[Paraview] vtu file format

[Dominik Szczerba]

what I do is export legacy binary files from my C++ code and then
writing a small external vtkConvert* (10 lines of VTK code) utility to
convert the legacy files into xml. This works 100%.
--dsz

Thierry Dubuis wrote:
> No, sorry I did't find any information about that.
> There are information about XML part, binary datas must be encryted with
> Base64 algorithm and they could be compressed or not,
> but no information about datas organization.
> 
> But perhaps must I ask this question to the VTK developpers group ?
> 
> Thanks again for your help,
> 
> Thierry Dubuis
> 
> Dominik Szczerba wrote:
> 
>> on vtk.org in tech docs there is a pdf decribing the vtk formats. does
>> it not provide answers to your questions?
>> --dsz
>>
>> Thierry Dubuis wrote:
>>  
>>
>>> Hello,
>>>
>>> I made the test and it's the same thing in Little and Big Endian.
>>> I made another test, in Little Endian I add the size of the data block
>>> at the beginnig of this block In the PointData and CellData
>>> Paraview load my case and the results are Ok.
>>>
>>> Is it the same organization in the Coordinates, Connectivity, Offset and
>>> Types Blocks ?
>>>
>>> Bests regards,
>>> Thierry Dubuis
>>>
>>> Dominik Szczerba wrote:
>>>
>>>   
>>>
>>>> I though you said you had used little endian when producing your files.
>>>> If you get errors the first thing I would try is swapping bytes to big
>>>> endian arrangement.
>>>> --dsz
>>>>
>>>> Thierry Dubuis wrote:
>>>>
>>>>
>>>>     
>>>>
>>>>> Why ?
>>>>>
>>>>> With the big endian I need no size information ?
>>>>>
>>>>> Thierry Dubuis
>>>>>
>>>>> Dominik Szczerba wrote:
>>>>>
>>>>>  
>>>>>
>>>>>       
>>>>>
>>>>>> VTK uses big endian
>>>>>> --dsz
>>>>>>
>>>>>>
>>>>>>
>>>>>>   
>>>>>>         
>>>>>>
>>>>>>> So first I try to write my data on PC in Little Endian and
>>>>>>> crypted in
>>>>>>> Base64.
>>>>>>> When I try to load it in Paraview 2.5 I have an error, I debug and
>>>>>>> find
>>>>>>> Paraview reads 4 characters which is the size of the following
>>>>>>> binary
>>>>>>> block ???
>>>>>>>
>>>>>>> Have a doc which more precision about this file format than the vtk
>>>>>>> file
>>>>>>> formats for VTK Version 4.2 (where I don't find the information
>>>>>>> about
>>>>>>> this block size) ?
>>>>>>>
>>>>>>> Thanks for your help.
>>>>>>>
>>>>>>> Best regards,
>>>>>>> Thierry Dubuis
>>>>>>> _______________________________________________
>>>>>>> ParaView mailing list
>>>>>>> ParaView at paraview.org
>>>>>>> http://www.paraview.org/mailman/listinfo/paraview
>>>>>>>
>>>>>>>                
>>>>>>
>>>>>>
>>>>>>            
>>>>
>>>>
>>>>
>>>>     
>>
>>
>>  
>>

-- 
Dominik Szczerba, Dr.
Computer Vision Lab CH-8092 Zurich
http://www.vision.ee.ethz.ch/~domi