autofib

study("AFEXT", overlay=true, max_bars_back= 89)
z = input (50)
p_offset=input(3)
charttf = input(true, title = "use chart timeframe?")
resin = input("240",type = string, title = "resolution")
res = charttf ? period : resin

b=security(tickerid,res,lowest(z))
c=security(tickerid,res,highest(z))

p1c = close > c[p_offset] ? true : false
p1 = security(tickerid,res,p1c)

p8c = close < b[p_offset] ? true : false
p8 = security(tickerid,res,p8c)

plotshape(p1, title = "greaterthan", style = shape.triangledown, location = location.abovebar, size = size.normal, color = red)
plotshape(p8, title = "lessthanrthan", style = shape.triangleup, location = location.belowbar, size = size.normal, color = green)

plot(b, color =red, style=line,linewidth = 3)
plot(c, color =green, style=line,linewidth = 3)