Complex Mode menu item allows you to set what is
displayed. 
Select:
Jim> can display complex images - images where the real and imaginary parts are represented by separate 32-bit floating point values (interleaved).
When a complex image is loaded, the
Complex Mode menu item allows you to set what is
displayed. Select:
Real to display the real part of the complex
image.
Imaginary to display the imaginary part of the complex
image.
Magnitude to display the magnitude of the complex
image.
Phase to display the phase of the complex image.