StochJDJ_Ya

//
// @author modified by Yanga
//
// This KDJ indicator is modification based on Stochastic
// 
// This script is released free of charge with no warranty
// Please leave a not to the author of this script if it is used
// whole or in part
//
study(title="StochJDJ_Ya", shorttitle="StochKDJ_Ya")
length = input(9, minval=1), smoothK = input(3, minval=1), smoothD = input(3, minval=1)
k = sma(stoch(close, high, low, length), smoothK)
d = sma(k, smoothD)
j = 3 * k-2 * d
plot(k, color=blue)
plot(d, color=orange)
plot(j, color=fuchsia)
h0 = hline(80)
h1 = hline(20)
h2 = hline(100)
h3 = hline(0)
fill(h0, h1, color=purple, transp=75)