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Fix EMA function crash when first point is null

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This commit is contained in:
Alexander Zobnin
2022-04-29 14:44:26 +03:00
parent aa0853324a
commit 9d6abf3164
1 changed files with 4 additions and 1 deletions
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5
pkg/timeseries/moving_average.go
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@@ -77,8 +77,11 @@ func (ts TimeSeries) ExponentialMovingAverage(an float64) TimeSeries {
var a float64 var a float64
var n int var n int
ema := []TimePoint{ts[0]} ema := []TimePoint{ts[0]}
emaPrev := *ts[0].Value
var emaCurrent float64 var emaCurrent float64
var emaPrev float64 = 0
if ts[0].Value != nil {
emaPrev = *ts[0].Value
}
if an > 1 { if an > 1 {
// Calculate a from window size // Calculate a from window size