Pine Script合并Wave Trend Oscillator与MACD时脚本无法解析报错求解

问题原因 #

你代码的核心错误有两点：

1. 开头的指标声明被注释，同时缺失Pine Script版本声明，导致编译器无法识别语法规则，解析input.string的选项参数时出错，对应你收到的报错信息。
2. 混用了Pine Script v4的过时语法，包括用数字指定plot样式、transp参数写法，在当前TradingView默认的v5环境下无法运行。

修正后完整可运行代码 #

//@version=5
indicator("WaveTrend + MACD", shorttitle="WT+MACD", overlay=false)

// Wave Trend 配置
n1 = input.int(10, "Channel Length")
n2 = input.int(21, "Average Length")
obLevel1 = input.int(60, "Over Bought Level 1")
obLevel2 = input.int(53, "Over Bought Level 2")
osLevel1 = input.int(-60, "Over Sold Level 1")
osLevel2 = input.int(-53, "Over Sold Level 2")
 
ap = hlc3 
esa = ta.ema(ap, n1)
d = ta.ema(math.abs(ap - esa), n1)
ci = (ap - esa) / (0.015 * d)
tci = ta.ema(ci, n2)
 
wt1 = tci
wt2 = ta.sma(wt1,4)

// Wave Trend 绘图
plot(0, color=color.gray)
plot(obLevel1, color=color.red)
plot(osLevel1, color=color.green)
plot(obLevel2, color=color.red, style=plot.style_dashed)
plot(osLevel2, color=color.green, style=plot.style_dashed)

plot(wt1, color=color.green)
plot(wt2, color=color.red, style=plot.style_dashed)
plot(wt1-wt2, color=color.new(color.blue, 80), style=plot.style_area)

// MACD 配置
fast_length = input.int(title="Fast Length", defval=12)
slow_length = input.int(title="Slow Length", defval=26)
src = input(close, title="Source")
signal_length = input.int(title="Signal Smoothing",  minval = 1, maxval = 50, defval = 9)
sma_source = input.string(title="Oscillator MA Type",  defval="EMA", options=["SMA", "EMA"])
sma_signal = input.string(title="Signal Line MA Type", defval="EMA", options=["SMA", "EMA"])

// MACD 颜色配置
col_macd = input(#2962FF, "MACD Line  ", group="Color Settings", inline="MACD")
col_signal = input(#FF6D00, "Signal Line  ", group="Color Settings", inline="Signal")
col_grow_above = input(#26A69A, "Above   Grow", group="Histogram", inline="Above")
col_fall_above = input(#B2DFDB, "Fall", group="Histogram", inline="Above")
col_grow_below = input(#FFCDD2, "Below Grow", group="Histogram", inline="Below")
col_fall_below = input(#FF5252, "Fall", group="Histogram", inline="Below")

// MACD 计算
fast_ma = sma_source == "SMA" ? ta.sma(src, fast_length) : ta.ema(src, fast_length)
slow_ma = sma_source == "SMA" ? ta.sma(src, slow_length) : ta.ema(src, slow_length)
macd = fast_ma - slow_ma
signal = sma_signal == "SMA" ? ta.sma(macd, signal_length) : ta.ema(macd, signal_length)
hist = macd - signal

// MACD 绘图
plot(hist, title="Histogram", style=plot.style_columns, color=(hist>=0 ? (hist[1] < hist ? col_grow_above : col_fall_above) : (hist[1] < hist ? col_grow_below : col_fall_below)))
plot(macd, title="MACD", color=col_macd)
plot(signal, title="Signal", color=col_signal)

内容的提问来源于stack exchange，提问作者Krishnendu Bhattacharyya