ThinkScript: Moving AVG Crossover

avgcross.ts

# Moving Average Crossover With Arrows, Alerts, Crossing Count and Bubble at Cross
# Mobius
# Chat Room Request 01.25.2017
# Modified a bit by BenTen

input price = close;
input fastLength = 34;
input slowLength = 50;
input averageType = AverageType.EXPONENTIAL;

plot FastMA = MovingAverage(averageType, price, fastLength);
plot SlowMA = MovingAverage(averageType, price, slowLength);
FastMA.SetDefaultColor(GetColor(1));
SlowMA.SetDefaultColor(GetColor(2));

plot ArrowUp = if FastMA crosses above SlowMA
               then low
               else double.nan;
     ArrowUP.SetPaintingStrategy(PaintingStrategy.Arrow_UP);
     ArrowUP.SetLineWeight(3);
     ArrowUP.SetDefaultColor(Color.Green);
plot ArrowDN = if FastMA crosses below SlowMA
               then high
               else double.nan;
     ArrowDN.SetPaintingStrategy(PaintingStrategy.Arrow_DOWN);
     ArrowDN.SetLineWeight(3);
     ArrowDN.SetDefaultColor(Color.Red);
Alert(ArrowUp, " ", Alert.Bar, Sound.Chimes);
Alert(ArrowDN, " ", Alert.Bar, Sound.Bell);

AddCloud(FastMA, SlowMA, Color.GREEN, Color.RED);
# End Code