[vtkusers] vtkThreshold

[Polly Pui]

Hi,


Previously, I applied vtkThreshold with ThresholdByUpper and get the data extracted on 3D vtk dataset.

For example, i could get 500 points out of 5000 points after the thresholding with a criterion of 0.085.

        vtkThreshold *thresh = vtkThreshold::New();
thresh->SetInputConnection(meanCurve->GetOutputPort());
thresh->ThresholdByUpper(0.085);
thresh->AllScalarsOff();
thresh->Update();


Now, my question is, how i can do this process in an opposite way.

I want to get the threshold value which the number of the points are within 500-600.

Instead of I am the one who providing the threshold value manually.

//

If meanCurve points 500-600 provide threshold value

If meanCurve points 600-700 provide threshold value

...and so on

//


Thanks.


Best,

Polly



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