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Hi,
You need the reference function and the HHV function.
Check out the following two parts:
reference past/future values of the array
Trading system toolbox
SYNTAX
ref( ARRAY, period )
RETURNS
ARRAY
FUNCTION
References a previous or subsequent element in a ARRAY. A positive period
references "n" periods in the future; a negative period references "n"
periods ago.
EXAMPLE
The formula "ref( CLOSE, -14 )" returns the closing price 14 periods ago.
Thus, you could write the 14-day price rate-of-change (expressed in points)
as "C - ref( C, -14 )." The formula "ref( C, +14 )" returns the closing
price 12 periods ahead (this means looking up the future)
HHV
- highest high value
Lowest/Highest
SYNTAX
hhv( ARRAY, periods )
RETURNS
ARRAY
FUNCTION
Calculates the highest value in the ARRAY over the preceding periods
(periods includes the current day).
EXAMPLE
The formula "hhv( close, 4)" returns the highest closing price over the
preceding four periods; "hhv( high, 8)" returns the highest high price over
the preceding eight periods.
Tell me if you still have problems.
Best regards
Thomas Zmuck
www.tradingbasis.com <http://www.tradingbasis.com/>
-----Ursprüngliche Nachricht-----
Von: kscarth [mailto:kscarth@xxxxxxxxx]
Gesendet: Donnerstag, 28. Oktober 2004 21:56
An: amibroker@xxxxxxxxxxxxxxx
Betreff: [amibroker] To AFL Experts
I was trying to create an exploration which woulod look for trend
reversals. I want to use a method simular to an outside day reversal
but which would use the last ten days and then compare them to the
previous ten days and if the highest high and lowest low of the last
ten days are greater than the previous ten days would generate a
reversal signal. I am new to Amibroker AFL language and after looking
at the various AFL code descriptions cannot seem to find a way to
accomplish this. I would appreciate any help I can get on this.
Thanks in advance;
KRS
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