egutierrez
113c6dfd71
11 funciones puras con implementación real: SMA, EMA, RSI, BollingerBands, VWAP, LogReturn, AnnualizedVolatility, SharpeRatio, MaxDrawdown, NormalizeOHLCV, TickToOHLCV 4 funciones impuras (stubs): FetchOHLCV, StreamTicks, WriteOHLCVToParquet, LoadOHLCVFromDuckDB Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
24 lines
627 B
Go
24 lines
627 B
Go
package finance
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// EMA calcula la media movil exponencial de data con el periodo dado.
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// El primer valor valido se inicializa con la SMA de los primeros period elementos.
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// Los primeros period-1 elementos del resultado son 0.
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func EMA(data []float64, period int) []float64 {
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n := len(data)
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result := make([]float64, n)
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if period <= 0 || period > n {
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return result
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}
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k := 2.0 / float64(period+1)
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// Seed con SMA
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var sum float64
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for i := 0; i < period; i++ {
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sum += data[i]
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}
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result[period-1] = sum / float64(period)
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for i := period; i < n; i++ {
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result[i] = data[i]*k + result[i-1]*(1-k)
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}
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return result
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}
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