如何编程策略以忽略某些信号？答案

【问题标题】：How to program the strategy to ignore certain signals?如何编程策略以忽略某些信号？
【发布时间】：2022-06-28 17:55:03
【问题描述】：

//@version=5
strategy("My script")

uptrend = request.security(syminfo.tickerid, "60", (ta.ema(close, 9) > ta.ema(close, 21)))
downtrend = request.security(syminfo.tickerid, "60", (ta.ema(close, 9) < ta.ema(close, 21)))

buy = request.security(syminfo.tickerid, "5", ta.crossover(ta.ema(close, 9), ta.ema(close, 21)))
sell = request.security(syminfo.tickerid, "5", ta.crossunder(ta.ema(close, 9), ta.ema(close, 21)))

if uptrend
    if buy
        strategy.entry("buy", strategy.long)

if sell
    strategy.close("buy")

if downtrend
    if sell
        strategy.entry("sell", strategy.short)

if buy
    strategy.close("sell")

如图所示，在第一个信号出现后，如何执行脚本以忽略其余信号？

【问题讨论】：

标签： pine-script pinescript-v5

【解决方案1】：

//@version=5
strategy("My script")

var tradeplaced = 0
uptrend = request.security(syminfo.tickerid, "60", (ta.ema(close, 9) > ta.ema(close, 21)))
downtrend = request.security(syminfo.tickerid, "60", (ta.ema(close, 9) < ta.ema(close, 21)))

buy = request.security(syminfo.tickerid, "5", ta.crossover(ta.ema(close, 9), ta.ema(close, 21)))
sell = request.security(syminfo.tickerid, "5", ta.crossunder(ta.ema(close, 9), ta.ema(close, 21)))

if uptrend and uptrend[1]==false
    tradeplaced:=0
if downtrend and downtrend[1]==false
    tradeplaced:=0

if uptrend
    if buy and tradeplaced==0
        strategy.entry("buy", strategy.long)
        tradeplaced:=1
if sell
    strategy.close("buy")

if downtrend
    if sell and tradeplaced==0
        strategy.entry("sell", strategy.short)
        tradeplaced:=1
if buy
    strategy.close("sell")

Before After

【讨论】：