[Gmsh] Question about gmsh

[Christophe Geuzaine]

> On 22 Oct 2016, at 04:09, Mayank Jog <mayankjog at gmail.com> wrote:
> 
> Hello,
> I have been using "simnibs" software which uses gmsh to calculate electric fields over a 3D mesh/geometry (human head). 
> It outputs a final .msh file, that contains the electric field information, and can be viewed using gmsh. 
> 
> My issue is, I want to convert this file to a list where each line = 
> [coord location, electric field value ] How do I go about doing it? 
> 
> The ultimate goal is to regrid this data onto a regular cartesian grid to do some funky postprocessing (fourier transforms, followed by funky stuff).

Here's an example:

Merge "tutorial/view3.pos";
Plugin(CutBox).X0=0;
Plugin(CutBox).Y0=0;
Plugin(CutBox).Z0=0;
Plugin(CutBox).X1=1;
Plugin(CutBox).Y1=0;
Plugin(CutBox).Z1=0;
Plugin(CutBox).X2=0;
Plugin(CutBox).Y2=1;
Plugin(CutBox).Z2=0;
Plugin(CutBox).X3=0;
Plugin(CutBox).Y3=0;
Plugin(CutBox).Z3=1;
Plugin(CutBox).NumPointsU=20;
Plugin(CutBox).NumPointsV=20;
Plugin(CutBox).NumPointsW=20;
Plugin(CutBox).ConnectPoints=0;
Plugin(CutBox).Boundary=0;
Plugin(CutBox).View=0;
Plugin(CutBox).Run;
Save View[1] "points.txt";




> I tried saving the .msh file as a .txt ** , and then reading it line by line.....I was thinking of replacing each triangular element with its centroid. However, I don't know how to proceed with other elements....please help me out
> 
> Thank you!
> Mayank
> 
> ** "Post processing Generic txt" option in "save as" in gmsh
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine

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