请求将Pine Script V1的ATR策略脚本转换为V5版本

我尝试手动将一份基于ATR的Pine Script V1策略脚本转换为V5版本，但由于V1与V5版本差异较大，多次尝试均出现大量错误，希望能获得帮助。原脚本代码如下：

// Pine Script V1 原代码
strategy(title="ATR Strategy", overlay = true,  commission_type=strategy.commission.percent,commission_value=0.075)
nATRPeriod = input(2)
nATRMultip = input(3.5)
xATR = atr(nATRPeriod)
nLoss = nATRMultip * xATR
xATRTrailingStop = iff(close > nz(xATRTrailingStop[1], 0) and close[1] > nz(xATRTrailingStop[1], 0), max(nz(xATRTrailingStop[1]), close - nLoss),
                    iff(close < nz(xATRTrailingStop[1], 0) and close[1] < nz(xATRTrailingStop[1], 0), min(nz(xATRTrailingStop[1]), close + nLoss), 
                        iff(close > nz(xATRTrailingStop[1], 0), close - nLoss, close + nLoss)))
pos =   iff(close[1] < nz(xATRTrailingStop[1], 0) and close > nz(xATRTrailingStop[1], 0), 1,
        iff(close[1] > nz(xATRTrailingStop[1], 0) and close < nz(xATRTrailingStop[1], 0), -1, nz(pos[1], 0))) 
color = pos == -1 ? red: pos == 1 ? green : blue 
plot(xATRTrailingStop, color=color, title="ATR Trailing Stop")

barbuy = close > xATRTrailingStop 
barsell = close < xATRTrailingStop 

strategy.entry("Long", strategy.long, when = barbuy) 
strategy.entry("Short", strategy.short, when = barsell) 

barcolor(barbuy? green:red)

转换后的Pine Script V5代码 #

// Pine Script V5 转换后代码
//@version=5
strategy(title="ATR Strategy", overlay = true, commission_type=strategy.commission.percent, commission_value=0.075)

nATRPeriod = input.int(2, title="ATR周期")
nATRMultip = input.float(3.5, title="ATR倍数")

xATR = ta.atr(nATRPeriod)
nLoss = nATRMultip * xATR

// 用var声明状态变量，保留历史值
var float xATRTrailingStop = na
xATRTrailingStop := ta.iff(close > ta.nz(xATRTrailingStop[1], 0) and close[1] > ta.nz(xATRTrailingStop[1], 0), 
                            math.max(ta.nz(xATRTrailingStop[1]), close - nLoss),
                            ta.iff(close < ta.nz(xATRTrailingStop[1], 0) and close[1] < ta.nz(xATRTrailingStop[1], 0), 
                                    math.min(ta.nz(xATRTrailingStop[1]), close + nLoss), 
                                    ta.iff(close > ta.nz(xATRTrailingStop[1], 0), close - nLoss, close + nLoss)))

var int pos = 0
pos := ta.iff(close[1] < ta.nz(xATRTrailingStop[1], 0) and close > ta.nz(xATRTrailingStop[1], 0), 1,
              ta.iff(close[1] > ta.nz(xATRTrailingStop[1], 0) and close < ta.nz(xATRTrailingStop[1], 0), -1, ta.nz(pos[1], 0))) 

// V5中颜色需使用color前缀
plot_color = pos == -1 ? color.red : pos == 1 ? color.green : color.blue
plot(xATRTrailingStop, color=plot_color, title="ATR Trailing Stop")

barbuy = close > xATRTrailingStop 
barsell = close < xATRTrailingStop 

strategy.entry("Long", strategy.long, when = barbuy) 
strategy.entry("Short", strategy.short, when = barsell) 

barcolor(barbuy ? color.green : color.red)

关键转换说明 #

• 函数前缀：V5要求所有技术分析类函数添加ta.前缀（如ta.atr()、ta.iff()、ta.nz()），数学函数使用math.前缀（如math.max()、math.min()）
• 输入类型：V5区分input.int()和input.float()，替代V1统一的input()，参数类型更明确
• 状态变量保留：使用var声明xATRTrailingStop和pos，确保变量在每个K线周期保留历史值，避免重复初始化
• 颜色常量：V5中颜色需使用color.前缀（如color.red），替代V1中直接使用的red等裸常量
• 语法规范：V5要求变量重新赋值使用:=而非=，明确区分初始化与赋值操作

内容的提问来源于stack exchange，提问作者cen329