RSI+9EMA

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © equity4life

//@version=4
study(title="RSI Equity4life", shorttitle="RSI+9EMA", format=format.price, precision=2, resolution="")

//RSI
len = input(14, minval=1, title="Length")
src = input(close, "Source", type = input.source)
up = rma(max(change(src), 0), len)
down = rma(-min(change(src), 0), len)
rsi = down == 0 ? 100 : up == 0 ? 0 : 100 - (100 / (1 + up / down))
plot(rsi, "RSI", color=color.black)

//Midline
th = input(50, title="threshold")
hline(th, title="Middle Line", color=color.black, linestyle=hline.style_dashed)

//Bands
band2 = hline(60, "Upper Band", color=#4CAF50, linestyle=hline.style_dashed)
band1 = hline(40, "Lower Band", color=#FF5252, linestyle=hline.style_dashed)

fill(band1, band2, color=color.fuchsia, transp=90)

//Moving Average
nine = ema(rsi(close, 14), 9)
plot(nine, color=#FF9800, linewidth=1, title='EMA')