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
38 lines
1.3 KiB
JavaScript
38 lines
1.3 KiB
JavaScript
import { BaseIndicator } from './base.js';
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export class ATRIndicator extends BaseIndicator {
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calculate(candles) {
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const period = this.params.period || 14;
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const results = new Array(candles.length).fill(null);
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const tr = new Array(candles.length).fill(0);
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for (let i = 1; i < candles.length; i++) {
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const h_l = candles[i].high - candles[i].low;
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const h_pc = Math.abs(candles[i].high - candles[i-1].close);
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const l_pc = Math.abs(candles[i].low - candles[i-1].close);
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tr[i] = Math.max(h_l, h_pc, l_pc);
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}
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let atr = 0;
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let sum = 0;
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for (let i = 1; i <= period; i++) sum += tr[i];
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atr = sum / period;
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results[period] = atr;
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for (let i = period + 1; i < candles.length; i++) {
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atr = (atr * (period - 1) + tr[i]) / period;
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results[i] = atr;
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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: 'ATR',
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description: 'Average True Range - measures market volatility',
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inputs: [{ name: 'period', label: 'Period', type: 'number', default: 14, min: 1, max: 100 }],
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plots: [{ id: 'value', color: '#795548', title: 'ATR' }]
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};
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}
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}
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