Comments on: Average Directional Movement Index ADX Formula in C#

By: ben

ben — Tue, 02 Aug 2011 22:24:35 +0000

what values do you take for t-1 when considering calculations for the first day? Do caclulations really only start on Day 2 since that is only when one has previouos days’ data to use in calc?

By: Viny

Viny — Sat, 25 Jun 2011 23:03:35 +0000

Can you send me all source code of you class please. It’ll be very helpful.
Thanks.

By: Jake

Jake — Sat, 08 Jan 2011 05:18:21 +0000

Hello everyone… how exactly should i get the Previous parameters (t-1)? e.g. when the formula says: PlusADM(t) = PlusADM(t-1)*(1-n/n)+(PlusDM(t))*(1/n) ; when the PlusADM(t-1) should come from? if i starts by the order from the begining, and i have only current and historical data for open, close, high, and low parameters so when High(t) means the high for November 5 then high(t-1) means high of november 4, it’s makes sense for PlusDM and MinusDM since they depend only on the parameters of open and close data and we can get them, but the PlusADM(t=Nov5 for example) defined with the previous PlusADM in it [PlusADM(Nov4)] so where it’s should starts from (and if you can get the historical PlusADM (for Nov4) then what’s the point in all that formula?), i don’t have the Nov4 PlusADM so assuming i start the application on Nov5 the current PlusADM cannot be defined right? what i miss here?

thanx alot.

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By: Arsalan

Arsalan — Wed, 24 Feb 2010 14:46:12 +0000

Great Work, I implemented the same but in a much more gruesome brute force kinda manner. Knowing the formula helps and simplifies it a lot.
Do you have the src for this available? if not then its fine.
Thanks anyways

By: S

Wed, 20 Jan 2010 14:23:46 +0000

Thanks for a detailed explanation on ADX, it was quite informative. Thanks again for the good work

By: quinton

quinton — Tue, 08 Dec 2009 11:08:02 +0000

Thanks a bunch! This formula was just what I needed for my school report.

ciao,

By: Richard

Richard — Mon, 31 Aug 2009 15:10:54 +0000

@cdm: yes, the length ‘n’ wilder average is just a length ’2n-1′ EMA.

By: cdm

cdm — Mon, 22 Jun 2009 09:08:34 +0000

Hi,
ultimately which indicator do you recomend between the exponential MA and the Welles Wilder Avergae ? It seems to me that the 14 days Wilder average is like a 27 exponential moving average … but i’d like to get a confirmation on what to use …
TKs a lot for all the formula though !

By: Menno H.

Menno H. — Thu, 23 Apr 2009 19:26:14 +0000

hmm my reply is all f*cked up =( guess i cant post that many chars, nvermind than xD. srry!

By: Menno H.

Menno H. — Thu, 23 Apr 2009 19:24:56 +0000

I did it this way (for DMI and -DMI only). I didn’t really get ur method (iam not that good at math lol)

Used a array for the Low,High,Close data’s named Quotes. Any feedback is welcome =)

private void CalcDMI()
{
decimal TR = 0;
decimal DMP = 0;
decimal DMM = 0;

for (int x = 0; x 0 && HD > LD) ? HD : 0;
DMM = (LD > 0 && LD > HD) ? LD : 0;
}

PDI = (DMP * 100) / TR;
MDI = (DMM * 100) / TR;
}

By: Jim N.

Jim N. — Wed, 11 Feb 2009 03:40:42 +0000

Great work – I’ve been struggling to build this myself due to the complexity of the indicator. This helped me a lot and is the best explanation I’ve seen on the web. Thanks!

By: Vidar

Vidar — Mon, 05 Jan 2009 19:16:56 +0000

The ADX formula is wrong. Replace the TR with DX and it works fine for me. Besides that, GREAT work

By: John B

John B — Fri, 07 Nov 2008 03:54:54 +0000

I have not been able to get this formulas equal to the Marketscope ADX values. For some reason the first adx calculated is equal, but from the 2nd Adx it is not getting equal. Did you check the values that your formulas calculate against any other tool? It seems that it’s something about the Average Directional Movement Indicator, because the ATR i’m getting through your formulas is accurate against de Marketscope ATR.

Anyway your post has been so helpfull, but I want to get values that match exactly compared to the marketscope tool so I can verify more clearly my strategy.

By: srb

srb — Mon, 07 Jul 2008 12:47:05 +0000

Ah, I see now that you are comparing it w/ the NYSE A/D 1-min bar data.

By: srb

srb — Mon, 07 Jul 2008 12:23:18 +0000

At 14:24, the ADX takes off and climbs to .35 while the price barely moves. Shouldn’t the ADX be falling during this period?

By: Nabusman

Nabusman — Fri, 02 May 2008 10:53:55 +0000

Wow, this is awesome, exactly what I was looking for. Thank you.

By: Magdiel Herrera Franqui

Magdiel Herrera Franqui — Mon, 07 Jan 2008 23:12:51 +0000

Hola, muy buena argumentacion respaldada por su respectiva implementacion en C#, solo me queda una duda,

puede que en esta parte:

Average Directional Movement Index

 is the average directional movement calculated over N periods.

Staying true to form again, the Welles Wilder Average is used below.

se te halla pasado y colocaste el calculo del indicador True Range en Lugar de DX ?

Saludos.