pine-script - Pine Script (TradingView) - 如何将止损移动到获利水平

Question

TradingView 上有一个 Pine Script 代码，我们有 2 个获利水平和 2 个止损水平:tradingview.com .当第一个获利实现时，平仓一半，第一个止损移动到入场水平(盈亏平衡)。

您是否知道如何使用以下逻辑制作 3 个获利水平:

• 当达到 TP 1 时，SL 移动到盈亏平衡点

• 当达到 TP 2 时，SL 移动到 TP 2

• 到达TP 3时，退出仓位

非常感谢您的帮助!

//@version=4
strategy("SL1 Pips after TP1 (MA)", commission_type=strategy.commission.cash_per_order, overlay=true, default_qty_value=1000, initial_capital=100)

// Strategy
Buy  = input(true)
Sell = input(true)

// Date Range
start_year    = input(title='Start year'   ,defval=2020)
start_month   = input(title='Start month'  ,defval=1)
start_day     = input(title='Start day'    ,defval=1)
start_hour    = input(title='Start hour'   ,defval=0)
start_minute  = input(title='Start minute' ,defval=0)
end_time      = input(title='set end time?',defval=false)
end_year      = input(title='end year'     ,defval=2019)
end_month     = input(title='end month'    ,defval=12)
end_day       = input(title='end day'      ,defval=31)
end_hour      = input(title='end hour'     ,defval=23)
end_minute    = input(title='end minute'   ,defval=59)

// MA
ema_period = input(title='EMA period',defval=10)
wma_period = input(title='WMA period',defval=20)
ema        = ema(close,ema_period)
wma        = wma(close,wma_period)

// Entry Condition
buy =
 crossover(ema,wma) and
 nz(strategy.position_size) == 0 and Buy and
 time > timestamp(start_year, start_month, start_day, start_hour, start_minute) and
 (end_time?(time < timestamp(end_year, end_month, end_day, end_hour, end_minute)):true)
 
sell =
 crossunder(ema,wma) and
 nz(strategy.position_size) == 0 and Sell and
 time > timestamp(start_year, start_month, start_day, start_hour, start_minute) and
 (end_time?(time < timestamp(end_year, end_month, end_day, end_hour, end_minute)):true)

// Pips
pip = input(20)*10*syminfo.mintick

// Trading parameters //
var bool  LS  = na
var bool  SS  = na
var float EP  = na
var float TVL = na
var float TVS = na
var float TSL = na
var float TSS = na
var float TP1 = na
var float TP2 = na
var float SL1 = na
var float SL2 = na

if buy or sell and strategy.position_size == 0
    EP  := close
    SL1 := EP - pip     * (sell?-1:1)
    SL2 := EP - pip     * (sell?-1:1)
    TP1 := EP + pip     * (sell?-1:1)
    TP2 := EP + pip * 2 * (sell?-1:1) 
   
// current trade direction    
LS := buy  or strategy.position_size > 0
SS := sell or strategy.position_size < 0

// adjust trade parameters and trailing stop calculations
TVL := max(TP1,open) - pip[1]
TVS := min(TP1,open) + pip[1]
TSL := open[1] > TSL[1] ? max(TVL,TSL[1]):TVL 
TSS := open[1] < TSS[1] ? min(TVS,TSS[1]):TVS

if LS and high > TP1
    if open <= TP1
        SL2:=min(EP,TSL)
    
if SS and low < TP1
    if open >= TP1
        SL2:=max(EP,TSS)

// Closing conditions
close_long  = LS and open < SL2
close_short = SS and open > SL2

// Buy
strategy.entry("buy"  , strategy.long, when=buy and not SS)
strategy.exit ("exit1", from_entry="buy", stop=SL1, limit=TP1, qty_percent=50)
strategy.exit ("exit2", from_entry="buy", stop=SL2, limit=TP2)

// Sell
strategy.entry("sell" , strategy.short, when=sell and not LS)
strategy.exit ("exit3", from_entry="sell", stop=SL1, limit=TP1, qty_percent=50)
strategy.exit ("exit4", from_entry="sell", stop=SL2, limit=TP2)

// Plots
a=plot(strategy.position_size >  0 ? SL1 : na, color=#dc143c, style=plot.style_linebr)
b=plot(strategy.position_size <  0 ? SL1 : na, color=#dc143c, style=plot.style_linebr) 
c=plot(strategy.position_size >  0 ? TP1 : na, color=#00ced1, style=plot.style_linebr) 
d=plot(strategy.position_size <  0 ? TP1 : na, color=#00ced1, style=plot.style_linebr) 
e=plot(strategy.position_size >  0 ? TP2 : na, color=#00ced1, style=plot.style_linebr) 
f=plot(strategy.position_size <  0 ? TP2 : na, color=#00ced1, style=plot.style_linebr) 
g=plot(strategy.position_size >= 0 ? na  : EP, color=#ffffff, style=plot.style_linebr) 
h=plot(strategy.position_size <= 0 ? na  : EP, color=#ffffff, style=plot.style_linebr) 

plot(ema,title="ema",color=#fff176)
plot(wma,title="wma",color=#00ced1)

非常感谢您的帮助!

Answer 1

这是您需要的示例:

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © adolgov

// @description
// when tp1 is reached, sl is moved to break-even
// when tp2 is reached, sl is moved to tp1
// when tp3 is reached - exit

//@version=4
strategy("Stepped trailing strategy example", overlay=true)

// random entry condition
longCondition = crossover(sma(close, 14), sma(close, 28))
if (longCondition)
    strategy.entry("My Long Entry Id", strategy.long)

// sl & tp in points
sl = input(100)
tp1 = input(100)
tp2 = input(200)
tp3 = input(300)

curProfitInPts() =>
    if strategy.position_size > 0
        (high - strategy.position_avg_price) / syminfo.mintick
    else if strategy.position_size < 0
        (strategy.position_avg_price - low) / syminfo.mintick
    else
        0
        
calcStopLossPrice(OffsetPts) =>
    if strategy.position_size > 0
        strategy.position_avg_price - OffsetPts * syminfo.mintick
    else if strategy.position_size < 0
        strategy.position_avg_price + OffsetPts * syminfo.mintick
    else
        0
        
calcProfitTrgtPrice(OffsetPts) =>
    calcStopLossPrice(-OffsetPts)

getCurrentStage() =>
    var stage = 0
    if strategy.position_size == 0 
        stage := 0
    if stage == 0 and strategy.position_size != 0
        stage := 1
    else if stage == 1 and curProfitInPts() >= tp1
        stage := 2
    else if stage == 2 and curProfitInPts() >= tp2
        stage := 3
    stage

stopLevel = -1.
profitLevel = calcProfitTrgtPrice(tp3)

// based on current stage set up exit
// note: we use same exit ids ("x") consciously, for MODIFY the exit's parameters
curStage = getCurrentStage()
if curStage == 1
    stopLevel := calcStopLossPrice(sl)
    strategy.exit("x", loss = sl, profit = tp3, comment = "sl or tp3")
else if curStage == 2
    stopLevel := calcStopLossPrice(0)
    strategy.exit("x", stop = stopLevel, profit = tp3, comment = "breakeven or tp3")
else if curStage == 3
    stopLevel := calcStopLossPrice(-tp1)
    strategy.exit("x", stop = stopLevel, profit = tp3, comment = "tp1 or tp3")
else
    strategy.cancel("x")

它是如何工作的你可以看here