Re: [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 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
>> > >
>> 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
>> __**___
>> Powered by www.kitware.com 
>>
>>
>> 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<
>> http://paraview.org/Wiki/**ParaView >
>>
>>
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>> 
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>> >
>>
>>
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Re: [Paraview] VTK-file written by ParaView cannot be read by ParaView

[Ian Krukow]

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
mailto:i.kru...@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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Re: [Paraview] VTK-file written by ParaView cannot be read by ParaView

[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 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
> __**_
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at http://www.kitware.com/**
> opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/**ParaView 
>
> Follow this link to subscribe/unsubscribe:
> http://www.paraview.org/**mailman/listinfo/paraview
>
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[Paraview] VTK-file written by ParaView cannot be read by ParaView

[Ian Krukow]

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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