Pine Script报错求助：ta.sma参数类型不匹配问题

报错原因 #

ta.sma()函数的length参数要求传入整数类型值，但你代码里的smoothK、smoothD、lengthRSI、lengthStoch都是用input.float()定义的浮点数类型，参数类型不匹配导致了这个错误。

修复方案 #

把这些周期类参数的input.float()替换为input.int()，因为均线长度、RSI周期这类参数本身就是整数，不需要浮点数类型。

修改后的完整代码 #

//@version=5
strategy("FingersCrossed Signals", overlay=true)

//ta.ema
ema3 = ta.ema(close,9)
ema4 = ta.ema(close,21)
long_ema = ta.crossover(ema3,ema4)
short_ema = ta.crossover(ema4,ema3)

//stochrsi
smoothK = input.int(3, minval=1)
smoothD = input.int(3, minval=1)
lengthRSI = input.int(14, minval=1)
lengthStoch = input.int(14, minval=1)
src = input(close, title="RSI Source")

rsi1 = ta.rsi(src, lengthRSI)
k = ta.sma(ta.stoch(rsi1, rsi1, rsi1, lengthStoch), smoothK)
d = ta.sma(k, smoothD)

data = (60-k[1])/2
data2 = (k[1]-40)/2

long_stoch = k[1] >= d[1] and k[2] <= d[2] and k <= 60 and k >= 10
short_stoch = k[1] <= d[1] and k[2] >= d[2] and k >= 40 and k <= 95

//entries
if (long_ema) 
    strategy.entry("buy", strategy.long)
if (ema3 > ema4 and long_stoch) // ema3 > ema4 means that crossover was already and uptrend is continuing 
    strategy.entry("buy+1", strategy.long)
if (short_ema) 
    strategy.entry("sell", strategy.short)

内容的提问来源于stack exchange，提问作者Cletis Klampett