Normalised Dynamic Range is an indicator that identifies when an asset is going to trend. It uses the concept of Dynamic Range.
The indicator takes 3 look back periods (Default: 45, 30, 15) and calculates the dynamic range as follows:
Dynamic Range (DR) = Maximum(Close, Look back Period) / Minimum (Close, Look back Period)
This gives the Dynamic Range for a given look back period. Similarly 3 different DRs are calculated for 3 look back periods (Long, Mid and Short). These DRs are averaged to get Average Dynamic Range (ADR)
ADR = (Long DR + Mid DR + Short DR) / 3
Since, the short look back candles are also considered in the Mid and Long look backs, the average is weighted more towards the closer candles. This ADR, is now normalised over a relative look back period (Default: 10) to generate Normalised Dynamic Range (NDR). The formula for normalising is as follows: