MACD-Tesla

study(title="Moving Average Convergence/Divergence", shorttitle="Tesla-MACD")
source = close
fastLength = input(12, minval=1), slowLength=input(26,minval=1)
signalLength=input(9,minval=1)
fastMA = ema(source, fastLength)
slowMA = ema(source, slowLength)
macd = fastMA - slowMA
signal = sma(macd, signalLength)
hist = macd - signal
plot(hist, color=red, style=histogram)
plot(macd, color=blue)
plot(signal, color=orange)