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how to capture the electric field of a point in 3D model

Posted Aug 23, 2011, 8:02 p.m. EDT Low-Frequency Electromagnetics Version 3.5a 0 Replies

Rui Huang
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Hi guys,

I'm trying to capture the electric field of a point in my 3D model of the cable by comsol 3.5a with matlab.

In 2D model, I can just click the point on the model and get the result at the bottom of the screen of just put the code

E = postinterp(fem,'Ez_emqvw',[0;0],'phase',0,'solnum','end'); in matlab.

While in 3D model, I cannot just click the point on the model and I try the code
E = postinterp(xfem,'tEz_emqvw',[0;0;0],'phase',0,'solnum','end'); in matlab
just change the coordinates from 2D to 3D

the result from matlab shows that : E is NAN(not a number)

what I want to know is how to use matlab to capture the electric field of a point in 3D model

thanks so much
0 Replies Last Post Aug 23, 2011, 8:02 p.m. EDT
COMSOL Moderator

Hello Rui Huang

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