[amibroker] Detrending... log

["Louis Préfontaine" <rockprog80@xxxxxxxxx>]

I am trying to build a formula to "detrend" the market.

What I want to set is something like this

Close of day 0  *   ( log  (open day2/open day 1)  - average log return of every day of the data available.

Anybody can do that?

Thanks,

Louis

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