[Paraview] pvbatch + LoadState('..') +XDMF = empty image

[Kenji Takizawa]

Dear Ken, and dear Utkarsh,

I sent an email for the bug fix. But Kenneth applied it to different location.
Instead of line 148 (which is in UpdateInformationFunction), it was
applied to 172 (which is in UpdateInformationUniform).

So I would like to inform you this again. I believe this issue is also
related to this bug.
I had been fixed on my servers and working well. I am also using state
loadings with sever and client system.

Thank you,
Kenji Takizawa


On Fri, May 28, 2010 at 2:36 PM, Utkarsh Ayachit
<utkarsh.ayachit at kitware.com> wrote:
> Jens,
>
> I'd recommend not relying on Xdmf state loading or Python API in 3.6
> (or before) since that was broken. It has since been fixed for 3.8. I
> have requested the ARL/Xdmf folks to take a look at the hyperslab
> issue. I'll keep you posted. Once that segfault is fixed, state
> loading should not be an issue.
>
> Utkarsh
>
> On Fri, May 28, 2010 at 3:27 PM, Jens <jens-devel at gmx.de> wrote:
>> Hi Utkarsh,
>>
>> The problem is related to bug 10775
>> (http://public.kitware.com/Bug/view.php?id=10775) and hyperslabs in XDMF.
>> I attached an example which should reproduce the problems I discribe now:
>>
>> hyperslab on its own:
>> pv 3.6.2: loading test.xmf->dataset u_without_hyperslab works fine
>> pv 3.8.0: loading test.xmf->dataset u_without_hyperslab works fine
>> pv 3.6.2: loading test.xmf->dataset u_with_hyperslab works fine
>> =>!! pv 3.8.0: loading test.xmf->dataset u_with_hyperslab _segfaults_
>>
>> hyperslab and "Load/Save State":
>> pv 3.6.2: loading test_nohyper.pvsm works fine (contour is visible)
>> pv 3.8.0: loading test_nohyper.pvsm works fine (contour is visible)
>> =>! pv 3.6.2: loading test_withhyper.pvsm fails (contour _NOT_ visible)
>> =>!! pv 3.8.0: loading test_withhyper.pvsm _segfaults_
>>
>> XDMF+hyperslab never worked with "Load State". pv 3.6.2 loads the
>> pipeline but does not load the hyperslab-dataset. pv 3.8.0 segfaults as
>> it does loading hyperslab-datasets anyway.
>>
>> I hope you can reproduce the behaviour (the bugreport also has a
>> backtrace attached).
>> It would be great, if this problem could be fixed. But I am happy now to
>> know its the hyperslab .. that's the first step to a bugfix :)
>>
>> Greetings
>> Jens
>>
>> Utkarsh Ayachit schrieb:
>>> Jens,
>>>
>>> It would be great if you could post a state to reproduce this issue.
>>>
>>> Utkarsh
>>>
>>> On Fri, May 28, 2010 at 1:31 PM, Jens <jens-devel at gmx.de> wrote:
>>>> Hi Utkarsh,
>>>>
>>>> if I reload the state in paraview-gui it does not refresh ether.
>>>> I have to walk through the pipeline (bottom to top) and call "Apply".
>>>>
>>>> Greetings
>>>> Jens
>>>>
>>>>
>>>> Utkarsh Ayachit schrieb:
>>>>> Jens,
>>>>>
>>>>> Is the non-refreshed part of the pipeline visible in the view?
>>>>>
>>>>> Utkarsh
>>>>>
>>>>> On Fri, May 28, 2010 at 3:23 AM, Jens <jens-devel at gmx.de> wrote:
>>>>>> Hi Utkarsh,
>>>>>>
>>>>>> thank you for that hint.
>>>>>> I can see the bounding box now ...
>>>>>>
>>>>>> But somehow it does not refresh the whole pipeline.
>>>>>> What do I have to do, that all parts of pipeline are updated before I
>>>>>> write the image. Any idea?
>>>>>>
>>>>>> Greetings
>>>>>> Jens
>>>>>>
>>>>>> Utkarsh Ayachit schrieb:
>>>>>>> Jens
>>>>>>>
>>>>>>> Here's an updated script:
>>>>>>> =================
>>>>>>> from paraview.simple import *
>>>>>>>
>>>>>>> # reload state
>>>>>>> servermanager.LoadState('/tmp/state.pvsm')
>>>>>>>
>>>>>>> view = GetRenderViews()[0]
>>>>>>>
>>>>>>> ## render png
>>>>>>> view.ResetCamera()
>>>>>>> view.StillRender()
>>>>>>> view.WriteImage( "/tmp/Test1.png", "vtkPNGWriter" )
>>>>>>> ==================
>>>>>>>
>>>>>>>
>>>>>>> The problem was that your script was creating a new view, and not
>>>>>>> using the view created by the state file.
>>>>>>>
>>>>>>> Utkarsh
>>>>>>>
>>>>>>> On Thu, May 27, 2010 at 2:56 PM, Jens <jens-devel at gmx.de> wrote:
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> I try to use pvbatch to render a whole bunch of screenshots using a
>>>>>>>> script. pvbatch works fine if I simply create a sphere and write that
>>>>>>>> image to disk.
>>>>>>>>
>>>>>>>> But loading a predefined pipeline using LoadState('pstate.pvsm') which
>>>>>>>> includes a datset in XDMF file format fails.
>>>>>>>>
>>>>>>>> Any idea what I am doing wrong?
>>>>>>>> This seems to be related to bug 6495
>>>>>>>> (http://www.itk.org/Bug/view.php?id=6495&nbn=2), but the suggested
>>>>>>>> solution cannot be used with LoadState(..).
>>>>>>>>
>>>>>>>> Greetings
>>>>>>>> Jens
>>>>>>>>
>>>>>>>> ====================
>>>>>>>> from paraview import servermanager
>>>>>>>>
>>>>>>>> # connect to pvserver
>>>>>>>> servermanager.Connect()
>>>>>>>>
>>>>>>>> # reload state
>>>>>>>> #r = servermanager.LoadState('paraview_state.pvsm')
>>>>>>>>
>>>>>>>> # render png
>>>>>>>> view = servermanager.CreateRenderView()
>>>>>>>> view.ResetCamera()
>>>>>>>> view.StillRender()
>>>>>>>> view.WriteImage( "Test1.png", "vtkPNGWriter" )
>>>>>>>> ====================
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>>>
>>
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-- 
Kenji Takizawa
http://www.tafsm.org/ktaki
http://www.tafsm.org