CMO

//@version=4
study(title="CMO", shorttitle="ChandeMO", format=format.price, precision=2, resolution="")
length = input(10, minval=1)
src = input(close, "Source", type = input.source)
momm = change(src)
f1(m) => m >= 0.0 ? m : 0.0
f2(m) => m >= 0.0 ? 0.0 : -m
m1 = f1(momm)
m2 = f2(momm)
sm1 = sum(m1, length)
sm2 = sum(m2, length)
percent(nom, div) => 100 * nom / div
chandeMO = percent(sm1-sm2, sm1+sm2)
plot(chandeMO, "Chande MO", color=#2962FF)

hline(25, color=#787B86, linestyle=hline.style_dashed, title="Over Bought")
hline(-25,color=#787B86, linestyle=hline.style_dashed, title="Over sold")
hline(0, color=#787B86, linestyle=hline.style_dashed, title="zero line")