[Paraview] Unable to do Volume rendering on BOV file

[Burlen Loring]

Hi Amit,

Is your mesh uniformly spaced?

If I'm not mistaken, PV does not currently support native volume 
rendering of stretched Cartesian meshes (ie vtkRectilinearGrid). However 
it does support volume rendering on uniform Carteisan meshes and other 
data types. There are quick and dirty ways to convert the stretched 
Cartesian meshes to a data type for which volume rendering is supported 
in the GUI. Obviously not ideal, but would let you render something quickly.

The default BOV reader in PV is the VisIt BOV reader which always 
generates a stretched Cartesian meshes even when the data is uniformly 
spaced. This is a VisIt issue. If you have uniform spacing then you 
should use a different reader. On the other hand if you really do have a 
stretched Cartesian grid then the quickest path to a volume rendering is 
to convert to an unstructured grid. You can do this in the GUI after you 
open the data apply a threshold filter (set the threshold so that all 
data is passed, the defaults should do it).

Burlen

On 12/06/2013 08:14 AM, Benson Muite wrote:
> Hi Amit,
>
> XDMF data format is a little better than BOV in ParaView for rectilinear
> data. VisIt will also read XDMF.
>
> An example code can be found here:
> https://raw.github.com/openmichigan/PSNM/master/KleinGordon/Programs/KleinGordon3dMpiFFT/xdmfcreate.f90
>
> The corresponding example program to create BOV header files is here:
> https://raw.github.com/openmichigan/PSNM/master/KleinGordon/Programs/KleinGordon3dMpiFFT/bovcreate.f90
>
> These programs take as input the number of grid points in each dimension
> Regards,
> Benson
>
> On 06/12/2013 17:34, paraview-request at paraview.org wrote:
>> Send ParaView mailing list submissions to
>>
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Fri, 6 Dec 2013 02:22:55 +0000
>> From: "Chourasia, Amit" <amit at sdsc.edu>
>> Subject: [Paraview] Unable to do Volume rendering on BOV file
>> To: "paraview at paraview.org" <paraview at paraview.org>
>> Message-ID: <8DD76694-38D8-4463-B716-BD3ADE5D36D8 at sdsc.edu>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> Hello,
>>
>> I am loading a BOV file into Paraview, however I do not get an option for volume representation.
>> Do I need to add something else to the bov header file other than standard BOV specifications?
>>
>> Alternatively is there a better way to load a rectilinear uniform grid data into paraview other than using BOV header files.
>>
>> Help appreciated.
>>
>> Cheers
>> --Amit
>>
>>
>>
>>
>>
>>
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Thu, 5 Dec 2013 19:47:29 -0700
>> From: Utkarsh Ayachit <utkarsh.ayachit at kitware.com>
>> Subject: Re: [Paraview] Unable to do Volume rendering on BOV file
>> To: "Chourasia, Amit" <amit at sdsc.edu>
>> Cc: "paraview at paraview.org" <paraview at paraview.org>
>> Message-ID:
>> 	<CADHSJjDFw48kSsXOX+_FpjRGNWwQjEG4pizsG0QWC41Pg3Z6Kw at mail.gmail.com>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> Amit,
>>
>> Do you have sample dataset to share? Feel free to share it of the list if
>> needed.
>>
>> Utkarsh
>>
>>
>> On Thu, Dec 5, 2013 at 7:22 PM, Chourasia, Amit <amit at sdsc.edu> wrote:
>>
>>> Hello,
>>>
>>> I am loading a BOV file into Paraview, however I do not get an option for
>>> volume representation.
>>> Do I need to add something else to the bov header file other than standard
>>> BOV specifications?
>>>
>>> Alternatively is there a better way to load a rectilinear uniform grid
>>> data into paraview other than using BOV header files.
>>>
>>> Help appreciated.
>>>
>>> Cheers
>>> --Amit
>>>
>>>
>>>
>>>
>>>
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