কোয়াড্রাটিক ফিট ট্রেডিং সিগন্যাল কৌশল

/*backtest
start: 2023-08-23 00:00:00
end: 2023-09-22 00:00:00
period: 1h
basePeriod: 15m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=4
//
// ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ //

strategy(title = " Strategy Quadratic Semaphore ",
         shorttitle = "SQS",
         overlay = true,
         precision = 8,
         calc_on_order_fills = true,
         calc_on_every_tick = true,
         backtest_fill_limits_assumption = 0,
         default_qty_type = strategy.fixed,
         default_qty_value = 2,
         initial_capital = 10000,
         pyramiding=5,
         currency = currency.USD,
         linktoseries = true)

//
// ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ //

backTestSectionFrom = input(title = "═══════════════ From ═══════════════", defval = true, type = input.bool)

FromMonth         = input(defval = 1, title = "Month", minval = 1)
FromDay           = input(defval = 1, title = "Day", minval = 1)
FromYear          = input(defval = 2019, title = "Year", minval = 2014)

backTestSectionTo = input(title = "════════════════ To ════════════════", defval = true, type = input.bool)
ToMonth           = input(defval = 31, title = "Month", minval = 1)
ToDay             = input(defval = 12, title = "Day", minval = 1)
ToYear            = input(defval = 9999, title = "Year", minval = 2014)

Config            = input(title = "══════════════ Config ══════════════", defval = true, type = input.bool)
p = input(6)
length = input(30)
//
backTestPeriod() => (time > timestamp(FromYear, FromMonth, FromDay, 00, 00)) and (time < timestamp(ToYear, ToMonth, ToDay, 23, 59))
//
//
// ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ //

x1 = bar_index
x2 = sqrt(x1)
y = high
//
S11 = sum(x2,length) - sqrt(sum(x1,length)) / length  
S12 = sum(x1*x2,length) - (sum(x1,length) * sum(x2,length)) / length  
S22 = sum(sqrt(x2),length) - sqrt(sum(x2,length)) / length            
Sy1 = sum (y*x1,length) - (sum(y,length) * sum(x1,length)) / length   
Sy2 = sum (y*x2,length) - (sum(y,length) * sum(x2,length)) / length   
//
max1 = sma(x1,length) 
max2 = sma(x2,length)
may = sma(y,length)
b2 = ((Sy1 * S22) - (Sy2*S12))/(S22*S11 - sqrt(S12))
b3 = ((Sy2 * S11) - (Sy1 * S12))/(S22 * S11 - sqrt(S12))
b1 = may - b2*max1 - b3*max2
qr = b1 + b2*x1 + b3*x2
//
yl = low
//
Sy1l = sum(yl*x1,length) - (sum(yl,length) * sum(x1,length)) / length  
Sy2l = sum(yl*x2,length) - (sum(yl,length) * sum(x2,length)) / length  
//
mayl = sma(yl,length)
b2l = ((Sy1l * S22) - (Sy2l*S12))/(S22*S11 - sqrt(S12))
b3l = ((Sy2l * S11) - (Sy1l * S12))/(S22 * S11 - sqrt(S12))
b1l = mayl - b2l*max1 - b3l*max2
qrl = b1l + b2l*x1 + b3l*x2
//
period = round(p/2)+1
hh = qr[period]
ll = qrl[period]
countH = 0
countL = 0
buy=0
sell=0
//
for i = 1 to period-1
    if qr[i]<hh
        countH:=countH+1
    if qrl[i]>ll
        countL:=countL+1

for i = period+1 to p+1
    if qr[i]<hh
        countH:=countH+1
    if qrl[i]>ll
        countL:=countL+1

if countH==p
    pivotH = high[period]
    buy := 1
    
if countL==p
    pivotL = low[period]
    sell := 1
//    
plotshape(buy == 1 , text='💣', style=shape.arrowup, location=location.belowbar, color=#32CD32, textcolor=color.white, offset=0, transp=0,size=size.auto)
plotshape(sell == 1 , text='🔨', style=shape.arrowdown, location=location.abovebar, color=#FF0000, textcolor=color.white, offset=0, transp=0,size=size.auto)
//

if (backTestPeriod())
    strategy.entry("long", true, 1, when = buy == 1)
    strategy.entry("short", false, 1, when = sell == 1)