[vtkusers] how do I traverse a probe (a line) result to get the values?

[Nico Vermaas]

Hi,

I shoot a line (a vtkLineSource) through a cube as a vtkProbeFilter and I get a nice xyplot with the values of the scalars on that line when I connect the probe to the xyplot like this:

myLine->SetPoint1(x1,y1,z1);
myLine->SetPoint2(x2,y2,z2);
myProbe->SetInput((vtkDataSet*) myLine->GetOutput());
myProbe->SetSource((vtkDataSet*)myImageData);

myXYplot->AddInput(myProbe->GetOutput());

QUESTION: But how can I traverse this output to read those values myself? 

(I try to find the highest pixel value in datacube this way, in the direction of a pick. It seems like a terribly elaborate way of doing it, but I cannot find a better way, so if anybody has suggestions please let me know).

Nico