自己

//version=5
indicator("CVD + Delta + OBV + A/D Signals", overlay=true)

// 1. Volume Profile 设置
profileRange = input.timeframe("D", "Volume Profile 周期")
vp = request.security(syminfo.tickerid, profileRange, volume)

// 2. 计算 Delta Volume
delta = volume * (close > open ? 1 : close < open ? -1 : 0)
cumDelta = ta.cum(delta)

// 3. 计算 CVD（累计成交量差）
buyVol = volume * (close > open ? 1 : 0)
sellVol = volume * (close < open ? 1 : 0)
cvd = ta.cum(buyVol - sellVol)

// 4. OBV 和 A/D 线
obv = ta.obv
ad = ta.accdist

// 5. 绘制信号
buySignal = ta.crossover(cvd, cumDelta) and close > ta.valuewhen(ta.highest(vp, 1), close, 0)
sellSignal = ta.crossunder(cvd, cumDelta) and close < ta.valuewhen(ta.lowest(vp, 1), close, 0)

plotshape(buySignal, style=shape.triangleup, color=color.green, size=size.small)
plotshape(sellSignal, style=shape.triangledown, color=color.red, size=size.small)

// 6. 可视化
plot(cvd, "CVD", color.blue)
plot(cumDelta, "Cumulative Delta", color.orange)
plot(obv, "OBV", color.purple, display=display.data_window)
plot(ad, "A/D Line", color.teal, display=display.data_window)