Visualizing quant feeds requires low charting latency. Apex Quant is an indicators dashboard that processes technical formulas (EMA, RSI) in an Express.js backend and streams live chart canvas metrics to React via WebSockets.
Calculates values iteratively over custom periods using exponential weighting multipliers, avoiding calculation overhead on client nodes.
// EMA calculation logic
const k = 2 / (period + 1);
ema[i] = price * k + ema[i-1] * (1 - k);