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Forum: Vizard

12-04-2007, 09:37 AM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

You only need to place your timer code inside the...

You only need to place your timer code inside the DoSample function. Everything else should be outside the function. So it should looke something like this:def DoSample():
global AMPLITUDE,...

Forum: Vizard

11-30-2007, 02:45 PM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

Did you place your code for collecting samples in...

Did you place your code for collecting samples in the DoSample function? That function will be called at the specified rate.

Forum: Vizard

11-29-2007, 03:05 PM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

I'm not sure, it might be a framerate issue. Did...

I'm not sure, it might be a framerate issue. Did the sample script I posted above give you better results?

Forum: Vizard

11-29-2007, 09:28 AM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

Also, your framerate should usually be 60. What...

Also, your framerate should usually be 60. What is your framerate when you run the following basic script?import viz
viz.go()

Forum: Vizard

11-29-2007, 09:25 AM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

I cannot run your code because it is not inside...

I cannot run your code because it is not inside the tags. Python code depends on indentation, and posting code without the proper tag loses the indentation.

Either way, I've included a sample...

Forum: Vizard

11-28-2007, 01:17 PM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

Press the F4 key while your script is running and...

Press the F4 key while your script is running and it will display the framerate in the upper left corner of the window.

I was referring to the results of your script that vary between 1700 to 1800...

Forum: Vizard

11-28-2007, 10:50 AM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

Computers are not %100 perfect when it comes to...

Computers are not %100 perfect when it comes to timing, however you should be able to achieve a reliable sample rate of 30Hz. I did some tests here and I got the same number of samples every time. I...

Forum: Vizard

11-27-2007, 04:42 PM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

I'm confused, I thought the whole point was that...

I'm confused, I thought the whole point was that you wanted to collect a preset amount of samples? If the duration of the trial is not known at runtime, then the number of samples to collect cannot...

Forum: Vizard

11-26-2007, 01:24 PM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

You can change the value of MAX_SAMPLES anytime...

You can change the value of MAX_SAMPLES anytime you want. If you want to set it in your callback then you can do the following:def onKeyDown(key):
global samples, MAX_SAMPLES
if key == ' ':...

Forum: Vizard

11-26-2007, 01:12 PM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

Set the MAX_SAMPLES variable to however many...

Set the MAX_SAMPLES variable to however many samples you need, it's up to you. If you want to collect for only 45 seconds then set it to the following:MAX_SAMPLES = 45 * 30

Forum: Vizard

11-26-2007, 01:02 PM

Replies: 24

Flock of Birds question (again)

Views: 28,055

Posted By farshizzo

If you need exactly 1800 samples, then setup a...

If you need exactly 1800 samples, then setup a counter that will stop the timer after the specified number of samples have been recorded. Here is some sample code that should show you how it...

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