ドンチャンチャネル指標に基づいて開発された定量取引戦略

/*backtest
start: 2024-01-04 00:00:00
end: 2024-02-03 00:00:00
period: 1h
basePeriod: 15m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=2
////////////////////////////////////////////////////////////
//  Copyright by HPotter v1.0 12/02/2018
// The Donchian Channel was developed by Richard Donchian and it could be compared 
// to the Bollinger Bands. When it comes to volatility analysis, the Donchian Channel 
// Width was created in the same way as the Bollinger Bandwidth technical indicator was.
//
// As was mentioned above the Donchian Channel Width is used in technical analysis to measure 
// volatility. Volatility is one of the most important parameters in technical analysis. 
// A price trend is not just about a price change. It is also about volume traded during this 
// price change and volatility of a this price change. When a technical analyst focuses his/her 
// attention solely on price analysis by ignoring volume and volatility, he/she only sees a part 
// of a complete picture only. This could lead to a situation when a trader may miss something and 
// lose money. Lets take a look at a simple example how volatility may help a trader:
//
//    Most of the price based technical indicators are lagging indicators.
//    When price moves on low volatility, it takes time for a price trend to change its direction and 
// it could be ok to have some lag in an indicator.
//    When price moves on high volatility, a price trend changes its direction faster and stronger. 
// An indicator's lag acceptable under low volatility could be financially suicidal now - Buy/Sell signals could be generated when it is already too late.
//
// Another use of volatility - very popular one - it is to adapt a stop loss strategy to it:
//    Smaller stop-loss recommended in low volatility periods. If it is not done, a stop-loss could 
// be generated when it is too late.
//    Bigger stop-loss recommended in high volatility periods. If it is not done, a stop-loss could 
// be triggered too often and you may miss good trades.
//
//You can change long to short in the Input Settings
//WARNING:
//- For purpose educate only
//- This script to change bars colors.
////////////////////////////////////////////////////////////
strategy(title="Donchian Channel Width Strategy")
length = input(50, minval=1)
smoothe = input(50, minval=1)
reverse = input(false, title="Trade reverse")
xUpper = highest(high, length)
xLower = lowest(low, length)
xDonchianWidth = xUpper - xLower
xSmoothed = sma(xDonchianWidth, smoothe)
pos = iff(xDonchianWidth > xSmoothed, -1,
       iff(xDonchianWidth < xSmoothed, 1, nz(pos[1], 0))) 
possig = iff(reverse and pos == 1, -1,
          iff(reverse and pos == -1, 1, pos))	   
if (possig == 1) 
    strategy.entry("Long", strategy.long)
if (possig == -1)
    strategy.entry("Short", strategy.short)	   	    
barcolor(possig == -1 ? red: possig == 1 ? green : blue )  
plot(xDonchianWidth, color=blue, title="DCW")
plot(xSmoothed, color=red, title="sDCW")