双重反转震荡带趋势跟踪策略

                
                    /*backtest
start: 2024-01-01 00:00:00
end: 2024-01-24 00:00:00
period: 1h
basePeriod: 15m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=4
////////////////////////////////////////////////////////////
//  Copyright by HPotter v1.0 21/09/2020
// This is combo strategies for get a cumulative signal. 
//
// First strategy
// This System was created from the Book "How I Tripled My Money In The 
// Futures Market" by Ulf Jensen, Page 183. This is reverse type of strategies.
// The strategy buys at market, if close price is higher than the previous close 
// during 2 days and the meaning of 9-days Stochastic Slow Oscillator is lower than 50. 
// The strategy sells at market, if close price is lower than the previous close price 
// during 2 days and the meaning of 9-days Stochastic Fast Oscillator is higher than 50.
//
// Second strategy
//  Stock market moves in a highly chaotic way, but at a larger scale, the movements 
// follow a certain pattern that can be applied to shorter or longer periods of time 
// and we can use Fractal Chaos Bands Indicator to identify those patterns. Basically, 
// the Fractal Chaos Bands Indicator helps us to identify whether the stock market is 
// trending or not. When a market is trending, the bands will have a slope and if market 
// is not trending the bands will flatten out. As the slope of the bands decreases, it 
// signifies that the market is choppy, insecure and variable. As the graph becomes more 
// and more abrupt, be it going up or down, the significance is that the market becomes 
// trendy, or stable. Fractal Chaos Bands Indicator is used similarly to other bands-indicator 
// (Bollinger bands for instance), offering trading opportunities when price moves above or 
// under the fractal lines.
//
// The FCB indicator looks back in time depending on the number of time periods trader selected 
// to plot the indicator. The upper fractal line is made by plotting stock price highs and the 
// lower fractal line is made by plotting stock price lows. Essentially, the Fractal Chaos Bands 
// show an overall panorama of the price movement, as they filter out the insignificant fluctuations 
// of the stock price.
//
// WARNING:
// - For purpose educate only
// - This script to change bars colors.
////////////////////////////////////////////////////////////
Reversal123(Length, KSmoothing, DLength, Level) =>
    vFast = sma(stoch(close, high, low, Length), KSmoothing) 
    vSlow = sma(vFast, DLength)
    pos = 0.0
    pos := iff(close[2] < close[1] and close > close[1] and vFast < vSlow and vFast > Level, 1,
	         iff(close[2] > close[1] and close < close[1] and vFast > vSlow and vFast < Level, -1, nz(pos[1], 0))) 
	pos

fractalUp(pattern) =>
    p = high[pattern+1]
    okl = 1
    okr = 1
    res = 0.0
	for i = pattern to 1
		okl := iff(high[i] < high[i+1] and okl == 1 , 1, 0)
	for i = pattern+2 to pattern*2+1
		okr := iff(high[i] < high[i-1] and okr == 1, 1, 0)
	res := iff(okl == 1 and okr == 1, p, res[1])
    res

fractalDn(pattern) =>
    p = low[pattern+1]
    okl = 1
    okr = 1
    res =0.0
	for i = pattern to 1
		okl := iff(low[i] > low[i+1] and okl == 1 , 1, 0)
	for i = pattern+2 to pattern*2+1
		okr := iff(low[i] > low[i-1] and okr == 1, 1, 0)
	res := iff(okl == 1 and okr == 1, p, res[1])
    res

FCB(Pattern) =>
    pos = 0.0
    xUpper = fractalUp(Pattern)
    xLower = fractalDn(Pattern)    
    pos := iff(close > xUpper, 1,
             iff(close < xLower, -1, nz(pos[1], 0))) 
    pos

strategy(title="Combo Backtest 123 Reversal & Fractal Chaos Bands", shorttitle="Combo", overlay = true)
Length = input(15, minval=1)
KSmoothing = input(1, minval=1)
DLength = input(3, minval=1)
Level = input(50, minval=1)
//-------------------------
Pattern = input(1, minval=1)
reverse = input(false, title="Trade reverse")
posReversal123 = Reversal123(Length, KSmoothing, DLength, Level)
posFCB = FCB(Pattern)
pos = iff(posReversal123 == 1 and posFCB == 1 , 1,
	   iff(posReversal123 == -1 and posFCB == -1, -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)	 
if (possig == 0) 
    strategy.close_all()
barcolor(possig == -1 ? #b50404: possig == 1 ? #079605 : #0536b3 )
                
            

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