[Paraview] [EXTERNAL] Re: pvtm file format

Scott, W Alan wascott at sandia.gov
Tue May 15 22:57:58 EDT 2018 

OK, although dense and slow, I finally got it.  Thanks, good explanation to both of you.  I will close the bug I wrote.

Thanks guys,

Alan

From: Shawn Waldon <shawn.waldon at kitware.com>
Date: Tuesday, May 15, 2018 at 3:09 PM
To: Andy Bauer <andy.bauer at kitware.com>
Cc: W Scott <wascott at sandia.gov>, "paraview at paraview.org" <paraview at paraview.org>
Subject: Re: [Paraview] [EXTERNAL] Re: pvtm file format

An example: If I make a PNG writer in the code and set the filename it is supposed to write to "foo.pgn" it will write a file named "foo.pgn" because that is what it was programmed to do.  The data in the file will still be in the PNG format, the filename will just have the wrong extension.  It is still a PNG file and if I rename it to foo.png, most programs will read it correctly.  But while the extension is misspelled very few programs (if any) will read it.
HTH,
Shawn

On Tue, May 15, 2018 at 4:53 PM, Andy Bauer <andy.bauer at kitware.com<mailto:andy.bauer at kitware.com>> wrote:
If the user did that, then he/she explicitly set the file extension to be .pvtm instead of the default .vtm when creating the Catalyst multiblock dataset writer for the Catalyst script. There is only one XML multiblock data reader and writer.

When a user adds a writer when making a Catalyst Python script by default it will have the proper file extension but they are allowed to change that file extension. The file extension that the user gives the filename doesn't affect the file format itself (i.e. what writer is used).
Does that make sense?

On Tue, May 15, 2018 at 4:12 PM Scott, W Alan <wascott at sandia.gov<mailto:wascott at sandia.gov>> wrote:
Again, does this then mean we should delete pvtm file formats Catalyst writers?  I have a user that created a pvtm file recently, I believe using Catalyst…

From: Andy Bauer <andy.bauer at kitware.com<mailto:andy.bauer at kitware.com>>
Date: Tuesday, May 15, 2018 at 1:00 PM
To: W Scott <wascott at sandia.gov<mailto:wascott at sandia.gov>>
Cc: Utkarsh Ayachit <utkarsh.ayachit at kitware.com<mailto:utkarsh.ayachit at kitware.com>>, "paraview at paraview.org<mailto:paraview at paraview.org>" <paraview at paraview.org<mailto:paraview at paraview.org>>
Subject: Re: [Paraview] [EXTERNAL] Re: pvtm file format


From my investigation and not being able to find any pvtm in either today's ParaView or several of the 3.* versions (what Ken's old bug report referred to) I'd say that .pvtm was never officially or even unofficially a VTK file format extension used by the XML multiblock reader or writer. I'd say that .vtm is the one and only XML multiblock data extension and close the issue.

On Tue, May 15, 2018 at 11:48 AM Scott, W Alan <wascott at sandia.gov<mailto:wascott at sandia.gov>> wrote:
Trying to wrap my head around what you said.  Really basic question – is .pvtm files a viable file format?  Either it should be supported in ParaView readers, or it should be removed from Catalyst and VTK – correct?

I wrote up a bug here:  https://gitlab.kitware.com/paraview/paraview/issues/18172

Alan

From: Andy Bauer <andy.bauer at kitware.com<mailto:andy.bauer at kitware.com>>
Date: Tuesday, May 15, 2018 at 8:33 AM
To: W Scott <wascott at sandia.gov<mailto:wascott at sandia.gov>>
Cc: Utkarsh Ayachit <utkarsh.ayachit at kitware.com<mailto:utkarsh.ayachit at kitware.com>>, "paraview at paraview.org<mailto:paraview at paraview.org>" <paraview at paraview.org<mailto:paraview at paraview.org>>
Subject: Re: [Paraview] [EXTERNAL] Re: pvtm file format

Hi Alan,

I wouldn't describe it as a redundant file format, just a redundant file extension (like ExodusII with .e, .ex2, etc.). Actually, looking through the PV and VTK source code, like Utkarsh did before, there doesn't look to be anything that refers to .pvtm so maybe I'm just remembering things wrong here. Looking back though (https://www.vtk.org/Bug/view.php?id=10498) it does seem like at one time we used the .pvtm file extension but maybe that was by accident though.

As for writing out files from Catalyst, or even from ParaView, a user can select the writer and specify whatever they want for the file extension. Maybe that's where the issue arose.

Best,
Andy

On Mon, May 14, 2018 at 9:37 PM Scott, W Alan <wascott at sandia.gov<mailto:wascott at sandia.gov>> wrote:
Thanks Andy.  I’m hearing of numerous issues like thus, trying to wrap my head around same.

Let’s start with a few questions.  Where is the .pvtm file format documented?  Google doesn’t know...  Next, why have two redundant file formats?  One should be deprecated.  Why can Catalyst write this file format?  And last, of course, why can’t ParaView read it?

Alan

From: Andy Bauer [mailto:andy.bauer at kitware.com<mailto:andy.bauer at kitware.com>]
Sent: Monday, May 14, 2018 7:31 PM
To: Scott, W Alan <wascott at sandia.gov<mailto:wascott at sandia.gov>>
Cc: Ayachit, Utkarsh (External Contacts) <utkarsh.ayachit at kitware.com<mailto:utkarsh.ayachit at kitware.com>>; Paraview (paraview at paraview.org<mailto:paraview at paraview.org>) <paraview at paraview.org<mailto:paraview at paraview.org>>
Subject: Re: [Paraview] [EXTERNAL] Re: pvtm file format

The .pvtm is the same as the .vtm file, just a redundant file extension. Really, the .vtm format is parallel/partition aware where as the other .vt* extensions have a partitioned .pvt* format.
I'm a bit surprised that PV doesn't associate the .pvtm file with multiblock datasets. If you try to read in a .pvtm file though you just need to properly associate it with the XML multiblock data reader.

On Mon, May 14, 2018 at 9:14 PM Scott, W Alan via ParaView <paraview at public.kitware.com<mailto:paraview at public.kitware.com>> wrote:
I’ve never heard of these files either.  From my user:




I am writing planes of data in parallel with XMLMultiBlockWriter and it is generating *pvtm files.  However, paraview doesn’t seem to support this file format for reading?  I am trying to visualize the results and I can read the individual *vtp files, but it doesn’t accept the parallel file.

Then:


I will try to put something together for you soon.  I am writing this dataset from a slice while running catalyst.  I found a work around by using the MergeBlocks filter on the slice and then dumping that as an unstructured grid via XMLPUnstructuredGridWriter.

Back to me.

“.  I am writing this dataset from a slice while running catalyst.”  So, I figured I would start by asking if this is a Catalyst/ ParaView/ VTK file format (that I had never heard of)...    I have asked user for a dataset.

Thanks,

Alan


From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com<mailto:utkarsh.ayachit at kitware.com>]
Sent: Monday, May 14, 2018 7:08 PM
To: Scott, W Alan <wascott at sandia.gov<mailto:wascott at sandia.gov>>
Cc: ParaView <paraview at paraview.org<mailto:paraview at paraview.org>>
Subject: [EXTERNAL] Re: [Paraview] pvtm file format

I am not sure. A quick grep through the code in ParaView/VTK doesn't yield a hit. What's the context in which you encountered this?

Utkarsh

On Mon, May 14, 2018 at 9:05 PM Scott, W Alan via ParaView <paraview at public.kitware.com<mailto:paraview at public.kitware.com>> wrote:
What is a .pvtm file?  How can I make one with sources?

Thanks,

Alan

--------------------------------------------------------
W. Alan Scott
ParaView Support Manager

SAIC
Sandia National Laboratories, MS 0807
Org 9326 - Building 880 A1-K
(505) 284-0932   FAX (505) 284-5619

“When the facts change, I change my mind. What do you do, sir?”
John Maynard Keynes

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

_______________________________________________
Powered by www.kitware.com<http://www.kitware.com>

Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView

Search the list archives at: http://markmail.org/search/?q=ParaView

Follow this link to subscribe/unsubscribe:
https://public.kitware.com/mailman/listinfo/paraview
_______________________________________________
Powered by www.kitware.com<http://www.kitware.com>

Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView

Search the list archives at: http://markmail.org/search/?q=ParaView

Follow this link to subscribe/unsubscribe:
https://public.kitware.com/mailman/listinfo/paraview

_______________________________________________
Powered by www.kitware.com<http://www.kitware.com>

Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView

Search the list archives at: http://markmail.org/search/?q=ParaView

Follow this link to subscribe/unsubscribe:
https://public.kitware.com/mailman/listinfo/paraview

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://public.kitware.com/pipermail/paraview/attachments/20180516/74d6c250/attachment.html>

More information about the ParaView mailing list