Supertrend EMA Strategy.txt

//@version=4
study("Supertrend EMA Strategy", overlay = true, format=format.price, precision=2, resolution="")

Periods = input(title="ATR Period", type=input.integer, defval=10)
src = input(hl2, title="Source")
Multiplier = input(title="ATR Multiplier", type=input.float, step=0.1, defval=3.0)
changeATR= input(title="Change ATR Calculation Method ?", type=input.bool, defval=true)
showsignals = input(title="Show Buy/Sell Signals ?", type=input.bool, defval=true)
highlighting = input(title="Highlighter On/Off ?", type=input.bool, defval=true)
atr2 = sma(tr, Periods)
emaPeriods = input(title="EMA Periods", type=input.integer, defval=20)
emaSrc = ema(close, emaPeriods)

atr= changeATR ? atr(Periods) : atr2
up=src-(Multiplier*atr)
up1 = nz(up[1],up)
up := close[1] > up1 ? max(up,up1) : up
dn=src+(Multiplier*atr)
dn1 = nz(dn[1], dn)
dn := close[1] < dn1 ? min(dn, dn1) : dn
trend = 1
trend := nz(trend[1], trend)
trend := trend == -1 and close > dn1 ? 1 : trend == 1 and close < up1 ? -1 : trend

buySignal = trend == 1 and trend[1] == -1 and close >= emaSrc
sellSignal = trend == -1 and trend[1] == 1 and close < emaSrc

plotshape(buySignal and showsignals ? up : na, title="Buy", text="Buy", location=location.absolute, style=shape.labelup, size=size.tiny, color=color.green, textcolor=color.white, transp=0)
plotshape(sellSignal and showsignals ? dn : na, title="Sell", text="Sell", location=location.absolute, style=shape.labeldown, size=size.tiny, color=color.red, textcolor=color.white, transp=0)

alertcondition(buySignal, title="SuperTrend EMA Buy", message="SuperTrend EMA Buy!")
alertcondition(sellSignal, title="SuperTrend EMA Sell", message="SuperTrend EMA Sell!")