[Gmsh] Extract plugin

[Christophe Geuzaine]

On 16 Aug 2012, at 11:12, Andres Gonzalez Estrada <agestrada at gmail.com> wrote:

> Hi, 
> 
> I'm trying to use an old script from a friend that uses the Extract plugin but I get an error indicating that the plugin is not available. I've checked gmsh interface and I only see ExtractEdges and ExtractElements plugins. The online manual says in: 
> http://geuz.org/gmsh/doc/texinfo/gmsh.html#Post_002dprocessing-module 
> 
> "(Tensor fields are currently displayed as Von-Mises effective stresses. To display other (combinations of) components, use Plugin(Extract): see Post-processing plugins.)"
> 
> However, Extract is no longer in the list referred by the link in the same page:
> http://geuz.org/gmsh/doc/texinfo/gmsh.html#Post_002dprocessing-plugins
> 
> This is ackward. I'm using gmsh v2.5.0 in Natty distribution. I can use MathEval to get the information but I would like to know what happened with the Extract plugin to avoid changing all the scripts.
> 

Hi Andres,

Indeed, "Extract" has been renamed "MathEval" (we forgot to update the docs; this is now fixed in SVN). With recent versions you can also display tensors directly as min/max eigenvalues, eigenvectors, ellipses or ellipsoids.

Cheers,

Christophe

> 
> Thanks,
> 
> -- 
> --
> Octavio Andrés González Estrada
> 
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine