[Paraview] [EXTERNAL] Re: pvtm file format

Wed May 16 07:13:53 EDT 2018

No problem. We got where we needed to be eventually -- it would  have gone
faster if I didn't "remember" that the .pvtm isn't a proper VTK file
extension :)

On Tue, May 15, 2018 at 10:58 PM Scott, W Alan <wascott at sandia.gov> wrote:

> 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>
> 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> 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>
> *Date: *Tuesday, May 15, 2018 at 1:00 PM
> *To: *W Scott <wascott at sandia.gov>
> *Cc: *Utkarsh Ayachit <utkarsh.ayachit at kitware.com>, "
> paraview at paraview.org" <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> 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>
> *Date: *Tuesday, May 15, 2018 at 8:33 AM
> *To: *W Scott <wascott at sandia.gov>
> *Cc: *Utkarsh Ayachit <utkarsh.ayachit at kitware.com>, "
> paraview at paraview.org" <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> 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]
> *Sent:* Monday, May 14, 2018 7:31 PM
> *To:* Scott, W Alan <wascott at sandia.gov>
> *Cc:* Ayachit, Utkarsh (External Contacts) <utkarsh.ayachit at kitware.com>;
> Paraview (paraview at paraview.org) <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> 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]
> *Sent:* Monday, May 14, 2018 7:08 PM
> *To:* Scott, W Alan <wascott at sandia.gov>
> *Cc:* ParaView <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> 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
>
>
>
> ---------------------------------------------------------
>
>
>
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>
> Visit other Kitware open-source projects at
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>
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