Pine Script中NA与AND逻辑运算异常问题咨询

问题原因 #

在Pine Script的逻辑运算规则里，只要and表达式中存在na值，整个运算结果就会直接返回na，不会继续判断其余条件，这和你预期的「NA时忽略该条件、继续验证其余表达式」逻辑不符。

解决方案 #

把每个条件分支里的na替换为true——当某个指标被禁用（返回na）时，相当于该条件无需参与判断，默认视为满足（true），这样and运算就只会验证那些启用的指标条件。

修改后的代码如下：

// ON/OFF Indicator
// Buy Condition
MACDonoffbuy = useMACD ? macdLine > 0 : true  
ADXonfoffbuy = useADX ? ADX > thradx : true 
RSIonoffbuy = useRSI ? rsi >= overbought : true
Williamonoffbuy = useWilliam ? percentR >= -25 : true
Squeezeronoffbuy = useSqueezer ? sqzOff : true
// Sell Condition
MACDonoffsell = useMACD ? macdLine < 0 : true
ADXonfoffsell = useADX ? ADX > thradx : true 
RSIonoffsell = useRSI ? rsi <= overbought : true
Williamonoffsell = useWilliam ? percentR <= -25 : true
Squeezeronoffsell = useSqueezer ? sqzOff : true

// Final Combination 
buy = MACDonoffbuy and ADXonfoffbuy and RSIonoffbuy and Williamonoffbuy and Squeezeronoffbuy
sell = MACDonoffsell and ADXonfoffsell and RSIonoffsell and Williamonoffsell and Squeezeronoffsell

原理说明 #

• 当useMACD这类开关变量为false时，对应条件返回true，不会干扰后续and运算的结果
• 所有启用的指标条件必须同时满足，才会让buy或sell最终返回true

内容的提问来源于stack exchange，提问作者Ardani Hendarta