[Paraview] How to get back the first line of a VTK legacy file

[Fred Fred]

Hmm, I tried it without success:

FIELD FieldData 1
FEmethod 1 1 string
Lagrange

yieds to:

============================================
ERROR: In /usr/local/ParaView3/VTK/Filtering/vtkDataSet.cxx, line 439
vtkPolyData (0xae3eac0): Cell array FEmethod with 1 components, has only 1 tuples but there are 4 cells

ERROR: In /usr/local/ParaView3/VTK/Parallel/vtkPDataSetReader.cxx, line 921
vtkPDataSetReader (0xa5d5c60): Attribute Mismatch.

ERROR: In /usr/local/ParaView3/VTK/Filtering/vtkExecutive.cxx, line 757
vtkCompositeDataPipeline (0xa5d6420): Algorithm vtkFileSeriesReader(0xa5a2600) returned failure for request: vtkInformation (0xae3e650)
 Debug: Off
 Modified Time: 97070
 Reference Count: 1
 Registered Events: (none)
 Request: REQUEST_DATA
 FROM_OUTPUT_PORT: 0
 FORWARD_DIRECTION: 0
 ALGORITHM_AFTER_FORWARD: 1
============================================


while:

FIELD FieldData 1
FEmethod 1 4 string
Lagrange Lagrange Lagrange Lagrange

works!

> Date: Tue, 23 Feb 2010 17:07:02 -0500
> Subject: Re: [Paraview] How to get back the first line of a VTK legacy file
> From: utkarsh.ayachit at kitware.com
> To: stan1313 at hotmail.fr
> CC: paraview at paraview.org
> 
> Yes, in field data, the number of tuples doesn't have to match the
> number of points or cells, so you can have arbitrary length arrays.
> 
> Utkarsh
> 
> On Tue, Feb 23, 2010 at 4:51 PM, Fred Fred <stan1313 at hotmail.fr> wrote:
> > Does it mean that a field data array store only the variable once for all
> > the dataset? I would like to avoir having the same value stored for each
> > component.
> >
> >> Date: Tue, 23 Feb 2010 12:51:14 -0500
> >> Subject: Re: [Paraview] How to get back the first line of a VTK legacy
> >> file
> >> From: utkarsh.ayachit at kitware.com
> >> To: stan1313 at hotmail.fr
> >> CC: paraview at paraview.org
> >>
> >> A possible alternative to put such additional parameters in a field data
> >> array.
> >>
> >> On Tue, Feb 23, 2010 at 6:34 AM, Fred Fred <stan1313 at hotmail.fr> wrote:
> >> > The first - not comment - line in a legacy VTK file is free for the user
> >> > and
> >> > can be used to mention, let us say, an approximation method to use with
> >> > the
> >> > data for instance, at least I would like to use it for this purpose.
> >> > This line can be got back in a C++ code by using
> >> > vtkDataReader::GetHeader().
> >> > Is it possible to get ot from the VTK dataset instead? since a filter
> >> > has
> >> > only access to the data, not to the reader.
> >> > Or is it another (better) way to encode general information in a
> >> > dataset? I
> >> > suppose vtkInformation can be used for this purpose but where does it
> >> > appear
> >> > in a file?
> >> >
> >> >
> >> >
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