[Gmsh] Attractor point

[luos at msu.edu]

Thank you for the help.   The output .msh  does not contain these attractor points anymore, but the problem is the output .msh file only contains  Nodes and Tetrahedrons,    Points and Lines and Triangles on the boundary are not saved.   

I tried -saveall option, then everything is saved including the atrractor points.   Please let me know how to save the output .msh file including all elements but the arractor points.

Thanks,
ST

Quoting Geordie McBain <gdmcbain at freeshell.org>:

> 2011/6/23  <luos at msu.edu>:
>> Dear All,
>>
>> I generated a 3D mesh with tetrahedrons.    A threshold filed with an
>> attractor filed is used to get locally refined mesh.   The attractor field
>> contians several points.  The resulting mesh looks good.
>>
>> The problem is that these attractor points do not belong to any
>> tetrahedron.
>> In the saved .msh  file,  they are node points but none of them  are
>> vertecies of any tetrahedron.
>>
>> I want node list  to be vertecies of tetrahedrons.
>>
>> Could anyone please tell me what the problem is?  And how to fix these
>> problems.
>
> Hello.  I think you might be able to fix this - that is, suppress the
> output of the nodes that aren't associated with elements - by
> declaring the volume occupied by the tetrahedra as a Physical Volume.
>
> http://geuz.org/gmsh/doc/texinfo/gmsh.html#Elementary-vs-physical-entities
>
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