Oscillator Average Average True Range is standard smoothed ATR represented as a colored histogram.

Growing values are drawn in green, the falling ones are in red.

It has two configurable parameters:

• ATR period - ATR calculation period
• Smoothing period - smoothing period

  
AATR = SMA(ATR, Smoothing period)
    

  
ATR - standard ATR to be calculated over the "ATR period"