无法为 pine-script Elliot Wave 指标调用“绘图”错误

Question

我似乎找不到解决以下 2 个错误的解决方案

26:0 的错误无法调用带有“标题”=字符串的“情节”。参数的类型应该是：const string； 36:0 处的错误无法使用“title”=series[string] 调用“plot”。参数的类型应该是：const string

这是我目前的代码，如果有人能指出我正确的方向，那将是一个很大的帮助

//@version=4
study("Elliot Wave", overlay=true)

// Define the swing high and low points
var swingHigh = high >= high[1] and high >= high[-1] and high > high[-2]
var swingLow = low <= low[1] and low <= low[-1] and low < low[-2]

// Initialize variables
var trend = 0.0
var direction = 0.0
var lastHigh = 0.0
var lastLow = 0.0
var waveCount = 0
var lastWaveHigh = 0.0
var lastWaveLow = 0.0

// Loop through the price data and identify the waves
for i = 2 to bar_index
    if swingHigh[i]
        if trend == -1
            // We have a wave completion, mark the end point
            lastWaveHigh := lastHigh
            plot(lastWaveHigh, "Wave " + tostring(waveCount), color=color.purple, linewidth=2, style=plot.style_stepline)
            waveCount += 1
        // New wave started, mark the start point
        lastHigh := high[i]
        trend := 1
        direction := -1
    if swingLow[i]
        if trend == 1
            // We have a wave completion, mark the end point
            lastWaveLow := lastLow
            plot(lastWaveLow, "Wave " + tostring(waveCount), color=color.purple, linewidth=2, style=plot.style_stepline)
            waveCount += 1
        // New wave started, mark the start point
        lastLow := low[i]
        trend := -1
        direction := 1

// Plot the wave direction for bullish trend
var lastWaveHighIndex = bar_index - barssince(swingHigh)
plot(lastWaveHigh + direction * (bar_index - lastWaveHighIndex), "Bullish Wave", color=color.green, linewidth=2, style=plot.style_stepline)

// Plot the wave direction for bearish trend
var lastWaveLowIndex = bar_index - barssince(swingLow)
plot(lastWaveLow + direction * (bar_index - lastWaveLowIndex), "Bearish Wave", color=color.red, linewidth=2, style=plot.style_stepline)```


 I have tried moving the plot calls inside the corresponding if statements. however it caused another error entirely.

Cannot use 'plot' in local scope.;

Answer 1

在 pinescript 中，您不能在局部范围内使用绘图（在 if 或 for 循环中）。
然后，对于情节，你不能使用标题变化的“变量”，它必须是一个常量字符串=一个不能像“我的字符串示例”那样改变的字符串。
请参阅：https://www.tradingview.com/pine-script-reference/v5/#fun_plot