[vtkusers] Storing an independent piece of information in a VTP file

[David Doria]

It looks like even if I want to store only a single number I need to use a
vtkIntArray, like this?

  vtkIntArray *intArray = vtkIntArray::New();
  intArray->SetNumberOfComponents(1);
  intArray->InsertNextValue(4);
  intArray->SetName("FileIndex");
 pdata->GetFieldData->AddArray(intArray);

Thanks,

David


On Fri, Apr 17, 2009 at 1:44 PM, David E DeMarle
<dave.demarle at kitware.com>wrote:

> Yes. That is what the field data is for.
>
> All DataSets have three independent containers for arrays.
>
> ds->GetPointData() returns the container that holds point associated
> values.
> ds->GetCellData() returns the container that holds cell associated values.
> ds->GetFieldData() returns the general purpose (whole data set
> associated) container
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 28 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-371-3971 x109
>
>
>
> On Fri, Apr 17, 2009 at 1:41 PM, David Doria <daviddoria at gmail.com> wrote:
> > Say I have a vtp file which contains 100 points (and vertices). I know
> how
> > to add a vector of the same length with information about each point, but
> is
> > there a way to add just a single integer or double or something? For
> > example, if I want to know this was the 4th file, I would want to store
> > FileIndex=4 in the file. If I add a vtkIntArray with only one element,
> > paraview gets mad when I open the file because that array is not the same
> > length as the point array.
> >
> > This is what I was doing:
> > vtkSmartPointer<vtkIntArray> FileIndex =
> > vtkSmartPointer<vtkIntArray>::New();
> >     FileIndex->SetNumberOfComponents(1);
> >     FileIndex->SetName("FileIndex");
> >     FileIndex->InsertNextValue(4);
> >     pdata->GetPointData()->AddArray(FileIndex);
> >
> > What I want to do would be something like this:
> >     pdata->AddData("FileIndex")->AddValue(4); //this is not valid VTK
> syntax
> >
> > Is there any way to do this?
> >
> > Thanks,
> >
> > David
> >
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