# [Gmsh] post-processing

**Pei-Ying Hsieh**
peiying2003 at yahoo.com

*Thu Mar 29 13:29:39 CEST 2007*

Dear gmsh group:
Can someone tell me how to post-processing the following in gmsh?
(H * nabla) H
where H is magnetic flux field induced by a permanent magnet. This was calculated using GetDP.
Also, what is the format of .pos? for example,
View "h" {
VT(0.003,5.4210109e-017,0,0.0012962965,-0.00016029326,0,0.003,0.003,0){-534295.56,157091.87,0,-534295.56,157091.87,0,-534295.56,157091.87,0};
The first seems to be the coordinates of the 3 vertices of a triangluar element (this is a 2D case), what about the second, inside { }? I will assume these are the H values (a 2D vector) at the corresponding vertices, but, when I used the "probe" function in plugin, I got a very different value (in this case, I got some thing like 2.72e5 at the first vertex). So, I am confuse.
Thanks in advance for your reply!
Pei
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