soapSnake - understanding complex functions

version (863 KB) by Job
Didactic tool to understand complex functions over the real domain.


Updated 29 May 2016

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Six features, in one intuitive display!
1) The 3D snake shows the complex behavior of f(x) over x.
2) The floor projection shows the real behavior.
3) The right projection shows the imaginary behavior.
4) The backprojection shows the complex plane.
5) The magnitude of f(x) is visualized in the thickness of the snake.
6) Finally, the rainbow colors of the added soap skin reflect the phase of f(x).
The function plots any complex function you like:
f(x) = exp(ix);
f(x) = x.^x;
f(x) = log(x);
f(x) = sin(i*x);
A couple of examples are added in the demo file.
NB: It is also possible to show the complex spectrum of (simple) time signals, however, sometimes the settings in the function must be chosen carefully!

Cite As

Job (2022). soapSnake - understanding complex functions (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2015b
Compatible with any release
Platform Compatibility
Windows macOS Linux

Inspired by: TubePlot

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