Tomasz,
I should
definitely have experimented more with the various functions before I posted
my question, but perhaps the user’s guide needs updating to point out the
(IMO) extremely useful dynamic nature of the functions that Corey has
highlighted?
Corey,
Thanks
very much indeed for that post. My life, and full transition to AB, has just
been made sooo much easier!...I should now be able to construct just about any
dynamic variable-period indicator from those basic functions. And I couldn’t
agree more about your comments on the significance of these
features…
With
reference to EMA coding, I guess you mean that:
EMA(array,period)
is equivalent to AMA(array, 2/(period+1))
???
Regards
Andy
From: amibroker@xxxxxxxxxxxxxxx
[mailto:amibroker@xxxxxxxxxxxxxxx] On
Behalf Of Corey Saxe
Sent: 30 March 2006 19:40
To: amibroker@xxxxxxxxxxxxxxx
Subject: Re: [amibroker] Adaptive
indicators / variable periods
A few years ago, Tomasz
added the ability for dynamic input in some but not all functions, such
as:
(If I missed any, please
let me know)
Some time ago, he also
showed how to do EMA through AB coding so it would change its lookback on the
fly,
so other changing some
other AB functions may be possible
also.
If I had to pick the one
most significant improvement that was added to AB over the years, for me, this
would be it.
Everything else I could
work around or used some other software for.
It easily doubled the
usefulness and scope of the formulas that I
use.
----- Original Message -----
Sent:
Wednesday, March 29, 2006 10:27 AM
Subject:
[amibroker] Adaptive indicators / variable
periods
I’ve looked but can’t
find anything to help me…hope someone here can shed some
light.
As far as I can see,
with the exception of AMA, the “standard” indicator functions, such as RSI,
will not accept variable periods…i.e. they can’t readily be made adaptive by
using an array as an input. I want to use a modified version of Ehler’s
Dominant Cycle Period (which I already have) as the period input to RSI and
stochastic momentum (the bit I’m stuck on).
Before I go off and
try and build these up from ground level I was wondering if anyone has any
advice or could turn me round and point me in the right
direction.
Andy