----- Original Message -----
Sent: Tuesday, February 28, 2006 11:58
PM
Subject: Re: [amibroker] Re: ADX,MDI,PDI
internal codes
Hi Ron,
ADX, MDI and PDI are actually fairly lengthy series of calculations
as they use the stock's True Range, summing and some other voo doo a'la
Wilder. To copy it all out is too much for me to undertake
this evening as I have come to trust that AB's formula are a valid. I
use ADX and ATR frequently to find tradable stocks.
Most sites like TA from A to Z don't bother to give you the secret
recipe, because it is beyond the capabilities of most charting software to do
on the fly -- that's why it's usually built it, but it is available. If
you wish to see the true calculations check out J. Wells Wilder's seminal
work New Concepts In Technical Trading Systems (pp 35-52) for how he
calculated it. BTW, if you are serious about wanting to write your
own stuff and not rely on canned indicators, this expensive
little book should be on your desk shelf -- Wilder developed not
only ADX, but RSI, Parabolic SAR, CCI, and a number of other concepts and
trading systems.
I believe I still have an Excel worksheet on one of my computers
which will do the calculations For ADX, +DM, -DM and all the required
intermediate steps, however you would have to enter the H, L, AND
C manually. I may also have an ADX Excel worksheet which
includes a macro which will get the requisite data from a QP database.
If you are really interested, send me your email address and I'll dig it up
and send you a copy -- you can then look at the formulas in each cell to
see how these are derived if you wish to develop your own indicator.
FWIW, AB's ADX is consistent with Wilder's formula and my
spreadsheet.
Peace and Justice --- Patrick
----- Original Message -----
Sent: Tuesday, February 28, 2006 6:30
PM
Subject: Re: [amibroker] Re:
ADX,MDI,PDI internal codes
Fred, the Amibroker version may be no better than any
other version out
there, however, I would still like to have the
equation that TJ uses in the
AMIBROKER version of ADX.
I was
hoping that someone would have it readily available, I will ask
support about it if I don't see it show up on this board. Thanks
for your
suggestion. Ron D
----- Original Message
-----
From: "Fred" <ftonetti@xxxxxxxxxxxxx>
To:
<amibroker@xxxxxxxxxxxxxxx>
Sent: Tuesday, February 28, 2006 12:50
PM
Subject: [amibroker] Re: ADX,MDI,PDI internal codes
>
Have you tried writting your own from commonly available sources and
>
comparing the results graphically or in an Explore ?
>
> --- In
amibroker@xxxxxxxxxxxxxxx, "mrdavis9" <mrdavis9@xxx>
wrote:
>>
>> If it is not proprietary code, I would like
to know the exact
> equations that are used by Amibroker in the
ADX, MDI and PDI
> functions. Hopefully it is readily
available. Ron
D.
>>
>
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