KDJ

Stochastic oscillator indicator.

Usage

const data = await sdk.getKlineWithIndicators('sz000858', {
  indicators: { kdj: true }
});

data.forEach(k => {
  console.log(`K: ${k.kdj?.k}, D: ${k.kdj?.d}, J: ${k.kdj?.j}`);
});

Manual Calculation

import { calcKDJ } from 'stock-sdk';

const ohlc = [
  { open: 10, high: 11, low: 9.5, close: 10.5 },
  { open: 10.5, high: 11.2, low: 10.1, close: 10.9 },
];

const result = calcKDJ(ohlc, {
  period: 9,
  kPeriod: 3,
  dPeriod: 3,
});

// result[0].k - K line
// result[0].d - D line
// result[0].j - J line

Parameters

Parameter	Default	Description
period	9	RSV period
kPeriod	3	K smoothing period
dPeriod	3	D smoothing period

Formula

$$RSV = \frac{Close - Low_n}{High_n - Low_n} \times 100$$ $$K = \frac{2}{3} K_{prev} + \frac{1}{3} RSV$$ $$D = \frac{2}{3} D_{prev} + \frac{1}{3} K$$ $$J = 3K - 2D$$