Độ lệch trung bình động kép kết hợp với chiến lược theo xu hướng chỉ báo ATR

/*backtest
start: 2023-10-16 00:00:00
end: 2023-11-15 00:00:00
period: 1h
basePeriod: 15m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=4
// **********************************************
// PtahX EMA/ATR Strategy Public Release
// EMA Strategy with ATR & "Fear Factor" built in 
// written by PtahX October 2019
// * modifications welcome 
// * please let me know if you improve it so I can continue to learn :) 
// * use at your own risk - I'm a new programmer and still learning
// * Best of luck on your trades!!

// Take Profit (TP) option based on ATR or MA Crossover 
//***********************************************

strategy(title="PtahX EMA/ATR Strategy", overlay=true, pyramiding=1, calc_on_every_tick=true, default_qty_value=1, initial_capital=10000, slippage=2)

//***************************** 
// Global Inputs
//***************************** 

fastMA = input(title="Fast Moving Average", defval=20, step=1)
slowMA = input(title="Slow Moving Average", defval=55, step=1)
source = input(close, title="Source")
atrLength = input(title="ATR Length", defval=14, minval=7, step=1)
slMultiplier = input(title="Stop Loss Multiple", type=input.float, defval=3, minval=1, step=0.2)
tpMultiplier = input(title= "Take Profit Multiple", type=input.float, defval=3, minval=1, step=0.2)
maPlot = input(true, title="Plot EMA?")
maCrossoverExit =  input(false, title="Exit with Slow MA Crossover?")
atrExit = input(true, title="Exit with ATR?")
//***********************************
// ATR
//***********************************
atr = atr(atrLength)


//***********************************
// Volatility Filter
//**********************************
// During uptrends the ATR indicator tends to post lower volatility. 
// During downtrends, the ATR indicator tends to post higher volatility

volatilityBullish = atr < atr[1] 
volatilityBearish = atr > atr[1]


//***********************************
// Moving Averages
//***********************************
    
// Double Line Plot Code (used for Entries & Exits not plotted by default)
fast = ema(source, fastMA)
slow = ema(source, slowMA)
maLong = crossover(fast, slow)
maShort = crossunder(fast, slow) 

// Single Line Plot Code
bullish = slow > slow[1]
bearish = slow < slow[1]
barColor = bullish ? color.green : bearish ? color.red : color.blue


//***************************** 
// Entries
//***************************** 

entryLong = maLong and volatilityBullish
entryShort = maShort and volatilityBearish

if entryLong
    sLoss = source - atr * slMultiplier
    strategy.entry("Long", strategy.long, qty=10)
    strategy.exit("Long Exit", "Long", stop=sLoss)


if entryShort
    sLoss = source + atr * slMultiplier
    tProfit = close > slowMA
    strategy.entry("Short", strategy.short, qty=10)
    strategy.exit("Short Exit", "Short", stop=sLoss)


//***************************** 
// Exits
//*****************************

exitLong = 0
exitShort = 0

if maCrossoverExit
    exitLong = maShort
    exitShort = maLong
    strategy.exit("Long Exit", "Long", when = exitLong)
    strategy.exit("Short Exit", "Short", when = exitShort)

if atrExit
    exitLong = source + atr * tpMultiplier
    exitShort = source - atr * tpMultiplier
    strategy.exit("Long Exit", "Long", limit = exitLong)
    strategy.exit("Short Exit", "Short", limit = exitShort)


//******************************
// ATR Based Exit/ Stop Plotting 
//******************************

// Stop Loss Calculations
longStopLoss = source - atr(atrLength) * slMultiplier
shortStopLoss = source + atr(atrLength) * slMultiplier

longTakeProfit = source - atr(atrLength) * slMultiplier
shortTakeProfit = source + atr(atrLength) * slMultiplier
  

//*********************************
//Chart Plotting
//*********************************

//ATR Based Stop Losses
plot(shortStopLoss, color=color.fuchsia, offset=0, transp=0, show_last=5, linewidth=2, style=plot.style_stepline, title="Short Stop Loss")
plot(longStopLoss, color=color.fuchsia, offset=0, transp=0, show_last=5, linewidth=2, style=plot.style_stepline, title="Long Stop Loss")


// Single Slow EMA Option
plot(slow and maPlot ? slow : na, title="EMA", color=barColor, linewidth=3)