06b2a4eac4
- Build indicator list dynamically from class getMetadata() instead of hardcoded array - Remove checkboxes; single-click previews config, double-click adds to chart - Support multiple instances of same indicator type (unique IDs) - Add TradingView-style column legend overlay on chart (top-left) - Recalculate indicators when historical data is prefetched on scroll - Make indicator list and config panels scrollable (hidden scrollbars) - Remove AVAILABLE_INDICATORS from strategies/config.js
46 lines
1.6 KiB
JavaScript
46 lines
1.6 KiB
JavaScript
import { BaseIndicator } from './base.js';
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export class StochasticIndicator extends BaseIndicator {
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calculate(candles) {
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const kPeriod = this.params.kPeriod || 14;
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const dPeriod = this.params.dPeriod || 3;
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const results = new Array(candles.length).fill(null);
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const kValues = new Array(candles.length).fill(null);
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for (let i = kPeriod - 1; i < candles.length; i++) {
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let lowest = Infinity;
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let highest = -Infinity;
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for (let j = 0; j < kPeriod; j++) {
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lowest = Math.min(lowest, candles[i-j].low);
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highest = Math.max(highest, candles[i-j].high);
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}
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const diff = highest - lowest;
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kValues[i] = diff === 0 ? 50 : ((candles[i].close - lowest) / diff) * 100;
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}
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for (let i = kPeriod + dPeriod - 2; i < candles.length; i++) {
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let sum = 0;
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for (let j = 0; j < dPeriod; j++) sum += kValues[i-j];
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results[i] = { k: kValues[i], d: sum / dPeriod };
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}
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return results;
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}
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getMetadata() {
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return {
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name: 'Stochastic',
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description: 'Stochastic Oscillator - compares close to high-low range',
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inputs: [
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{ name: 'kPeriod', label: 'K Period', type: 'number', default: 14 },
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{ name: 'dPeriod', label: 'D Period', type: 'number', default: 3 }
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],
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plots: [
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{ id: 'k', color: '#3f51b5', title: '%K' },
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{ id: 'd', color: '#ff9800', title: '%D' }
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]
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};
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}
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}
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