Advance/Decline Line

//@version=6
indicator("Advance/Decline Line Analysis", shorttitle="A/D Line", overlay=false) 
 
// Input Parameters 
advancingSymbol = input.symbol("NYSE:ADVN", title="Advancing Stocks Symbol") 
decliningSymbol = input.symbol("NYSE:DECL", title="Declining Stocks Symbol") 
smoothingLength = input.int(20, minval=1, title="Smoothing Length") 
showMA = input.bool(true, title="Show Moving Average") 
alertOn = input.bool(true, title="Enable Alerts") 
 
// Fetch advancing and declining stocks data 
advancing = request.security(advancingSymbol, "D", close) 
declining = request.security(decliningSymbol, "D", close) 
 
// Calculate Net Advances 
netAdvances = advancing - declining 
 
// Calculate A/D Line (Cumulative Sum) 
adLine = ta.cum(netAdvances) 
 
// Calculate Moving Average of A/D Line 
adLineMA = ta.sma(adLine, smoothingLength) 
 
// Detect Divergence 
priceHigher = close > close[1] 
adLineLower = adLine < adLine[1] 
bearishDivergence = priceHigher and adLineLower 
 
priceLower = close < close[1] 
adLineHigher = adLine > adLine[1] 
bullishDivergence = priceLower and adLineHigher 
 
// Plotting 
plot(adLine, title="A/D Line", color=color.blue, linewidth=2) 
plot(showMA ? adLineMA : na, title="A/D Line MA", color=color.orange, linewidth=1) 
 
// Plot divergence signals 
plotshape(bearishDivergence and alertOn ? adLine : na, title="Bearish Divergence",  
    location=location.absolute, style=shape.triangledown, color=color.red, size=size.small) 
plotshape(bullishDivergence and alertOn ? adLine : na, title="Bullish Divergence",  
    location=location.absolute, style=shape.triangleup, color=color.green, size=size.small) 
 
// Alerts 
if alertOn 
    if bearishDivergence 
        alert("Bearish Divergence Detected", alert.freq_once_per_bar) 
    if bullishDivergence 
        alert("Bullish Divergence Detected", alert.freq_once_per_bar