[vtkusers] Scalar value minima in PolyData

[David.Pont at ensisjv.com]

"Kevin H. Hobbs" <hobbsk at ohiou.edu> wrote on 22/11/2007 02:40:31:

> Is there a better way to find all of the positions of the scalar value
> minima in a PolyData than to :
>    loop over all of the points
>       loop over all of the cells the point is in
>          loop over all of the other points in the cell
>             compare the values of the other points to the first points
value
>       save the points location if it is value is less than all of
> its neighbor's values.
>
>
vtkThresholdPoints can be used to extract all points with a scalar value <=
a specified threshold, but if you are after local minima then you are on
the right track.
   DP
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