Re: [Libmesh-users] Data export to Octave/Matlab readable format

[Derek G. <fri...@gm...>]

Two free ones that are pretty good are:

Paraview ( http://www.paraview.org ) from Sandia and Visit ( https://wci.llnl.gov/codes/visit/ 
  ) from Livermore.  Both of these read a variety of files... but  
probably the best option is to use Exodus format from Sandia (which  
libMesh reads and writes well... and is continuously improving).  One  
advantage of Exodus is that as long as your mesh doesn't change....  
you can write multiple timesteps to the _same_ file.... which is  
handy.  And yes, there is support for that feature in libMesh.

Visit is something I haven't actually used myself, but I do use  
Paraview on a daily basis.  Lots of others around here (at Idaho  
National Lab) do use Visit though.

Finally, if you are looking to purchase some visualization package, in  
my experience the two best are: Ensight ( http://www.ensight.com/ )  
and Tecplot ( http://www.tecplot.com/ ).  The problem with Tecplot is  
that it is really missing quite a few features for anyone doing  
something other than CFD.  Ensight is expensive.... but is LOADED with  
features.  We use it here to visualize 50 million DOF solutions....  
where our local supercomputer is running Ensight to do all the data  
manipulation and then 4 computers (with high end video-cards) running  
Ensight work together to render the images on a high resolution "Power  
Wall".  No other vis software even comes close when it comes to large  
scale visualization.

Hope that helps,

Derek


On Aug 13, 2008, at 11:35 AM, Nasser Mohieddin Abukhdeir wrote:

> Hi John:
>    I have been using GMV for 2/3D and it works quite well, I'll look
> into using it to extract data for post-processing, adaptive meshing
> makes this a little more complicated than my original uniform mesh
> solutions.
>    Just to share some of my experiences, I have not found anything as
> good as GMV for 2/3D visualization, the closest I could find was GMSH
> but I found it extremely difficult to use, even for basic  
> visualization
> tasks, and it crashed a lot.  There is another piece of software  
> called
> Salome, but development seemed to have stopped on it last year so I
> cannot test it out.
>
> Nasser Mohieddin Abukhdeir
> Graduate Student (Materials Modeling Research Group)
> McGill University - Department of Chemical Engineering
> http://webpages.mcgill.ca/students/nabukh/web/
> http://mmrg.chemeng.mcgill.ca/
>
>
>
> John Peterson wrote:
>> On Tue, Aug 12, 2008 at 4:59 PM, Nasser Mohieddin Abukhdeir
>> <nas...@mc...> wrote:
>>
>>> That works for 1D, for 2D with adaptive meshing should I just  
>>> project the
>>> solution to a uniform grid and export?
>>>
>>
>> For 2D there are several output formats, unfortunately GNUplot is not
>> one of them.  May I recommend the General Mesh Viewer
>> (www-xdiv.lanl.gov/XCM/gmv/GMVHome.html)?
>>
>>
>>
>
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