[RS]ADR channel V0
EXPERIMENTAL: needs validation if calculation is correct for the ADR. granted it has more use with optional timeframe.
study("[RS]ADR channel V0", overlay=true)
tf = input(title='Timeframe:', type=string, defval='D')
window = input(title='Time Window:', type=integer, defval=30)
USE_AVGCENTER = input(title='Use Average Center or Open:', type=bool, defval=false)
adr = security(tickerid, tf, sma(tr, window))
middle = security(tickerid, tf, USE_AVGCENTER ? avg(high, low) : open)
upper = middle + adr
lower = middle - adr
plot(middle, title='middle line', color=change(middle)!=0?na:black, linewidth=1)
plot(upper, title='upper line', color=change(upper)!=0?na:black, linewidth=1)
plot(lower, title='lower line', color=change(lower)!=0?na:black, linewidth=1)