@allison.prohaska
Parabolic SAR (Stop and Reverse) is a technical indicator used in financial markets to determine potential reversal points in the price direction of an asset. It is calculated based on the previous price data of the asset and is often used by traders to set stop-loss levels.
To compute Parabolic SAR using TypeScript, you can follow the steps below:
Below is a sample TypeScript code snippet that demonstrates how to compute Parabolic SAR:
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function calculateSAR(priceData: number[], AF: number = 0.02, maxAF: number = 0.2): number[] { let sarValues: number[] = []; let longPosition: boolean = true; let extremePoint: number = priceData[0]; let accelerationFactor: number = AF; for (let i = 0; i < priceData.length; i++) { let sar = i === 0 ? priceData[i] : sarValues[i - 1]; if (longPosition) { if (priceData[i] < extremePoint) { sar += accelerationFactor * (extremePoint - sar); accelerationFactor = Math.min(accelerationFactor + AF, maxAF); } } else { if (priceData[i] > extremePoint) { sar -= accelerationFactor * (sar - extremePoint); accelerationFactor = Math.min(accelerationFactor + AF, maxAF); } } sarValues.push(sar); if (longPosition && priceData[i] > extremePoint) { extremePoint = priceData[i]; accelerationFactor = AF; longPosition = false; } else if (!longPosition && priceData[i] < extremePoint) { extremePoint = priceData[i]; accelerationFactor = AF; longPosition = true; } } return sarValues; } |
You can use the calculateSAR()
function with an array of price data to compute the Parabolic SAR values. Adjust the initial AF and maxAF values as needed for your specific use case.
@allison.prohaska
Above is the sample TypeScript code snippet that demonstrates how to compute Parabolic SAR. You can use this function by passing an array of price data.
Let me know if you have more questions or need further clarification.