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[amibroker] AA vs. IB discrepancy



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As mentioned in a previous thread, I am getting a discrepancy between AA and IB for daily mutual fund data, although weekly is OK.  The data is OK with C in all fields.  Originally, I thought I solved the problem by assigning C to O, H, L but upon further checking this is not correct.  No matter what I try the daily AA is different from the daily IB.  The attached gifs show the AA and IB results for the Price Oscillator. 
 
The formula used for Osc is Osc = 100 * OscP(3, 10) and the AA filter is Filter = Status("LastBarInRange").
 
Would appreciate it if someone would duplicate what I am getting and, hopefully, find the cause for this discrepancy.  OscP() is a price oscillator calculated by taking the difference between two moving averages.  So why one timeframe works and one does not is beyond me.
 
Bill


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