Plot E/H/Currents from CST in matlab

Hi,

I have export the currents density in specially surface from cst mws to a txt file. The exported file contains Re(Jx), Re(Jy), Re(Jz), Im(Jx), Im(Jy) and Im(Jz). How can i plot the instantaneous distribution of inplane component of J by matlab or Golden Surfer?

I have tried to plot the (Re(Jx), Re(Jy)) and (abs(Jx), abs(Jy)), both results is wrong. I dont know how to plot the phase in each point.

Thanks in advance

Zhang