add RSL (Relative Strength Levy) indicator

[Luukeluuke]

Hi Dave, could you please add the RSL?
https://metatraderindicators.com/relative-strength-levy/

[DaveSkender]

On its face, this looks like a good one to add.

If anyone knows where Robert A. Levy published this recipe, please let me know:
Likely: Relative Strength Concept of Common Stock Price Forecasting, 1968

[DaveSkender]

In the end, Levy was just trying to make a point that strong stocks tend to stay strong while laggards tend to stay weak. It’s mostly just a thoughtful use of something like Rate of change to compare market segments or stocks within a sector.