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As you found, Peak/Trough use the Zig-Zag function. The problem is the
zig-zag function looks into the future and is not tradeable is
real-time. You will get fabulous backtests though.
The reason zig-zag looks into the future is because it "waits" for the
specified % change to happen. Let's say you set it to 5% zigzag. After
the market has changed direction for at least 5% is GOES BACK and marks
the low of that change. It could be yesterday, it could be two weeks
ago.
--
Terry
-----Original Message-----
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On
Behalf Of Ernie Newman
Sent: Tuesday, August 15, 2006 16:17
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Peak and Tough Functions
I don't understand how the Peak and Trough functions work?
I would like to have a condition that if Peak 1 > Peak 2 then continue.
Peak 1 would be the most recent hhv as a peak and peak 2 would be the
peak before peak 1. To me a peak is defined as Ref(high,-2) < Ref(high,-
1) and Ref(high,-1) > high today.
The below says that Peak needs a % change and something about Zig Zag
function. I just want the latest peak to be greater than the peak
before it.
peak(ARRAY, change, n = 1)
RETURNS ARRAY
FUNCTION Gives the value of ARRAY n-th peak(s) ago. This uses the Zig
Zag function (see Zig Zag) to determine the peaks. n =1 would return
the value of the most recent peak. n =2 would return the value of the
2nd most recent peak. Caveat: this function is based on Zig-Zag
indicator and may look into the future.
EXAMPLE peak(close,5,1)
THANKS
Ernie
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