[vtkusers] vtkImageAccumulate

[Ula Popov]

Hello all,

I have an object of class vtkImageData.
It has two arrays: density (scalar) and velocity (vector).

I want to know mean and median values of the density field.

I tried to use vtkImageAccumulate to achieve this goal, but
my program crashes on my input (actually, I don't know how
to specify on which of the arrays I want to apply. How
should I do it?)
When I tried to specify origin and spacing, I got similar result (seg fault)

        vtkImageAccumulate *Accumulate = vtkImageAccumulate::New();

Accumulate->SetInput(grid);


Accumulate->Update();
<------- crashes here
        double *mean = Accumulate->GetMean();


Thank you!
ula
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