The distance between each data point on an RRG tail is measured by the velocity – JDKRS(DEFAULT=Velocity) – so to calculate the tail length you can add them together. The longer the tail the more momentum in the relative trend.
For a 5 period tail you would use the following, with the  being the offset for the previous data point,  two days ago, etc.
In this example, the Dow 30 have been ranked by tail length, with the longest 3 (INTC, CVX & JPM) plotted on the RRG with the shortest 3 (HD, WMT & IBM with lowest momentum).
This reply was modified 3 months, 2 weeks ago by Darren.
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