def price = hlc3;

input reversalAmount = 1.5;

input reversalMode = {price, default percent};

 

def mode = if reversalMode == reversalMode.price then ZigZagTrendSign(price = price, reversalAmount = reversalAmount) else ZigZagTrendPercent(price = price, reversalAmount = reversalAmount);

def inflection = if reversalMode == reversalMode.price then if !IsNaN(ZigZagSign(price = price, reversalAmount = reversalAmount)) then 1 else 0 else if !IsNaN(ZigZagPercent(price = price, reversalAmount = reversalAmount)) then 1 else 0;

def trend = if inflection == 1 and mode == -1 then 1 else if inflection == 1 and mode == 1 then -1 else trend[1];


def upWaveVolume = if inflection == 1 and trend == 1 and close > open then volume else if inflection == 1 and trend == 1 and close <= open then 0 else if trend == 1 or (inflection == 1 and trend == -1 and close >= open) then upWaveVolume[1] + volume else 0;

plot upvol = upWaveVolume;