- #1

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## Main Question or Discussion Point

I have been playing with the FFT and graphs. The easiest example I could think of for a transform was the top hat function (ie 0,0,0,0,0...1,1,1...0,0,0,0,0). When I transform this from the time domain to the frequency domain, it returns a sinc function when I take the absolute value squared of the returned complex values. This is all well and good (mostly beyond my understanding, but fun to play with).

Now my question comes in when I plot the returned values in the complex plane (real on x axis and imaginary on y axis). This specific plot makes a quite pretty flower, but I have now idea what it means, and Google is no help. As I play with the variables and function to transform, I can skew, rotationally, the graph.

To the jist of the question, what, if anything does this plot represent? How do I interpret it?

Regards,

Dave

Now my question comes in when I plot the returned values in the complex plane (real on x axis and imaginary on y axis). This specific plot makes a quite pretty flower, but I have now idea what it means, and Google is no help. As I play with the variables and function to transform, I can skew, rotationally, the graph.

To the jist of the question, what, if anything does this plot represent? How do I interpret it?

Regards,

Dave