The related article is copyrighted material from
Stocks & Commodities Mar 2010
You can use in the xPrice any series: Open, High, Low, Close, HL2, HLC3, OHLC4 and ect...
Stocks & Commodities Mar 2010
You can use in the xPrice any series: Open, High, Low, Close, HL2, HLC3, OHLC4 and ect...
//////////////////////////////////////////////////////////// // Copyright by HPotter v1.0 02/10/2014 // The related article is copyrighted material from // Stocks & Commodities Mar 2010 // You can use in the xPrice any series: Open, High, Low, Close, HL2, HLC3, OHLC4 and ect... //////////////////////////////////////////////////////////// study(title="Bandpass Filter") Length = input(20, minval=1) Delta = input(0.5) xPrice = hl2 hline(0, color=blue, linestyle=line) beta = cos(3.14 * (360 / Length) / 180) gamma = 1 / cos(3.14 * (720 * Delta / Length) / 180) alpha = gamma - sqrt(gamma * gamma - 1) BP = 0.5 * (1 - alpha) * (xPrice - xPrice[2]) + beta * (1 + alpha) * nz(BP[1]) - alpha * nz(BP[2]) plot(BP, color=red, title="Bandpass Filter")