How can I plot both real part and imaginary part with contour plot

From topic, how can I plot both of this? (2D plot)

thank you for your answer.

in command windows

Error using contourf (line 55) Input arguments for contour must be real. Use the function REAL to get the real part of the inputs.

[Balaji Ramdas]

I have the same error, let me know if u get the answer

Answer 1

[Walter Roberson]

Method 1:

subplot(2,1,1)
contour(X, Y, real(Z), REAL_LEVELS)
title('real')
subplot(2,1,2)
contour(X, Y, imag(Z), IMAGINARY_LEVELS)
title('imaginary')

Method 2:

contour(X, Y, abs(Z), ABS_LEVELS)

Method 3:

contour(X, Y, real(Z), REAL_LEVELS)
hold on
contour(X, Y, imag(Z), IMAGINARY_LEVELS)

All three methods have drawbacks.

Sometimes what you need is more like

quiver(X, Y, real(Z), imag(Z))