[Paraview] problem configuring the output of a filter

[Natalie Happenhofer]

Hi!
I have problems configuring the output of my filter, the filter is a subclass of vtkDataSetToStructuredGrid and setting the output looks as following:

//setting the new point data
vtkSmartPointer<vtkFloatArray> new_scalars = vtkSmartPointer<vtkFloatArray>::New();

double inPtr[numOfTuples + 1]; //pointer for casting the values actually to double, so I can perform arithmetic operations with them
 float outPtr[numOfTuples + 1];
//calculating ..

new_scalars -> SetArray(outPtr,numOfTuples,1);



output -> SetDimensions(dims);
    output -> SetPoints(pts); //Now the points are set
    output -> GetPointData() -> SetScalars(new_scalars);
    output -> Squeeze();


dims are the dimensions of the input, which is a RectilinearGrid or a StructuredGrid, new_scalars is a vtkFloatArray. I believe that the "output->GetPointData() ->SetScalars(new_scalars)"-line is causing the problem, because I get the following error messages:

Program received signal SIGSEGV, Segmentation fault.
vtkFieldData::GetActualMemorySize 
at C:/ParaviewSource/ParaView3/VTK/Filtering/vtkFieldData.cxx:577
size +=this->Data[i]->GetActualMemorySize();

Backtracing, functions in vtkPVDataInformation and vtkSelfConnections are called, 
so I guess, this does not actually happen in my source code but in the rendering pipeline. As I did not change anything in the rendering pipeline, there must be an allocation or a call in my code with incorrect arguments, but I do not really know where to look for the error. 
Does anyone have an idea?

Thx,
NH


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