Vector quantities
Introduction
The quantities available for postprocessing can be scalar or vector quantities.
This section deals with vector quantities and recalls some definitions: complex notation, elliptical representation…
Vector quantities (complex notation as rotating vectors)
Each component of a vector quantity can be written as a sinusoidal quantity:
; …
or, in complex notation:
; …
; …
where:
 is the modulus of the complex component
 is the argument (or the phase) of the complex component
 is the real part of the complex component
 is the imaginary part of the complex component
Elliptical representation in 2D
In general case, the vector quantities are varying in function of time on ellipses.
For each point, the magnetic flux density can be written:
These are the parametric equations of an ellipse.
The two components of the magnetic flux density can be expressed depending on the ellipse characteristics, as follows:
 , where

where
a is called “½ major axis” and b is called “½ minor axis”