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indicator: clean up and update calculator method names

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This commit is contained in:
c9s 2022-07-14 01:12:36 +08:00
parent c27f416dbc
commit 2a3118a086
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GPG Key ID: 7385E7E464CB0A54
44 changed files with 291 additions and 173 deletions
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8
pkg/bbgo/session.go
View File

@ -43,7 +43,7 @@ type StandardIndicatorSet struct {
ewma map[types.IntervalWindow]*indicator.EWMA
boll map[types.IntervalWindowBandWidth]*indicator.BOLL
stoch map[types.IntervalWindow]*indicator.STOCH
volatility map[types.IntervalWindow]*indicator.VOLATILITY
volatility map[types.IntervalWindow]*indicator.Volatility
store *MarketDataStore
}
@ -55,7 +55,7 @@ func NewStandardIndicatorSet(symbol string, store *MarketDataStore) *StandardInd
ewma: make(map[types.IntervalWindow]*indicator.EWMA),
boll: make(map[types.IntervalWindowBandWidth]*indicator.BOLL),
stoch: make(map[types.IntervalWindow]*indicator.STOCH),
volatility: make(map[types.IntervalWindow]*indicator.VOLATILITY),
volatility: make(map[types.IntervalWindow]*indicator.Volatility),
store: store,
}
@ -146,10 +146,10 @@ func (set *StandardIndicatorSet) STOCH(iw types.IntervalWindow) *indicator.STOCH
}
// VOLATILITY returns the volatility(stddev) indicator of the given interval and the window size.
func (set *StandardIndicatorSet) VOLATILITY(iw types.IntervalWindow) *indicator.VOLATILITY {
func (set *StandardIndicatorSet) VOLATILITY(iw types.IntervalWindow) *indicator.Volatility {
inc, ok := set.volatility[iw]
if !ok {
inc = &indicator.VOLATILITY{IntervalWindow: iw}
inc = &indicator.Volatility{IntervalWindow: iw}
inc.Bind(set.store)
set.volatility[iw] = inc
}

14
pkg/indicator/cci.go
View File

@ -3,7 +3,6 @@ package indicator
import (
"math"
"github.com/c9s/bbgo/pkg/fixedpoint"
"github.com/c9s/bbgo/pkg/types"
)
@ -79,17 +78,20 @@ func (inc *CCI) Length() int {
var _ types.SeriesExtend = &CCI{}
var three = fixedpoint.NewFromInt(3)
func (inc *CCI) calculateAndUpdate(allKLines []types.KLine) {
func (inc *CCI) PushK(k types.KLine) {
inc.Update(k.High.Add(k.Low).Add(k.Close).Div(three).Float64())
}
func (inc *CCI) CalculateAndUpdate(allKLines []types.KLine) {
if inc.TypicalPrice.Length() == 0 {
for _, k := range allKLines {
inc.Update(k.High.Add(k.Low).Add(k.Close).Div(three).Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
} else {
k := allKLines[len(allKLines)-1]
inc.Update(k.High.Add(k.Low).Add(k.Close).Div(three).Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}
@ -99,7 +101,7 @@ func (inc *CCI) handleKLineWindowUpdate(interval types.Interval, window types.KL
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *CCI) Bind(updater KLineWindowUpdater) {

10
pkg/indicator/cma.go
View File

@ -48,9 +48,13 @@ func (inc *CA) Length() int {
var _ types.SeriesExtend = &CA{}
func (inc *CA) calculateAndUpdate(allKLines []types.KLine) {
func (inc *CA) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *CA) CalculateAndUpdate(allKLines []types.KLine) {
for _, k := range allKLines {
inc.Update(k.Close.Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}
@ -60,7 +64,7 @@ func (inc *CA) handleKLineWindowUpdate(interval types.Interval, window types.KLi
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *CA) Bind(updater KLineWindowUpdater) {

12
pkg/indicator/const.go Normal file
View File

@ -0,0 +1,12 @@
package indicator
import (
"time"
"github.com/c9s/bbgo/pkg/fixedpoint"
)
var three = fixedpoint.NewFromInt(3)
var zeroTime = time.Time{}

10
pkg/indicator/dema.go
View File

@ -50,14 +50,20 @@ func (inc *DEMA) Length() int {
var _ types.SeriesExtend = &DEMA{}
func (inc *DEMA) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *DEMA) calculateAndUpdate(allKLines []types.KLine) {
if inc.a1 == nil {
for _, k := range allKLines {
inc.Update(k.Close.Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
} else {
inc.Update(allKLines[len(allKLines)-1].Close.Float64())
// last k
k := allKLines[len(allKLines)-1]
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}

13
pkg/indicator/drift.go
View File

@ -68,14 +68,19 @@ func (inc *Drift) Length() int {
var _ types.SeriesExtend = &Drift{}
func (inc *Drift) calculateAndUpdate(allKLines []types.KLine) {
func (inc *Drift) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *Drift) CalculateAndUpdate(allKLines []types.KLine) {
if inc.chng == nil {
for _, k := range allKLines {
inc.Update(k.Close.Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
} else {
inc.Update(allKLines[len(allKLines)-1].Close.Float64())
k := allKLines[len(allKLines)-1]
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}
@ -85,7 +90,7 @@ func (inc *Drift) handleKLineWindowUpdate(interval types.Interval, window types.
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *Drift) Bind(updater KLineWindowUpdater) {

2
pkg/indicator/drift_test.go
View File

@ -30,7 +30,7 @@ func Test_Drift(t *testing.T) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
drift := Drift{IntervalWindow: types.IntervalWindow{Window: 3}}
drift.calculateAndUpdate(tt.kLines)
drift.CalculateAndUpdate(tt.kLines)
assert.Equal(t, drift.Length(), tt.all)
for _, v := range drift.Values {
assert.LessOrEqual(t, v, 1.0)

12
pkg/indicator/emv.go
View File

@ -63,17 +63,21 @@ func (inc *EMV) Length() int {
var _ types.SeriesExtend = &EMV{}
func (inc *EMV) calculateAndUpdate(allKLines []types.KLine) {
func (inc *EMV) PushK(k types.KLine) {
inc.Update(k.High.Float64(), k.Low.Float64(), k.Volume.Float64())
}
func (inc *EMV) CalculateAndUpdate(allKLines []types.KLine) {
if inc.Values == nil {
for _, k := range allKLines {
inc.Update(k.High.Float64(), k.Low.Float64(), k.Volume.Float64())
inc.PushK(k)
if inc.Length() > 0 {
inc.EmitUpdate(inc.Last())
}
}
} else {
k := allKLines[len(allKLines)-1]
inc.Update(k.High.Float64(), k.Low.Float64(), k.Volume.Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}
@ -82,7 +86,7 @@ func (inc *EMV) handleKLineWindowUpdate(interval types.Interval, window types.KL
if inc.Interval != interval {
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *EMV) Bind(updater KLineWindowUpdater) {

10
pkg/indicator/inf.go
View File

@ -9,3 +9,13 @@ type KLineWindowUpdater interface {
type KLineCloseHandler interface {
OnKLineClosed(func(k types.KLine))
}
// KLinePusher provides an interface for API user to push kline value to the indicator.
// The indicator implements its own way to calculate the value from the given kline object.
type KLinePusher interface {
PushK(k types.KLine)
}
type KLineCalculator interface {
CalculateAndUpdate(allKLines []types.KLine)
}

5
pkg/indicator/line.go
View File

@ -22,11 +22,12 @@ type Line struct {
Interval types.Interval
}
func (l *Line) handleKLineWindowUpdate(interval types.Interval, window types.KLineWindow) {
func (l *Line) handleKLineWindowUpdate(interval types.Interval, allKLines types.KLineWindow) {
if interval != l.Interval {
return
}
newTime := window.Last().EndTime.Time()
newTime := allKLines.Last().EndTime.Time()
delta := int(newTime.Sub(l.currentTime).Minutes()) / l.Interval.Minutes()
l.startIndex += delta
l.endIndex += delta

17
pkg/indicator/macd.go
View File

@ -51,14 +51,20 @@ func (inc *MACD) Update(x float64) {
inc.Histogram.Push(macd - inc.SignalLine.Last())
}
// Deprecated -- this function is not used ??? ask @narumi
func (inc *MACD) calculateMACD(kLines []types.KLine, priceF KLinePriceMapper) float64 {
for _, kline := range kLines {
inc.Update(kline.Close.Float64())
for _, k := range kLines {
inc.PushK(k)
}
return inc.Values[len(inc.Values)-1]
}
func (inc *MACD) calculateAndUpdate(kLines []types.KLine) {
func (inc *MACD) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *MACD) CalculateAndUpdate(kLines []types.KLine) {
if len(kLines) == 0 {
return
}
@ -67,7 +73,8 @@ func (inc *MACD) calculateAndUpdate(kLines []types.KLine) {
if inc.EndTime != zeroTime && !k.EndTime.After(inc.EndTime) {
continue
}
inc.Update(k.Close.Float64())
inc.PushK(k)
}
inc.EmitUpdate(inc.Values[len(inc.Values)-1])
@ -79,7 +86,7 @@ func (inc *MACD) handleKLineWindowUpdate(interval types.Interval, window types.K
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *MACD) Bind(updater KLineWindowUpdater) {

33
pkg/indicator/mapper.go Normal file
View File

@ -0,0 +1,33 @@
package indicator
import "github.com/c9s/bbgo/pkg/types"
type KLinePriceMapper func(k types.KLine) float64
func KLineOpenPriceMapper(k types.KLine) float64 {
return k.Open.Float64()
}
func KLineClosePriceMapper(k types.KLine) float64 {
return k.Close.Float64()
}
func KLineTypicalPriceMapper(k types.KLine) float64 {
return (k.High.Float64() + k.Low.Float64() + k.Close.Float64()) / 3.
}
func KLinePriceVolumeMapper(k types.KLine) float64 {
return k.Close.Mul(k.Volume).Float64()
}
func KLineVolumeMapper(k types.KLine) float64 {
return k.Volume.Float64()
}
func MapKLinePrice(kLines []types.KLine, f KLinePriceMapper) (prices []float64) {
for _, k := range kLines {
prices = append(prices, f(k))
}
return prices
}

12
pkg/indicator/obv.go
View File

@ -54,13 +54,19 @@ func (inc *OBV) Index(i int) float64 {
var _ types.SeriesExtend = &OBV{}
func (inc *OBV) calculateAndUpdate(kLines []types.KLine) {
func (inc *OBV) PushK(k types.KLine) {
inc.Update(k.Close.Float64(), k.Volume.Float64())
}
func (inc *OBV) CalculateAndUpdate(kLines []types.KLine) {
for _, k := range kLines {
if inc.EndTime != zeroTime && !k.EndTime.After(inc.EndTime) {
continue
}
inc.Update(k.Close.Float64(), k.Volume.Float64())
inc.PushK(k)
}
inc.EmitUpdate(inc.Last())
inc.EndTime = kLines[len(kLines)-1].EndTime.Time()
}
@ -70,7 +76,7 @@ func (inc *OBV) handleKLineWindowUpdate(interval types.Interval, window types.KL
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *OBV) Bind(updater KLineWindowUpdater) {

2
pkg/indicator/obv_test.go
View File

@ -51,7 +51,7 @@ func Test_calculateOBV(t *testing.T) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
obv := OBV{IntervalWindow: types.IntervalWindow{Window: tt.window}}
obv.calculateAndUpdate(tt.kLines)
obv.CalculateAndUpdate(tt.kLines)
assert.Equal(t, len(obv.Values), len(tt.want))
for i, v := range obv.Values {
assert.InDelta(t, v, tt.want[i], Delta)

4
pkg/indicator/pivot.go
View File

@ -38,7 +38,7 @@ func (inc *Pivot) LastHigh() float64 {
return inc.Highs[len(inc.Highs)-1]
}
func (inc *Pivot) Update(klines []types.KLine) {
func (inc *Pivot) CalculateAndUpdate(klines []types.KLine) {
if len(klines) < inc.Window {
return
}
@ -84,7 +84,7 @@ func (inc *Pivot) handleKLineWindowUpdate(interval types.Interval, window types.
return
}
inc.Update(window)
inc.CalculateAndUpdate(window)
}
func (inc *Pivot) Bind(updater KLineWindowUpdater) {

7
pkg/indicator/rma.go
View File

@ -64,12 +64,17 @@ func (inc *RMA) Length() int {
var _ types.SeriesExtend = &RMA{}
func (inc *RMA) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *RMA) calculateAndUpdate(kLines []types.KLine) {
for _, k := range kLines {
if inc.EndTime != zeroTime && !k.EndTime.After(inc.EndTime) {
continue
}
inc.Update(k.Close.Float64())
inc.PushK(k)
}
inc.EmitUpdate(inc.Last())

11
pkg/indicator/rsi.go
View File

@ -80,12 +80,17 @@ func (inc *RSI) Length() int {
var _ types.SeriesExtend = &RSI{}
func (inc *RSI) calculateAndUpdate(kLines []types.KLine) {
func (inc *RSI) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *RSI) CalculateAndUpdate(kLines []types.KLine) {
for _, k := range kLines {
if inc.EndTime != zeroTime && !k.EndTime.After(inc.EndTime) {
continue
}
inc.Update(k.Close.Float64())
inc.PushK(k)
}
inc.EmitUpdate(inc.Last())
@ -97,7 +102,7 @@ func (inc *RSI) handleKLineWindowUpdate(interval types.Interval, window types.KL
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *RSI) Bind(updater KLineWindowUpdater) {

2
pkg/indicator/rsi_test.go
View File

@ -59,7 +59,7 @@ func Test_calculateRSI(t *testing.T) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
rsi := RSI{IntervalWindow: types.IntervalWindow{Window: tt.window}}
rsi.calculateAndUpdate(tt.kLines)
rsi.CalculateAndUpdate(tt.kLines)
assert.Equal(t, len(rsi.Values), len(tt.want))
for i, v := range rsi.Values {
assert.InDelta(t, v, tt.want[i], Delta)

15
pkg/indicator/sma.go
View File

@ -10,8 +10,6 @@ import (
const MaxNumOfSMA = 5_000
const MaxNumOfSMATruncateSize = 100
var zeroTime time.Time
//go:generate callbackgen -type SMA
type SMA struct {
types.SeriesBase
@ -59,20 +57,25 @@ func (inc *SMA) Update(value float64) {
}
}
func (inc *SMA) calculateAndUpdate(kLines []types.KLine) {
func (inc *SMA) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *SMA) CalculateAndUpdate(kLines []types.KLine) {
var index = len(kLines) - 1
var kline = kLines[index]
if inc.EndTime != zeroTime && kline.EndTime.Before(inc.EndTime) {
return
}
if inc.Cache == nil {
for _, k := range kLines {
inc.Update(KLineClosePriceMapper(k))
inc.PushK(k)
inc.EndTime = k.EndTime.Time()
inc.EmitUpdate(inc.Values.Last())
}
} else {
inc.Update(KLineClosePriceMapper(kline))
inc.PushK(kline)
inc.EndTime = kline.EndTime.Time()
inc.EmitUpdate(inc.Values.Last())
}
@ -83,7 +86,7 @@ func (inc *SMA) handleKLineWindowUpdate(interval types.Interval, window types.KL
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *SMA) Bind(updater KLineWindowUpdater) {

2
pkg/indicator/sma_test.go
View File

@ -52,7 +52,7 @@ func Test_SMA(t *testing.T) {
sma := SMA{
IntervalWindow: types.IntervalWindow{Window: 5},
}
sma.calculateAndUpdate(tt.kLines)
sma.CalculateAndUpdate(tt.kLines)
assert.InDelta(t, tt.want, sma.Last(), Delta)
assert.InDelta(t, tt.next, sma.Index(1), Delta)
sma.Update(tt.update)

13
pkg/indicator/ssf.go
View File

@ -93,14 +93,19 @@ func (inc *SSF) Last() float64 {
var _ types.SeriesExtend = &SSF{}
func (inc *SSF) calculateAndUpdate(allKLines []types.KLine) {
func (inc *SSF) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *SSF) CalculateAndUpdate(allKLines []types.KLine) {
if inc.Values != nil {
inc.Update(allKLines[len(allKLines)-1].Close.Float64())
k := allKLines[len(allKLines)-1]
inc.PushK(k)
inc.EmitUpdate(inc.Last())
return
}
for _, k := range allKLines {
inc.Update(k.Close.Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}
@ -109,7 +114,7 @@ func (inc *SSF) handleKLineWindowUpdate(interval types.Interval, window types.KL
if inc.Interval != interval {
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *SSF) Bind(updater KLineWindowUpdater) {

2
pkg/indicator/ssf_test.go
View File

@ -62,7 +62,7 @@ func Test_SSF(t *testing.T) {
IntervalWindow: types.IntervalWindow{Window: 5},
Poles: tt.poles,
}
ssf.calculateAndUpdate(tt.kLines)
ssf.CalculateAndUpdate(tt.kLines)
assert.InDelta(t, tt.want, ssf.Last(), Delta)
assert.InDelta(t, tt.next, ssf.Index(1), Delta)
assert.Equal(t, tt.all, ssf.Length())

11
pkg/indicator/stoch.go
View File

@ -59,7 +59,11 @@ func (inc *STOCH) LastD() float64 {
return inc.D[len(inc.D)-1]
}
func (inc *STOCH) calculateAndUpdate(kLines []types.KLine) {
func (inc *STOCH) PushK(k types.KLine) {
inc.Update(k.High.Float64(), k.Low.Float64(), k.Close.Float64())
}
func (inc *STOCH) CalculateAndUpdate(kLines []types.KLine) {
if len(kLines) < inc.Window || len(kLines) < DPeriod {
return
}
@ -68,7 +72,8 @@ func (inc *STOCH) calculateAndUpdate(kLines []types.KLine) {
if inc.EndTime != zeroTime && !k.EndTime.After(inc.EndTime) {
continue
}
inc.Update(k.High.Float64(), k.Low.Float64(), k.Close.Float64())
inc.PushK(k)
}
inc.EmitUpdate(inc.LastK(), inc.LastD())
@ -80,7 +85,7 @@ func (inc *STOCH) handleKLineWindowUpdate(interval types.Interval, window types.
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *STOCH) Bind(updater KLineWindowUpdater) {

2
pkg/indicator/stoch_test.go
View File

@ -56,7 +56,7 @@ func TestSTOCH_update(t *testing.T) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
kd := STOCH{IntervalWindow: types.IntervalWindow{Window: tt.window}}
kd.calculateAndUpdate(tt.kLines)
kd.CalculateAndUpdate(tt.kLines)
got_k := kd.LastK()
diff_k := math.Trunc((got_k-tt.want_k)*100) / 100

13
pkg/indicator/tema.go
View File

@ -55,14 +55,19 @@ func (inc *TEMA) Length() int {
var _ types.SeriesExtend = &TEMA{}
func (inc *TEMA) calculateAndUpdate(allKLines []types.KLine) {
func (inc *TEMA) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *TEMA) CalculateAndUpdate(allKLines []types.KLine) {
if inc.A1 == nil {
for _, k := range allKLines {
inc.Update(k.Close.Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
} else {
inc.Update(allKLines[len(allKLines)-1].Close.Float64())
k := allKLines[len(allKLines)-1]
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}
@ -72,7 +77,7 @@ func (inc *TEMA) handleKLineWindowUpdate(interval types.Interval, window types.K
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *TEMA) Bind(updater KLineWindowUpdater) {

2
pkg/indicator/tema_test.go
View File

@ -46,7 +46,7 @@ func Test_TEMA(t *testing.T) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
tema := TEMA{IntervalWindow: types.IntervalWindow{Window: 16}}
tema.calculateAndUpdate(tt.kLines)
tema.CalculateAndUpdate(tt.kLines)
last := tema.Last()
assert.InDelta(t, tt.want, last, Delta)
assert.InDelta(t, tt.next, tema.Index(1), Delta)

36
pkg/indicator/till.go
View File

@ -12,18 +12,19 @@ const defaultVolumeFactor = 0.7
type TILL struct {
types.SeriesBase
types.IntervalWindow
VolumeFactor float64
e1 *EWMA
e2 *EWMA
e3 *EWMA
e4 *EWMA
e5 *EWMA
e6 *EWMA
c1 float64
c2 float64
c3 float64
c4 float64
UpdateCallbacks []func(value float64)
VolumeFactor float64
e1 *EWMA
e2 *EWMA
e3 *EWMA
e4 *EWMA
e5 *EWMA
e6 *EWMA
c1 float64
c2 float64
c3 float64
c4 float64
updateCallbacks []func(value float64)
}
func (inc *TILL) Update(value float64) {
@ -85,7 +86,11 @@ func (inc *TILL) Length() int {
var _ types.Series = &TILL{}
func (inc *TILL) calculateAndUpdate(allKLines []types.KLine) {
func (inc *TILL) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *TILL) CalculateAndUpdate(allKLines []types.KLine) {
doable := false
if inc.e1 == nil {
doable = true
@ -94,8 +99,9 @@ func (inc *TILL) calculateAndUpdate(allKLines []types.KLine) {
if !doable && k.StartTime.After(inc.e1.LastOpenTime) {
doable = true
}
if doable {
inc.Update(k.Close.Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}
@ -106,7 +112,7 @@ func (inc *TILL) handleKLineWindowUpdate(interval types.Interval, window types.K
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *TILL) Bind(updater KLineWindowUpdater) {

4
pkg/indicator/till_callbacks.go
View File

@ -5,11 +5,11 @@ package indicator
import ()
func (inc *TILL) OnUpdate(cb func(value float64)) {
inc.UpdateCallbacks = append(inc.UpdateCallbacks, cb)
inc.updateCallbacks = append(inc.updateCallbacks, cb)
}
func (inc *TILL) EmitUpdate(value float64) {
for _, cb := range inc.UpdateCallbacks {
for _, cb := range inc.updateCallbacks {
cb(value)
}
}

5
pkg/indicator/till_test.go
View File

@ -4,9 +4,10 @@ import (
"encoding/json"
"testing"
"github.com/stretchr/testify/assert"
"github.com/c9s/bbgo/pkg/fixedpoint"
"github.com/c9s/bbgo/pkg/types"
"github.com/stretchr/testify/assert"
)
/*
@ -55,7 +56,7 @@ func Test_TILL(t *testing.T) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
till := TILL{IntervalWindow: types.IntervalWindow{Window: 16}}
till.calculateAndUpdate(tt.kLines)
till.CalculateAndUpdate(tt.kLines)
last := till.Last()
assert.InDelta(t, tt.want, last, Delta)
assert.InDelta(t, tt.next, till.Index(1), Delta)

13
pkg/indicator/tma.go
View File

@ -50,14 +50,19 @@ func (inc *TMA) Length() int {
var _ types.SeriesExtend = &TMA{}
func (inc *TMA) calculateAndUpdate(allKLines []types.KLine) {
func (inc *TMA) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *TMA) CalculateAndUpdate(allKLines []types.KLine) {
if inc.s1 == nil {
for _, k := range allKLines {
inc.Update(k.Close.Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
} else {
inc.Update(allKLines[len(allKLines)-1].Close.Float64())
k := allKLines[len(allKLines)-1]
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}
@ -67,7 +72,7 @@ func (inc *TMA) handleKLineWindowUpdate(interval types.Interval, window types.KL
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *TMA) Bind(updater KLineWindowUpdater) {

24
pkg/indicator/util.go
View File

@ -1,26 +1,2 @@
package indicator
import "github.com/c9s/bbgo/pkg/types"
type KLinePriceMapper func(k types.KLine) float64
func KLineOpenPriceMapper(k types.KLine) float64 {
return k.Open.Float64()
}
func KLineClosePriceMapper(k types.KLine) float64 {
return k.Close.Float64()
}
func KLineTypicalPriceMapper(k types.KLine) float64 {
return (k.High.Float64() + k.Low.Float64() + k.Close.Float64()) / 3.
}
func MapKLinePrice(kLines []types.KLine, f KLinePriceMapper) (prices []float64) {
for _, k := range kLines {
prices = append(prices, f(k))
}
return prices
}

11
pkg/indicator/vidya.go
View File

@ -15,7 +15,7 @@ type VIDYA struct {
Values types.Float64Slice
input types.Float64Slice
UpdateCallbacks []func(value float64)
updateCallbacks []func(value float64)
}
func (inc *VIDYA) Update(value float64) {
@ -70,14 +70,19 @@ func (inc *VIDYA) Length() int {
var _ types.SeriesExtend = &VIDYA{}
func (inc *VIDYA) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *VIDYA) calculateAndUpdate(allKLines []types.KLine) {
if inc.input.Length() == 0 {
for _, k := range allKLines {
inc.Update(k.Close.Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
} else {
inc.Update(allKLines[len(allKLines)-1].Close.Float64())
k := allKLines[len(allKLines)-1]
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}

4
pkg/indicator/vidya_callbacks.go
View File

@ -5,11 +5,11 @@ package indicator
import ()
func (inc *VIDYA) OnUpdate(cb func(value float64)) {
inc.UpdateCallbacks = append(inc.UpdateCallbacks, cb)
inc.updateCallbacks = append(inc.updateCallbacks, cb)
}
func (inc *VIDYA) EmitUpdate(value float64) {
for _, cb := range inc.UpdateCallbacks {
for _, cb := range inc.updateCallbacks {
cb(value)
}
}

33
pkg/indicator/volatility.go
View File

@ -13,10 +13,10 @@ import (
const MaxNumOfVOL = 5_000
const MaxNumOfVOLTruncateSize = 100
//var zeroTime time.Time
// var zeroTime time.Time
//go:generate callbackgen -type VOLATILITY
type VOLATILITY struct {
//go:generate callbackgen -type Volatility
type Volatility struct {
types.SeriesBase
types.IntervalWindow
Values types.Float64Slice
@ -25,42 +25,43 @@ type VOLATILITY struct {
UpdateCallbacks []func(value float64)
}
func (inc *VOLATILITY) Last() float64 {
func (inc *Volatility) Last() float64 {
if len(inc.Values) == 0 {
return 0.0
}
return inc.Values[len(inc.Values)-1]
}
func (inc *VOLATILITY) Index(i int) float64 {
func (inc *Volatility) Index(i int) float64 {
if len(inc.Values)-i <= 0 {
return 0.0
}
return inc.Values[len(inc.Values)-i-1]
}
func (inc *VOLATILITY) Length() int {
func (inc *Volatility) Length() int {
return len(inc.Values)
}
var _ types.SeriesExtend = &VOLATILITY{}
var _ types.SeriesExtend = &Volatility{}
func (inc *VOLATILITY) calculateAndUpdate(klines []types.KLine) {
if len(klines) < inc.Window {
func (inc *Volatility) CalculateAndUpdate(allKLines []types.KLine) {
if len(allKLines) < inc.Window {
return
}
var end = len(klines) - 1
var lastKLine = klines[end]
var end = len(allKLines) - 1
var lastKLine = allKLines[end]
if inc.EndTime != zeroTime && lastKLine.GetEndTime().Before(inc.EndTime) {
return
}
if len(inc.Values) == 0 {
inc.SeriesBase.Series = inc
}
var recentT = klines[end-(inc.Window-1) : end+1]
var recentT = allKLines[end-(inc.Window-1) : end+1]
volatility, err := calculateVOLATILITY(recentT, inc.Window, KLineClosePriceMapper)
if err != nil {
@ -73,20 +74,20 @@ func (inc *VOLATILITY) calculateAndUpdate(klines []types.KLine) {
inc.Values = inc.Values[MaxNumOfVOLTruncateSize-1:]
}
inc.EndTime = klines[end].GetEndTime().Time()
inc.EndTime = allKLines[end].GetEndTime().Time()
inc.EmitUpdate(volatility)
}
func (inc *VOLATILITY) handleKLineWindowUpdate(interval types.Interval, window types.KLineWindow) {
func (inc *Volatility) handleKLineWindowUpdate(interval types.Interval, window types.KLineWindow) {
if inc.Interval != interval {
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *VOLATILITY) Bind(updater KLineWindowUpdater) {
func (inc *Volatility) Bind(updater KLineWindowUpdater) {
updater.OnKLineWindowUpdate(inc.handleKLineWindowUpdate)
}

6
pkg/indicator/volatility_callbacks.go
View File

@ -1,14 +1,14 @@
// Code generated by "callbackgen -type VOLATILITY"; DO NOT EDIT.
// Code generated by "callbackgen -type Volatility"; DO NOT EDIT.
package indicator
import ()
func (inc *VOLATILITY) OnUpdate(cb func(value float64)) {
func (inc *Volatility) OnUpdate(cb func(value float64)) {
inc.UpdateCallbacks = append(inc.UpdateCallbacks, cb)
}
func (inc *VOLATILITY) EmitUpdate(value float64) {
func (inc *Volatility) EmitUpdate(value float64) {
for _, cb := range inc.UpdateCallbacks {
cb(value)
}

17
pkg/indicator/vwap.go
View File

@ -71,18 +71,21 @@ func (inc *VWAP) Length() int {
var _ types.SeriesExtend = &VWAP{}
func (inc *VWAP) calculateAndUpdate(kLines []types.KLine) {
var priceF = KLineTypicalPriceMapper
func (inc *VWAP) PushK(k types.KLine) {
inc.Update(KLineTypicalPriceMapper(k), k.Volume.Float64())
}
for _, k := range kLines {
func (inc *VWAP) CalculateAndUpdate(allKLines []types.KLine) {
for _, k := range allKLines {
if inc.EndTime != zeroTime && !k.EndTime.After(inc.EndTime) {
continue
}
inc.Update(priceF(k), k.Volume.Float64())
inc.PushK(k)
}
inc.EmitUpdate(inc.Last())
inc.EndTime = kLines[len(kLines)-1].EndTime.Time()
inc.EndTime = allKLines[len(allKLines)-1].EndTime.Time()
}
func (inc *VWAP) handleKLineWindowUpdate(interval types.Interval, window types.KLineWindow) {
@ -90,14 +93,14 @@ func (inc *VWAP) handleKLineWindowUpdate(interval types.Interval, window types.K
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *VWAP) Bind(updater KLineWindowUpdater) {
updater.OnKLineWindowUpdate(inc.handleKLineWindowUpdate)
}
func CalculateVWAP(klines []types.KLine, priceF KLinePriceMapper, window int) float64 {
func calculateVWAP(klines []types.KLine, priceF KLinePriceMapper, window int) float64 {
vwap := VWAP{IntervalWindow: types.IntervalWindow{Window: window}}
for _, k := range klines {
vwap.Update(priceF(k), k.Volume.Float64())

8
pkg/indicator/vwap_callbacks.go
View File

@ -4,12 +4,12 @@ package indicator
import ()
func (V *VWAP) OnUpdate(cb func(value float64)) {
V.UpdateCallbacks = append(V.UpdateCallbacks, cb)
func (inc *VWAP) OnUpdate(cb func(value float64)) {
inc.UpdateCallbacks = append(inc.UpdateCallbacks, cb)
}
func (V *VWAP) EmitUpdate(value float64) {
for _, cb := range V.UpdateCallbacks {
func (inc *VWAP) EmitUpdate(value float64) {
for _, cb := range inc.UpdateCallbacks {
cb(value)
}
}

2
pkg/indicator/vwap_test.go
View File

@ -64,7 +64,7 @@ func Test_calculateVWAP(t *testing.T) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
priceF := KLineTypicalPriceMapper
got := CalculateVWAP(tt.kLines, priceF, tt.window)
got := calculateVWAP(tt.kLines, priceF, tt.window)
diff := math.Trunc((got-tt.want)*100) / 100
if diff != 0 {
t.Errorf("calculateVWAP() = %v, want %v", got, tt.want)

21
pkg/indicator/vwma.go
View File

@ -49,27 +49,20 @@ func (inc *VWMA) Length() int {
var _ types.SeriesExtend = &VWMA{}
func KLinePriceVolumeMapper(k types.KLine) float64 {
return k.Close.Mul(k.Volume).Float64()
}
func KLineVolumeMapper(k types.KLine) float64 {
return k.Volume.Float64()
}
func (inc *VWMA) calculateAndUpdate(kLines []types.KLine) {
if len(kLines) < inc.Window {
func (inc *VWMA) CalculateAndUpdate(allKLines []types.KLine) {
if len(allKLines) < inc.Window {
return
}
var index = len(kLines) - 1
var kline = kLines[index]
var index = len(allKLines) - 1
var kline = allKLines[index]
if inc.EndTime != zeroTime && kline.EndTime.Before(inc.EndTime) {
return
}
var recentK = kLines[index-(inc.Window-1) : index+1]
var recentK = allKLines[index-(inc.Window-1) : index+1]
pv, err := calculateSMA(recentK, inc.Window, KLinePriceVolumeMapper)
if err != nil {
@ -93,7 +86,7 @@ func (inc *VWMA) calculateAndUpdate(kLines []types.KLine) {
inc.Values = inc.Values[MaxNumOfSMATruncateSize-1:]
}
inc.EndTime = kLines[index].EndTime.Time()
inc.EndTime = allKLines[index].EndTime.Time()
inc.EmitUpdate(vwma)
}
@ -103,7 +96,7 @@ func (inc *VWMA) handleKLineWindowUpdate(interval types.Interval, window types.K
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *VWMA) Bind(updater KLineWindowUpdater) {

13
pkg/indicator/wwma.go
View File

@ -1,8 +1,9 @@
package indicator
import (
"github.com/c9s/bbgo/pkg/types"
"time"
"github.com/c9s/bbgo/pkg/types"
)
// Refer: Welles Wilder's Moving Average
@ -56,7 +57,11 @@ func (inc *WWMA) Length() int {
return len(inc.Values)
}
func (inc *WWMA) calculateAndUpdate(allKLines []types.KLine) {
func (inc *WWMA) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *WWMA) CalculateAndUpdate(allKLines []types.KLine) {
if len(allKLines) < inc.Window {
// we can't calculate
return
@ -68,7 +73,7 @@ func (inc *WWMA) calculateAndUpdate(allKLines []types.KLine) {
doable = true
}
if doable {
inc.Update(k.Close.Float64())
inc.PushK(k)
inc.LastOpenTime = k.StartTime.Time()
inc.EmitUpdate(inc.Last())
}
@ -80,7 +85,7 @@ func (inc *WWMA) handleKLineWindowUpdate(interval types.Interval, window types.K
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *WWMA) Bind(updater KLineWindowUpdater) {

15
pkg/indicator/zlema.go
View File

@ -16,7 +16,7 @@ type ZLEMA struct {
zlema *EWMA
lag int
UpdateCallbacks []func(value float64)
updateCallbacks []func(value float64)
}
func (inc *ZLEMA) Index(i int) float64 {
@ -59,14 +59,19 @@ func (inc *ZLEMA) Update(value float64) {
var _ types.SeriesExtend = &ZLEMA{}
func (inc *ZLEMA) calculateAndUpdate(allKLines []types.KLine) {
func (inc *ZLEMA) PushK(k types.KLine) {
inc.Update(k.Close.Float64())
}
func (inc *ZLEMA) CalculateAndUpdate(allKLines []types.KLine) {
if inc.zlema == nil {
for _, k := range allKLines {
inc.Update(k.Close.Float64())
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
} else {
inc.Update(allKLines[len(allKLines)-1].Close.Float64())
k := allKLines[len(allKLines)-1]
inc.PushK(k)
inc.EmitUpdate(inc.Last())
}
}
@ -76,7 +81,7 @@ func (inc *ZLEMA) handleKLineWindowUpdate(interval types.Interval, window types.
return
}
inc.calculateAndUpdate(window)
inc.CalculateAndUpdate(window)
}
func (inc *ZLEMA) Bind(updater KLineWindowUpdater) {

4
pkg/indicator/zlema_callbacks.go
View File

@ -5,11 +5,11 @@ package indicator
import ()
func (inc *ZLEMA) OnUpdate(cb func(value float64)) {
inc.UpdateCallbacks = append(inc.UpdateCallbacks, cb)
inc.updateCallbacks = append(inc.updateCallbacks, cb)
}
func (inc *ZLEMA) EmitUpdate(value float64) {
for _, cb := range inc.UpdateCallbacks {
for _, cb := range inc.updateCallbacks {
cb(value)
}
}

2
pkg/indicator/zlema_test.go
View File

@ -45,7 +45,7 @@ func Test_ZLEMA(t *testing.T) {
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
zlema := ZLEMA{IntervalWindow: types.IntervalWindow{Window: 16}}
zlema.calculateAndUpdate(tt.kLines)
zlema.CalculateAndUpdate(tt.kLines)
last := zlema.Last()
assert.InDelta(t, tt.want, last, Delta)
assert.InDelta(t, tt.next, zlema.Index(1), Delta)

2
pkg/strategy/pivotshort/strategy.go
View File

@ -296,7 +296,7 @@ func preloadPivot(pivot *indicator.Pivot, store *bbgo.MarketDataStore) *types.KL
log.Debugf("updating pivot indicator: %d klines", len(*klines))
for i := pivot.Window; i < len(*klines); i++ {
pivot.Update((*klines)[0 : i+1])
pivot.CalculateAndUpdate((*klines)[0 : i+1])
}
log.Debugf("found %v previous lows: %v", pivot.IntervalWindow, pivot.Lows)