Average Zigzag Range (AZR)Here is an attempt calculate Average Zigzag Range (AZR). This can be used similar to ATR. Using AZR instead of ATR for trailing stop calculation may yield better outcome in trend trading.
Logic is simple.
 
  Calculate zigzag based on  ZigzagLength 
  Calculate distance between each zigzag pivots
  Calculate simple moving average of last  MALength  pivots
  Use  DoubleMA  option to further smooth AZR using a  Secondary Moving Average 
