
* Static Properties
*
* */
super(...arguments);
this.nameComponents = void 0;
}
/* *
*
* Functions
*
* */
getValues(series, params) {
const xVal = series.xData, yVal = series.yData, maxAccelerationFactor = params.maxAccelerationFactor, increment = params.increment,
// Set initial acc factor (for every new trend!)
initialAccelerationFactor = params.initialAccelerationFactor, decimals = params.decimals, index = params.index, PSARArr = [], xData = [], yData = [];
let accelerationFactor = params.initialAccelerationFactor, direction,
// Extreme point is the lowest low for falling and highest high
// for rising psar - and we are starting with falling
extremePoint = yVal[0][1], EPMinusPSAR, accelerationFactorMultiply, newDirection, previousDirection = 1, prevLow, prevPrevLow, prevHigh, prevPrevHigh, PSAR = yVal[0][2], newExtremePoint, high, low, ind;
if (index >= yVal.length) {
return;
}
for (ind = 0; ind < index; ind++) {
extremePoint = Math.max(yVal[ind][1], extremePoint);
PSAR = Math.min(yVal[ind][2], toFixed(PSAR, decimals));
}
direction = (yVal[ind][1] > PSAR) ? 1 : -1;
EPMinusPSAR = getEPMinusPSAR(extremePoint, PSAR);
accelerationFactor = params.initialAccelerationFactor;
accelerationFactorMultiply = getAccelerationFactorMultiply(accelerationFactor, EPMinusPSAR);
PSARArr.push([xVal[index], PSAR]);
xData.push(xVal[index]);
yData.push(toFixed(PSAR, decimals));
for (ind = index + 1; ind < yVal.length; ind++) {
prevLow = yVal[ind - 1][2];
prevPrevLow = yVal[ind - 2][2];
prevHigh = yVal[ind - 1][1];
prevPrevHigh = yVal[ind - 2][1];
high = yVal[ind][1];
low = yVal[ind][2];
// Null points break PSAR
if (prevPrevLow !== null &&
prevPrevHigh !== null &&
prevLow !== null &&
prevHigh !== null &&
high !== null &&
low !== null) {
PSAR = getPSAR(direction, previousDirection, PSAR, accelerationFactorMultiply, prevPrevLow, prevLow, prevHigh, prevPrevHigh, extremePoint);
newExtremePoint = getExtremePoint(high, low, direction, extremePoint);
newDirection = calculateDirection(previousDirection, low, high, PSAR);
accelerationFactor = getAccelerationFactor(newDirection, direction, newExtremePoint, extremePoint, accelerationFactor, increment, maxAccelerationFactor, initialAccelerationFactor);
EPMinusPSAR = getEPMinusPSAR(newExtremePoint, PSAR);
accelerationFactorMultiply = getAccelerationFactorMultiply(accelerationFactor, EPMinusPSAR);
PSARArr.push([xVal[ind], toFixed(PSAR, decimals)]);
xData.push(xVal[ind]);
yData.push(toFixed(PSAR, decimals));
previousDirection = direction;
direction = newDirection;
extremePoint = newExtremePoint;
}
}
return {
values: PSARArr,
xData: xData,
yData: yData
};
}
}
/**
* Parabolic SAR. This series requires `linkedTo`
* option to be set and should be loaded
* after `stock/indicators/indicators.js` file.
*
* @sample stock/indicators/psar
* Parabolic SAR Indicator
*
* @extends plotOptions.sma
* @since 6.0.0
* @product highstock
* @requires stock/indicators/indicators
* @requires stock/indicators/psar
* @optionparent plotOptions.psar
*/
PSARIndicator.defaultOptions = merge(SMAIndicator.defaultOptions, {
lineWidth: 0,
marker: {
enabled: true
},
states: {
hover: {
lineWidthPlus: 0
}
},
/**
* @excluding period
*/
params: {
period: void 0, // Unchangeable period, do not inherit (#15362)
/**
* The initial value for acceleration factor.
* Acceleration factor is starting with this value
* and increases by specified increment each time
* the extreme point makes a new high.
* AF can reach a maximum of maxAccelerationFactor,
* no matter how long the uptrend extends.
*/
initialAccelerationFactor: 0.02,
/**
* The Maximum value for acceleration factor.
* AF can reach a maximum of maxAccelerationFactor,
* no matter how long the uptrend extends.
*/
maxAccelerationFactor: 0.2,
/**
* Acceleration factor increases by increment each time
* the extreme point makes a new high.
*
* @since 6.0.0
*/
increment: 0.02,
/**
* Index from which PSAR is starting calculation
*
* @since 6.0.0
*/
index: 2,
/**
* Number of maximum decimals that are used in PSAR calculations.
*
* @since 6.0.0
*/
decimals: 4
}
});
external_highcharts_src_js_default_SeriesRegistry_default().registerSeriesType('psar', PSARIndicator);
/* *
*
* Default Export
*
* */
/* harmony default export */ const PSAR_PSARIndicator = ((/* unused pure expression or super */ null && (PSARIndicator)));
/* *
*
* API Options
*
* */
/**
* A `PSAR` series. If the [type](#series.psar.type) option is not specified, it
* is inherited from [chart.type](#chart.type).
*
* @extends series,plotOptions.psar
* @since 6.0.0
* @product highstock
* @excluding dataParser, dataURL
* @requires stock/indicators/indicators
* @requires stock/indicators/psar
* @apioption series.psar
*/
''; // To include the above in the js output
;// ./code/es-modules/masters/indicators/psar.src.js
/* harmony default export */ const psar_src = ((external_highcharts_src_js_default_default()));
export { psar_src as default };