[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
> <i.krukow at tu-braunschweig.de <mailto: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
>     _________________________________________________
>     Powered by www.kitware.com <http://www.kitware.com>
>
>     Visit other Kitware open-source projects at
>     http://www.kitware.com/__opensource/opensource.html
>     <http://www.kitware.com/opensource/opensource.html>
>
>     Please keep messages on-topic and check the ParaView Wiki at:
>     http://paraview.org/Wiki/__ParaView <http://paraview.org/Wiki/ParaView>
>
>     Follow this link to subscribe/unsubscribe:
>     http://www.paraview.org/__mailman/listinfo/paraview
>     <http://www.paraview.org/mailman/listinfo/paraview>
>
>