Average Percentage True Range indicator with MA adjustments is an extended version of the Average Percentage True Range indicator described in Stock&Commodities (November 2015).
It has two configurable parameters:
- Period - calculation period
- MA method - МА calculation method
Calculation:
APTR = 100.0 * MA(PTR, Period, MA method)
where:
PTR = Max(s1,s2,s3)
s1 = 2.0 * (High-Low) / (High+Low)
s2 = 2.0 * (High-PrevClose) / (High+PrevClose)
s3 = 2.0 * (Low-PrevClose) / (3.0*Low-Prevlose)

Fig. 1. Average Percentage True Range, Method = Simple

Fig. 2. Average Percentage True Range, Method = Exponential

Fig. 3. Average Percentage True Range, Method = Smoothed

Fig. 4. Average Percentage True Range, Method = Linear weighted