Graphics |
Plotting Imaginary and Complex Data
When the arguments to plot
are complex (i.e., the imaginary part is nonzero), MATLAB ignores the imaginary part except when plot
is given a single complex data argument. For this special case, the command is a shortcut for a plot of the real part versus the imaginary part. Therefore,
where Z
is a complex vector or matrix, is equivalent to
For example, this statement plots the distribution of the eigenvalues of a random matrix using circular markers to indicate the data points.
To plot more than one complex matrix, there is no shortcut; the real and imaginary parts must be taken explicitly.
Line Plots of Matrix Data | Plotting with Two Y-Axes |
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