Pine Script：当两个条件一个接一个满足时绘制标签

Question

一旦在多个条上一个接一个满足两个条件，我就会尝试绘制标签。

首先，4K-sma 与5K-sma 交叉，然后在下一次oneK-sma 与oneD-sma 交叉时，它会绘制一个标签。

ATM 脚本保存得很好，但没有绘制标签，而且我已经没有关于如何解决这个问题的想法。

oneK=sma(stoch(close, high, low, 11), 10)
oneD=sma(oneK, 4)
fourK=sma(stoch(close, high, low, 176), 160)
fiveK=sma(stoch(close, high, low, 352), 320)

test=bool(na)
fir=bool(na)
if (crossover(fourK,fiveK))
    test:=true
if (test==true) and crossover(oneK,oneD)
    fir:=true
    test:=false

plotshape(fir, style = shape.arrowup, location = location.belowbar, color=#ff4545, size=size.small)

Answer 1

问题是：

• 您在没有var关键字的情况下声明变量，因此它们在每个条形上都被初始化。
• 一旦fir设置为 true，您就再也不会将其重置为 false。

这将起作用：

//@version=4
study("SO 64706821", overlay=true, shorttitle="SO")

oneK  = sma(stoch(close, high, low, 11), 10)
oneD  = sma(oneK, 4)
fourK = sma(stoch(close, high, low, 176), 160)
fiveK = sma(stoch(close, high, low, 352), 320)

var bool test = na // Initializion occurs once, on first bar
bool fir = false   // Initializion occurs on every bar

if crossover(fourK,fiveK)
    test := true
    
if test and crossover(oneK,oneD)
    fir  := true
    test := false

plotshape(fir, style = shape.arrowup, location = location.belowbar, color=color.red, size=size.small)

// Background color to make it more clear where the signals occur, because there are so few.
bgcolor(fir ? color.yellow : na, transp=80)