/**
* Moving Average Indicators
* SMA, EMA calculations
*/
export function calculateSMA(values: number[], period: number): number[] {
if (values.length === 0) return []
// Use adaptive period for small datasets
const effectivePeriod = Math.min(period, values.length)
const sma: number[] = []
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: number[], period: number): number[] {
if (values.length === 0) return []
// Use adaptive period for small datasets
const effectivePeriod = Math.min(period, values.length)
const ema: number[] = []
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
}
