The Wolfram Language provides visualization functions for creating plots of complex-valued data and functions to provide insight about the behavior of the complex components. The plots make use of the full symbolic capabilities and automated aesthetics of the system.
ComplexListPlot — plot lists of complex numbers in the complex plane
ReImPlot — plot the real and imaginary parts of a complex function over the reals
AbsArgPlot — plot the absolute value and argument of a complex function over the reals
ComplexPlot — use color to plot the phase and magnitude of a function
ComplexPlot3D — use color and height to plot the phase and magnitude of a function