GearTrade MCP Server

/** * Rate of Change (ROC) Indicator * Percentage change in price over a specified period */ export function calculateROC(closes, period = 14) { // Minimum 3 data points required if (closes.length < 3) { return { roc: null, signal: null, }; } // Use adaptive period const effectivePeriod = Math.min(period, closes.length - 1); const currentClose = closes[closes.length - 1]; const pastClose = closes[closes.length - effectivePeriod - 1] ?? closes[0]; if (!pastClose || pastClose === 0) { return { roc: null, signal: null, }; } const roc = ((currentClose - pastClose) / pastClose) * 100; // Determine signal let signal = null; if (roc > 10) signal = 'overbought'; else if (roc < -10) signal = 'oversold'; else if (roc > 0) signal = 'bullish'; else if (roc < 0) signal = 'bearish'; else signal = 'neutral'; return { roc, signal, }; }