Hello everyone

I just bought the ADSI package and I am working on "mastering" it the fastest I can. I've built 2 reference value tables, one for Alphas and the second for the DeltaPhaseLows and DeltaPhaseHighs, in order to have the parameter values handy when adjusting Ehlers indicators that require them.

However, using real currencies/equities doesn't give me a clear understanding about the output response when changing the indicator param values.
I've tried to use a fixed frequency [with Sin(Cum(1)*360/K)] where K is the number of bars/cycle I want to test the indicators input.

I've tested various param values with the SineWave that acts like any other filter with poles and zeroes, which is perfectly normal.
However, the SineWave output varies pretty much for a given frequency when changing the parameters, which is a normal behavior too.

What I am looking for is a stimulus set of files that will have the data values properly generated to test and understand better the adaptive indicators that are part of the ADSI package.

I assume Brad might have already this kind of stimulus file set (in a CSV/XLS format) because he had to test all the functions with clean mathematical stimulus (like Sin, saw shape etc.)

An example of stimulus files I am looking for are described below:

1) "Chirped" Sine Wave:
This would be a Sine wave that varies its cycle from 2->240 bars but can have from 1->12 complete cycles (here can be 12 files) at the same frequency before it will change upward.

2) "Heterodyned" Sine Waves input
This would be a low frequency Sine wave (i.e. 80-240 bars) as the dominant cycle multiplied by another Sine Wave with a a smaller amplitude (38-62%) and a higher frequency (8-40 bars).

3) Triangular-Sine complex signal
This one would have a linear variation of the price as the dominant cycle (a triangular saw shape input = 80-240 bars) multiplied by a Sine Wave with a smaller amplitude (38-62%) and a higher frequency (8-40 bars).

The reason for this stimulus is to test and understand how the parameters listed above(Alphas, Deltas) affect the indicators output:
- response time
- output wave distortions vs the input wave
- the LAG variations with frequency
- output frequency "cutoff" or attenuation as function of input frequency
- the indicators ability to extract the cycle component from the complex input signal

Eventually, will be possible to extract optimized values or simplified formulas to calculate the Alphas and Deltas as a function of the Cyber Cycle i.e.

My expertise being in the electronic hardware design, I don't have a programmer proficiency and speed to generate these stimulus files.
The code development and debugging will be quite time taxing for me. I would be eventually able to create these files using VHDL language, but any help will be appreciated, especially if somebody has similar file types ready for use.

In order for the MetaStock Downloader to be able to convert the CSV/XLS files to MS data type it will be necessary that the CSV files will have the proper header and data format:
- Header Order = Date,Time,Open,High,Low,Close,Volume (the Volume field is filled with zeroes)

Date format = 1/1/2005
Time Format = 13:15:00 (24 hours format with seconds field all zeroes)
Open,High,Low,Close = any value, preferably above or equal to unity.

The Time and Date will be computed as a function of the stimulus data length. I believe any fixed value for an IntraDay time frame will do (for the Date, Time computation)

I will appreciate any comment and replies.

Guara

the sinewave above has an amplitude of 1.

To adjust the amplitude, a, try this:

[code:1:07867d80b5]x := 20;
a := 2;
y := a*Sin(Cum(1)*x);[/code:1:07867d80b5]


And try this for a heterodyned signal:

[code:1:07867d80b5]x1 := 20;
x2 := 12;
inpt := Sin(Cum(1)*x1);
inpt2 := Sin(Cum(1)*x2);

heterodyned := inpt+inpt2;
heterodyned;[/code:1:07867d80b5]


To get a delayed signal, you can use the Ref() function

[code:1:07867d80b5]refh := Ref(signal, -5);
refh;[/code:1:07867d80b5]


- Brad

Brad/Jose

Thank you for your replies.

In fact I've got further with this issue: I've generated myself 3 diferent kinds of stimulus by using the "Free Pascal" compiler.
Here are 3 files that implement 1,4 and 8 full cycles for the same frequency for each type of stimulus.
Stimulus1
This is a simple chirped sine wave as described in Dr. Ehlers books.
Stimulus2
This is a weighted 2 sine waves sum. Is a more comples stimulus and unveils some disturbing facts about how the PP+ external function behave.
Stimulus3
This is a weighted sum of 3 sine waves that approaches substantially to the real price variations. It completes very nicely the results with PP+ mentioned above.

I am attaching the zipped CSV files.
For those that are new to the use of the format translation using the Downloader:
- open each file with Excel and save it in the Excel format (XLS)
- create a new equity in the Downloader with the same name (recommended)
- convert the XLS file to MetaStock format in the folder of your choice (Should allow "Tranverse Directories" for sources and destinations and should check the "Create New File" check box. The period is 1 min, but it doesn't mater really)

Brad, I believe these files could have a good use for any of your testings, in the case you don't have already something similar.

I will attach a document that is embedding multiple samples of these stimulus files with PP+ indicators by replying to an older post of mine, relaterd to PP+.
(Late Entry = Seems the server doesn't allow me to upload a +5MB file, limiting me to 2MB, even if the stated allowed file size is 8MB.
I'll try to get some help from the "webmaster". Meantime I will attach the document i've wrote about the failures of some PP+ external functions)

If anybody is interested about the code, just ask for it. I will be attraching it to a reply, if required.
Just for those interested: i am not a professional programmer.
I have used Turbo Pascal and similar compiler during my designer years to build up stimulus files for the hardware I was building.
So don't expect the code to be very efficient or to look very professional. It is simple and can be ported easily to other languages.

Guara

I also see where you answered the sinewave period question the first time. Sorry i missed that.

Thanks,

Brad