/**
* Moving Average Indicators
* SMA, EMA calculations
*/
export function calculateSMA(values, period) {
if (values.length === 0)
return [];
// Use adaptive period for small datasets
const effectivePeriod = Math.min(period, values.length);
const sma = [];
for (let i = effectivePeriod - 1; i < values.length; i++) {
const sum = values.slice(i - effectivePeriod + 1, i + 1).reduce((a, b) => a + b, 0);
sma.push(sum / effectivePeriod);
}
return sma;
}
export function calculateEMA(values, period) {
if (values.length === 0)
return [];
// Use adaptive period for small datasets
const effectivePeriod = Math.min(period, values.length);
const ema = [];
const multiplier = 2 / (effectivePeriod + 1);
// Start with SMA
let sum = 0;
for (let i = 0; i < effectivePeriod; i++) {
sum += values[i];
}
ema.push(sum / effectivePeriod);
// Calculate EMA for remaining values
for (let i = effectivePeriod; i < values.length; i++) {
const currentEMA = (values[i] - ema[ema.length - 1]) * multiplier + ema[ema.length - 1];
ema.push(currentEMA);
}
return ema;
}
