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[amibroker] percentrank



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Hello,

I would like to create the excel percentrank function in AFL, but I stuck in the beginning.

The function is PERCENTRANK(A1:A100, 10). At first I have to count how many number are lesser then 10 in the range A1:A100. 
For example on 09.09.2009 the close price of AAPL was 171.14. I have to count how many times was the close price in the last 100 trade days lesser then on 09.09.2009.

How is it possible to code in AFL?

Regards,
tamas



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