[Paraview] Plugin works - doesnt - works - doesnt - ...

[Christian Werner]

I have just confirmed that when using Paraview 3.6, even with the -dr 
option, everything works fine. Whether the plugin is located such that 
it is loaded automatically or I load it myself doesn't change anything. 
It works.

Also, I traced the image down to the point where it vanishes in Paraview 
3.7. It is definetely during the ITK filtering. The conversion to ITK 
works, but then it disappears. Maybe it isn't a Paraview issue after all...?


Christian Werner wrote:
> Best thing is, when I just close the "odd" ParaView sessions right 
> after startup (no image loading, nothing, just close), the filter 
> always works. The plugin is loaded on startup though. When I disable 
> autoload and load the filter on demand, then it again never works. It 
> seems to get lost in ITK though, I have checked that now. The 
> vtkImageData input that arrives at SimpleExecute is okay, but after 
> converting back to VTK its gone...
>
> But then again, in ParaView 3.6 and VTK-only it works perfectly.
>
>
> Christian Werner wrote:
>> Like this I always get the error message.
>>
>> This is what I wanted to say, the first time I start up ParaView 
>> (after rebooting) always failed.
>>
>>
>> Utkarsh Ayachit wrote:
>>> If you start paraview with "-dr" command line option everytime, do you
>>> still see the odd/even behavior?
>>>
>>> Utkarsh
>>>
>>> On Thu, Mar 18, 2010 at 2:20 PM, Christian Werner
>>> <christian.werner at rwth-aachen.de> wrote:
>>>  
>>>> Hi!
>>>>
>>>> I am experiencing strange behaviour in ParaView. Believe it or not, 
>>>> I have a
>>>> plugin that works every second time I start Paraview. I am doing 
>>>> the exactly
>>>> same thing with one specific image, all steps are absolutely 
>>>> identical,
>>>> still it works exactly only every second time.
>>>> If I have, say, an even Paraview Session, the plugin works any 
>>>> time. I can
>>>> use it as much as I like, change values, update it, remove it, use 
>>>> it again,
>>>> ... it just works.
>>>>
>>>> The other (odd) time I get:
>>>>
>>>>
>>>> Warning: In /opt/ParaView3.7/Servers/Filters/vtkTexturePainter.cxx, 
>>>> line 180
>>>>
>>>> vtkTexturePainter (0x1b64340): Failed to locate selected scalars. 
>>>> Will use
>>>> image scalars by default.
>>>>
>>>>
>>>> This holds for an older and the actual cvs version 3.7. When I 
>>>> compile the
>>>> plugin for 3.6 it works ALWAYS.
>>>>
>>>> I have difficulties in locating what the problem is. It seems that 
>>>> it is
>>>> because I am using ITK filters in this plugin (derived from
>>>> vtkSimpleImageToImageFilter) - all my VTK-only filters work without a
>>>> problem. Maybe these scalars get somehow messed up during the 
>>>> conversion
>>>> between ITK and VTK (every second time ...)
>>>>
>>>> I know this most probably won't help you developers find any bug 
>>>> but I am
>>>> asking because maybe this is somehow a known issue...? Something 
>>>> must have
>>>> changed since Paraview 3.6 here... Since it works for many image 
>>>> types it is
>>>> quite big, so I can't attach it to let you check this.
>>>>
>>>>
>>>> Best regards,
>>>> Christian
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>>>>     
>>
>> _______________________________________________
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>
> _______________________________________________
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>
> Visit other Kitware open-source projects at 
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>
> Please keep messages on-topic and check the ParaView Wiki at: 
> http://paraview.org/Wiki/ParaView
>
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