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Scanning for an Overlay of an Indicator
How would I write the code for an overlay of an indicator?
For instance, if I want to have Bollinger Bands around the 13 day Force Index and use a crossover of the lower Bollinger Band as the signal, how would I write the code for the crossover of the lower BB? Essentially, the concept is this:
[yesterday's FORCE(13) <yesterday's Lower BB(20,2) of FORCE 13] and
[today's FORCE(13) x Lower BB(20,2) of FORCE 13]
Help would be appreciated. Thanks!