How to calculate the norm of E-field (T-domain and f-domain)

A (simple ?) question
An Em simulation tool allows me to get the 6 Re and Im part of the near-field E components (Ex Ey and Ez) in the t-domain.
I need help about how to calculate the norm of this vector.

This Em tools gives me the f-domain e-field which is also made of 6 components.
Is it possible for E-field in the frequency domain to be a complex vector ?
If yes, how to calculate its norm ?

norm = [ (ReEx^2+ImEx^2)+(ReEy^2+ImEy^2)+(ReEz^2+ImEz^2) ]^0.5

Thanks.

Hi

Yes, Ex Ey Ez in freq. domain are complex

Your time domain norm will be Ex^2+Ey^2+Ez^2

Regards