Hi Amit,

Great! If you're data is stored as binary single precision float with one array per scalar/component, I'd recommend the BOV reader in the SciberQuest ToolKit plugin. It provides both a parallel read and writer for PV and supports scalars, vectors, symetric tensors and tensors. The ascii headers are very easy to write. http://www.hpcvis.com/vis/sq-bov-reader.html btw Some time ago I shared a parallel FORTRAN writer for this format with Mahidhar. It was quite while ago, but I may have a copy around if he doesn't.

If you have some other data organization then XDMF may work.

Burlen

On 12/13/2013 12:21 PM, Chourasia, Amit wrote:
Burlen,

Yes the mesh is uniformly spaced.
Instead of going in round about way of using BOV format and bunch of other 
transforms in paraview.

What is the recommended way to doing things the paraview way for unigrid data
1) Is there a way to write a simple header like BOV for an existing dump of 
uniform 3d binary data?
2) Other format you recommend we can dump directly from the code, excluding 
ASCII VTK


Thanks
--Amit
PS: Thanks your mail got buried in my mail-list folder, so did not see this 
earlier.


On Dec 6, 2013, at 12:06 PM, Burlen Loring wrote:

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, [email protected] wrote:
Send ParaView mailing list submissions to



----------------------------------------------------------------------

Message: 1
Date: Fri, 6 Dec 2013 02:22:55 +0000
From: "Chourasia, Amit" <[email protected]>
Subject: [Paraview] Unable to do Volume rendering on BOV file
To: "[email protected]" <[email protected]>
Message-ID: <[email protected]>
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 <[email protected]>
Subject: Re: [Paraview] Unable to do Volume rendering on BOV file
To: "Chourasia, Amit" <[email protected]>
Cc: "[email protected]" <[email protected]>
Message-ID:
        <cadhsjjdfw48kssxox+_fpjrgnwwqjeg4pizsg0qwc41pg3z...@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 <[email protected]> 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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