This Plots the Standard Deviation Price Band based on the Historical Volatility. SD 1, 2, 3.
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Uday C Santhakumar
//Created by UCSgears //Plots Standard deviation on pricechart based on Historical Volatility. //This Code will be revised when Implied Volatility is available in trading view. study(title="UCS_Standard Deviation-Historical Volatility", shorttitle="UCS_StdDev(HV)", overlay = true) length = input(10, minval=1) DaystoExpire = input (30, minval=1) stddev1=input(true,title="Standard Deviation 1") stddev2=input(true,title="Standard Deviation 2") stddev3=input(true,title="Standard Deviation 3") annual = 365 per = isintraday or isdaily and interval == 1 ? 1 : 7 hv = stdev(log(close / close[1]), length) * sqrt(annual / per) stdhv1 = close*hv*sqrt(DaystoExpire/365) stdhv2 = stdhv1*1.3971 stdhv3 = stdhv1*1.4675 Stdhv1u = plot(stddev1 ? (close+stdhv1):na, color = red, title = "1st Standard Deviation Upperband") Stdhv1d = plot(stddev1 ? (close-stdhv1):na, color = red, title = "1st Standard Deviation Lowerband") Stdhv2u = plot(stddev2 ? (close+stdhv2):na, color = blue, title = "2nd Standard Deviation Upperband") Stdhv2d = plot(stddev2 ? (close-stdhv2):na, color = blue, title = "2nd Standard Deviation Lowerband") Stdhv3u = plot(stddev3 ? (close+stdhv3):na, color = black, title = "3rd Standard Deviation Upperband") Stdhv3d = plot(stddev3 ? (close-stdhv3):na, color = black, title = "3rd Standard Deviation Lowerband") fill (Stdhv1u,Stdhv3u, color = red) fill (Stdhv1d,Stdhv3d, color = green)