[Paraview] VTK-file written by ParaView cannot be read by ParaView

[Sebastien Jourdain]

vtk is a valid extension but maybe not for the writer factory for some
reason.


On Wed, Nov 28, 2012 at 3:10 PM, Ian Krukow <i.krukow at tu-braunschweig.de>wrote:

> Ok, that helps for a possible solution. Thanks!
> With
>
> writer = CreateWriter('sol_i=0.vtm')
> writer.UpdatePipeline()
>
> I get an XML file, that can be loaded back into ParaView.
> ---
> Still the behaviour I noticed before remains strange.
>
> I used the extension ".vtk". From the GUI, I chose "Save Data", and then
> "Legacy VTK Files(*.vtk)", which should be a valid option, because it is
> explicitly offered. The pvpython commands were
>
> writer = DataSetWriter(slice)
> writer.FileName = 'sol_i=0.vtk'
> writer.FileType = "Ascii"
> writer.UpdatePipeline()
>
> The result of both is the same, i.e. a file with the following structure:
>
> # vtk DataFile Version 3.0
> vtk output
> ASCII
> DATASET MULTIBLOCK
> CHILDREN 96
> CHILD 0
> # vtk DataFile Version 3.0
> vtk output
> ASCII
> DATASET POLYDATA
> POINTS 39714 float
> ...
> POLYGONS 77132 308528
> ...
> POINT_DATA 39714
> ...
> ENDCHILD
> CHILD 0
> # vtk DataFile Version 3.0
> vtk output
> ASCII
> DATASET POLYDATA
> POINTS 219146 float
> ...
> ENDCHILD
> CHILD 0
> ...
> ENDCHILD
> ...
>
> Each part between "CHILD 0" and "ENDCHILD" would be a complete Legacy VTK
> file in itself.
> The ParaView version is 3.14.1.
>
> By the way, when I use
>
> writer = CreateWriter('sol_i=0.vtk')
>
> I get the following error message:
>
> ERROR: In [...]\src\ParaViewCore\**ServerManager\**vtkSMWriterFactory.cxx,
> line 374
> vtkSMWriterFactory: No matching writer found for extension: vtk
>
> Is ".vtk" not a valid file extension?
>
>
>
> Am 28.11.2012 19:55, schrieb Sebastien Jourdain:
>
>> There is no multi-block legacy format. What file extension did you try
>> to write ? It should be .vtm by default.
>>
>>
>>
>> On Wed, Nov 28, 2012 at 11:52 AM, Ian Krukow
>> <i.krukow at tu-braunschweig.de <mailto:i.krukow at tu-**braunschweig.de<i.krukow at tu-braunschweig.de>>>
>> wrote:
>>
>>     Hi,
>>
>>     I have loaded an EnSight file (results from an external code) into
>>     ParaView, taken a slice from it and saved it in Legacy VTK format.
>>     The result is a VTK file with multiblock datasets. When I try to
>>     load it again, ParaView does not recognise the file format and asks
>>     me to choose a reader. Why does ParaView not know the format of a
>>     file, that it has written itself?
>>
>>     The written VTK file contains several "CHILDREN" with part of the
>>     data (I suppose that it is just divided) plus several empty
>>     CHILDREN. If I put the data of a single CHILD into a seperate file,
>>     I can load it into ParaView without any problems.
>>     Now, I could manipulate the file "by hand" (or script), so that I
>>     get a file I can use again in ParaView, but I just do not think,
>>     that this is the way it is supposed to be. Can somebody help me?
>>
>>     Best regards
>>     Ian
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