[amibroker] Rotation Script - average of 2 rankings?

["atilla" <atilla@xxxxxxxxx>]

Supposed I have two different criteria I want to rank my list of symbols for my rotation script by - Criteria A and Criteria B.  The values end up like this:

Criteria A & Criteria B have raw values (ie RSI, MACD, whatever, but they're distinct values and not related), the symbols are then ranked by those values to create the criteria ranking below.

Symbol   Criteria A (Ranking)  Criteria B (Ranking)
IBM         1                       5
AAPL        4                       1
GOOG        3                       3
INTC        5                       4
DELL        2                       2

Now I want to buy the symbol w/ the lowest average ranking, in this case DELL (2+2)/2 = 2.  I know how to flipflop PositionScore to buy the lowest, my question is, how can i rank across a watchlist prior to setting the PositionScore for the actual buy-sig ranking?

Thanks.



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