[MOAB-dev] h5m format

[Grindeanu, Iulian R.]

you can visualize dense tag data, if you save in h5m or vtk format
tag data can be on vertices or on elements
you can use VisIt or Paraview for that
the mesh and the tag data (fields) have to be in the same file

________________________________
From: moab-dev-bounces at mcs.anl.gov [moab-dev-bounces at mcs.anl.gov] on behalf of John Loverich [john.loverich at gmail.com]
Sent: Tuesday, June 02, 2015 11:56 AM
To: Vijay S. Mahadevan
Cc: moab-dev at mcs.anl.gov
Subject: Re: [MOAB-dev] h5m format

Does Moab have the machinery to write both mesh and simulation data?  Obviously I can write the mesh, but I'm wondering if I need to create my own writers for simulation data or do they already exist in moab?  Simulation data is just referring to fluid densities on the grid, etc...

Thanks,

John

On Wed, May 20, 2015 at 1:52 PM, Vijay S. Mahadevan <vijay.m at gmail.com<mailto:vijay.m at gmail.com>> wrote:

You can directly output to vtk in serial or use mbconvert tool under bin directory in your installation to convert the format.

mbconvert test.h5m test.vtk

That should work for any files. If there are issues let us know. You can also look at all supported formats by running

mbconvert -l

Vijay

On May 20, 2015 8:27 PM, "John Loverich" <john.loverich at gmail.com<mailto:john.loverich at gmail.com>> wrote:
Thanks Vijay, also is there a moab format for simulation results?  There is a moab mesh and it's natural to write out data (density for example) corresponding to grid elements (vertices or cell centers for example).  If there is a standard way of doing this, then one can get the commercial visualization tools (like tecplot) to support it.

John

On Tue, May 19, 2015 at 9:24 AM, Vijay S. Mahadevan <vijay.m at gmail.com<mailto:vijay.m at gmail.com>> wrote:
> Hi all, sorry for sending to this address, but couldn't find the proper
> place to send questions.

John, no need to apologize. This is the right place to send these questions.

> Is there any visualization tool that supports the native Moab mesh format
> (h5m)?

Both Paraview and Visit need to be built from source to visualize the
native h5m MOAB format. There are some instructions in [1] but I'm
unsure if this is outdated since we've not built the plugin on recent
version I think.

Paraview is a bit easier i.e., compile Paraview from source, configure
MOAB using --with-vtk option and install it to a prefix, go to
tools/vtkMOABReader and use the CMake configuration to specify both
PARAVIEW_DIR and MOAB_DIR to compile the plugin. You can then load the
plugin from Paraview and utilize it to natively visualize h5m files.

We are planning to also make this workflow easier in the coming
months. Rajeev, does CMB take care of this right now as it stands ?

Vijay

[1] http://sigma.mcs.anl.gov/moab/visualization-with-moab/

On Tue, May 19, 2015 at 10:09 AM, John Loverich <john.loverich at gmail.com<mailto:john.loverich at gmail.com>> wrote:
> Hi all, sorry for sending to this address, but couldn't find the proper
> place to send questions.
>
> Is there any visualization tool that supports the native Moab mesh format
> (h5m)?  It seems neither Paraview nor VisIt can read this format, though I
> may be mistaken.  On top of that, I'm interested in a standard way to store
> field data for a given Moab mesh.  Though Moab simply defines the mesh,
> suppose I have electric field values stored in a different file linking to
> the mesh file.  Obviously I can use vtk or some other format, but would
> rather use the Moab HDF5 format directly if possible.
>
> Thanks,
>
> John


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