条件变化时发出警报条件问题

Question

我成为这个网站的会员就是为了问这个问题。如果您能帮我解决这个问题，我会很高兴。 我不是程序员，没有任何经验。这是 Tradingview 的 pine 脚本的一部分。

下面是原始脚本，我希望能够在条件变化时向其添加警报，即买入和卖出的警报消息。 我能够写这个：

alertcondition(Greenbar1 and Greenbar2, title="Buy", message="buy message")
alertcondition(Redbar1 and Redbar2, title="Sell", message="sell message")

但也想添加这样的东西。

changeCond

如

alertcondition(buySignal, title="SuperTrend Buy", message="SuperTrend Buy!") alertcondition(sellSignal, title="SuperTrend Sell", message="SuperTrend Sell!") changeCond = trend != trend[1] alertcondition(changeCond, title="SuperTrend Direction Change", message="SuperTrend has changed direction!")

正如您在上面看到的，有三种警报信号，一种是买入，一种是卖出，一种是方向改变时的警报信号。我希望能够对上面的脚本执行相同的操作。 下面是原代码：

---

//@version=4
//By Glaz, Modified
//
study("QQE MOD")
RSI_Period = input(6, title='RSI Length')
SF = input(5, title='RSI Smoothing')
QQE = input(3, title='Fast QQE Factor')
ThreshHold = input(3, title="Thresh-hold")
//

src = input(close, title="RSI Source")
//

//
Wilders_Period = RSI_Period * 2 - 1


Rsi = rsi(src, RSI_Period)
RsiMa = ema(Rsi, SF)
AtrRsi = abs(RsiMa[1] - RsiMa)
MaAtrRsi = ema(AtrRsi, Wilders_Period)
dar = ema(MaAtrRsi, Wilders_Period) * QQE

longband = 0.0
shortband = 0.0
trend = 0

DeltaFastAtrRsi = dar
RSIndex = RsiMa
newshortband = RSIndex + DeltaFastAtrRsi
newlongband = RSIndex - DeltaFastAtrRsi
longband := RSIndex[1] > longband[1] and RSIndex > longband[1] ? 
   max(longband[1], newlongband) : newlongband
shortband := RSIndex[1] < shortband[1] and RSIndex < shortband[1] ? 
   min(shortband[1], newshortband) : newshortband
cross_1 = cross(longband[1], RSIndex)
trend := cross(RSIndex, shortband[1]) ? 1 : cross_1 ? -1 : nz(trend[1], 1)
FastAtrRsiTL = trend == 1 ? longband : shortband
////////////////////


length = input(50, minval=1, title="Bollinger Length")
mult = input(0.35, minval=0.001, maxval=5, step=0.1, title="BB Multiplier")
basis = sma(FastAtrRsiTL - 50, length)
dev = mult * stdev(FastAtrRsiTL - 50, length)
upper = basis + dev
lower = basis - dev
color_bar = RsiMa - 50 > upper ? #00c3ff : RsiMa - 50 < lower ? #ff0062 : color.gray


//
// Zero cross
QQEzlong = 0
QQEzlong := nz(QQEzlong[1])
QQEzshort = 0
QQEzshort := nz(QQEzshort[1])
QQEzlong := RSIndex >= 50 ? QQEzlong + 1 : 0
QQEzshort := RSIndex < 50 ? QQEzshort + 1 : 0
//  

Zero = hline(0, color=color.white, linestyle=hline.style_dotted, linewidth=1)

////////////////////////////////////////////////////////////////

RSI_Period2 = input(6, title='RSI Length')
SF2 = input(5, title='RSI Smoothing')
QQE2 = input(1.61, title='Fast QQE2 Factor')
ThreshHold2 = input(3, title="Thresh-hold")

src2 = input(close, title="RSI Source")
//

//
Wilders_Period2 = RSI_Period2 * 2 - 1


Rsi2 = rsi(src2, RSI_Period2)
RsiMa2 = ema(Rsi2, SF2)
AtrRsi2 = abs(RsiMa2[1] - RsiMa2)
MaAtrRsi2 = ema(AtrRsi2, Wilders_Period2)
dar2 = ema(MaAtrRsi2, Wilders_Period2) * QQE2
longband2 = 0.0
shortband2 = 0.0
trend2 = 0

DeltaFastAtrRsi2 = dar2
RSIndex2 = RsiMa2
newshortband2 = RSIndex2 + DeltaFastAtrRsi2
newlongband2 = RSIndex2 - DeltaFastAtrRsi2
longband2 := RSIndex2[1] > longband2[1] and RSIndex2 > longband2[1] ? 
   max(longband2[1], newlongband2) : newlongband2
shortband2 := RSIndex2[1] < shortband2[1] and RSIndex2 < shortband2[1] ? 
   min(shortband2[1], newshortband2) : newshortband2
cross_2 = cross(longband2[1], RSIndex2)
trend2 := cross(RSIndex2, shortband2[1]) ? 1 : cross_2 ? -1 : nz(trend2[1], 1)
FastAtrRsi2TL = trend2 == 1 ? longband2 : shortband2


//
// Zero cross
QQE2zlong = 0
QQE2zlong := nz(QQE2zlong[1])
QQE2zshort = 0
QQE2zshort := nz(QQE2zshort[1])
QQE2zlong := RSIndex2 >= 50 ? QQE2zlong + 1 : 0
QQE2zshort := RSIndex2 < 50 ? QQE2zshort + 1 : 0
//  

hcolor2 = RsiMa2 - 50 > ThreshHold2 ? color.silver :
   RsiMa2 - 50 < 0 - ThreshHold2 ? color.silver : na
plot(FastAtrRsi2TL - 50, title='QQE Line', color=color.white, transp=0, linewidth=2)
plot(RsiMa2 - 50, color=hcolor2, transp=50, title='Histo2', style=plot.style_columns)

Greenbar1 = RsiMa2 - 50 > ThreshHold2
Greenbar2 = RsiMa - 50 > upper

Redbar1 = RsiMa2 - 50 < 0 - ThreshHold2
Redbar2 = RsiMa - 50 < lower
plot(Greenbar1 and Greenbar2 == 1 ? RsiMa2 - 50 : na, title="QQE Up", style=plot.style_columns, color=#00c3ff, transp=0)
plot(Redbar1 and Redbar2 == 1 ? RsiMa2 - 50 : na, title="QQE Down", style=plot.style_columns, color=#ff0062, transp=0)

Answer 1

顶，这也正是我要找的。

Answer 2

试试这个方法：

alertcondition(Greenbar1, title="Greenbar1", message="QQE Up1!") 
alertcondition(Greenbar2, title="Greenbar2", message="QQE Up2!") 
alertcondition(Redbar1, title="RedBar1", message="QQE Up1!")
alertcondition(Redbar2, title="RedBar2", message="QQE Up2!")