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Re: [amibroker] TASC 2004 Readers Choice Awards



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Hopefully a scripting xpert can help me get a handle on this.

I'm not familiar with scripting but was delighted to find the new 
AFL do-while, for etc. statements could help me realize some new 
analysis. 

I'd like to define a function f that calculates statistical 
historical volatility:

f(n) = StDev(Log(C/Ref(C,-1),n)

(this formula mixes traditional math notation "f(n) =" with
AFL) 

The variable n determines the lookback period and of course, further 
down the indicator, I'd like to be able to call say f(3)
(3-period hist. volatility) when n is 3 etc. 

Now how do I code this? I better not bore you with the countless 
messy codes I tried so far, but they all lead to some error message, 
mostly re. mismatches in numbers and arrays.

Just getting this one straight will probably open the door for me. 
Thanks in advance for any help.

Treliff



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