RSI动态背离量化策略

/*backtest
start: 2024-04-25 00:00:00
end: 2025-04-23 08:00:00
period: 1d
basePeriod: 1d
exchanges: [{"eid":"Futures_Binance","currency":"DOGE_USDT"}]
*/

//@version=6
strategy("RSI Divergence Strategy - AliferCrypto", overlay=true, default_qty_type=strategy.percent_of_equity, default_qty_value=10)

// === RSI Settings ===
rsiLength      = input.int(14, minval=1, title="RSI Length", group="RSI Settings", tooltip="Number of periods for RSI calculation")
rsiSource      = input.source(close, title="RSI Source", group="RSI Settings", tooltip="Price source used for RSI calculation")

// === Divergence Settings ===
lookLeft       = input.int(5, minval=1, title="Pivot Lookback Left", group="Divergence Settings", tooltip="Bars to the left for pivot detection")
lookRight      = input.int(5, minval=1, title="Pivot Lookback Right", group="Divergence Settings", tooltip="Bars to the right for pivot detection")
rangeLower     = input.int(5, minval=1, title="Min Bars Between Pivots", group="Divergence Settings", tooltip="Minimum bars between pivots to validate divergence")
rangeUpper     = input.int(60, minval=1, title="Max Bars Between Pivots", group="Divergence Settings", tooltip="Maximum bars between pivots to validate divergence")

// === SL/TP Method ===
method         = input.string("Swing", title="SL/TP Method", options=["Swing", "ATR"], group="SL/TP Settings", tooltip="Choose between swing-based or ATR-based stop and target")

// === Swing Settings ===
swingLook      = input.int(20, minval=1, title="Swing Lookback (bars)", group="Swing Settings", tooltip="Bars to look back for swing high/low")
swingMarginPct = input.float(1.0, minval=0.0, title="Swing Margin (%)", group="Swing Settings", tooltip="Margin around swing levels as percentage of price")
rrSwing        = input.float(2.0, title="R/R Ratio (Swing)", group="Swing Settings", tooltip="Risk/reward ratio when using swing-based method")

// === ATR Settings ===
atrLen         = input.int(14, minval=1, title="ATR Length", group="ATR Settings", tooltip="Number of periods for ATR calculation")
atrMult        = input.float(1.5, minval=0.1, title="ATR SL Multiplier", group="ATR Settings", tooltip="Multiplier for ATR-based stop loss calculation")
rrAtr          = input.float(2.0, title="R/R Ratio (ATR)", group="ATR Settings", tooltip="Risk/reward ratio when using ATR-based method")

// === RSI Calculation ===
_d    = ta.change(rsiSource)
up    = ta.rma(math.max(_d, 0), rsiLength)
down  = ta.rma(-math.min(_d, 0), rsiLength)
rsi   = down == 0 ? 100 : up == 0 ? 0 : 100 - (100 / (1 + up / down))

// === Divergence Detection ===
defPl      = not na(ta.pivotlow(rsi, lookLeft, lookRight))
defPh      = not na(ta.pivothigh(rsi, lookLeft, lookRight))
rsiAtRR   = rsi[lookRight]
barsPl    = ta.barssince(defPl)
barsPl1   = barsPl[1]
inRangePL = barsPl1 >= rangeLower and barsPl1 <= rangeUpper
barsPh    = ta.barssince(defPh)
barsPh1   = barsPh[1]
inRangePH = barsPh1 >= rangeLower and barsPh1 <= rangeUpper
prevPlRsi   = ta.valuewhen(defPl, rsiAtRR, 1)
prevPhRsi   = ta.valuewhen(defPh, rsiAtRR, 1)
prevPlPrice = ta.valuewhen(defPl, low[lookRight], 1)
prevPhPrice = ta.valuewhen(defPh, high[lookRight], 1)
bullCond    = defPl and low[lookRight] < prevPlPrice and rsiAtRR > prevPlRsi and inRangePL
bearCond    = defPh and high[lookRight] > prevPhPrice and rsiAtRR < prevPhRsi and inRangePH

plotshape(bullCond, title="Bullish Divergence", style=shape.triangleup, location=location.belowbar, color=color.green, size=size.tiny)
plotshape(bearCond, title="Bearish Divergence", style=shape.triangledown, location=location.abovebar, color=color.red, size=size.tiny)

// === Entries ===
if bullCond
    strategy.entry("Long", strategy.long)
if bearCond
    strategy.entry("Short", strategy.short)

// === Pre-calculate SL/TP components ===
swingLow    = ta.lowest(low, swingLook)
swingHigh   = ta.highest(high, swingLook)
atrValue    = ta.atr(atrLen)

// === SL/TP Calculation & Exits ===
var float slPrice = na
var float tpPrice = na
var float rr      = na

// Long exits
if strategy.position_size > 0
    entryPrice = strategy.position_avg_price
    if method == "Swing"
        slPrice := swingLow * (1 - swingMarginPct / 100)
        rr      := rrSwing
    else
        slPrice := entryPrice - atrValue * atrMult
        rr      := rrAtr
    risk     = entryPrice - slPrice
    tpPrice  := entryPrice + risk * rr
    strategy.exit("Exit Long", from_entry="Long", stop=slPrice, limit=tpPrice)

// Short exits
if strategy.position_size < 0
    entryPrice = strategy.position_avg_price
    if method == "Swing"
        slPrice := swingHigh * (1 + swingMarginPct / 100)
        rr      := rrSwing
    else
        slPrice := entryPrice + atrValue * atrMult
        rr      := rrAtr
    risk     = slPrice - entryPrice
    tpPrice  := entryPrice - risk * rr
    strategy.exit("Exit Short", from_entry="Short", stop=slPrice, limit=tpPrice)

// === Plot SL/TP Levels ===
plot(strategy.position_size != 0 ? slPrice : na, title="Stop Loss", style=plot.style_linebr, color=color.red)
plot(strategy.position_size != 0 ? tpPrice : na, title="Take Profit", style=plot.style_linebr, color=color.green)

// === Alerts ===
alertcondition(bullCond, title="Bull RSI Divergence", message="Bullish RSI divergence detected")
alertcondition(bearCond, title="Bear RSI Divergence", message="Bearish RSI divergence detected")

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