# Points of inflection of a polydata Curve

**URL:** <https://discourse.vtk.org/t/points-of-inflection-of-a-polydata-curve/4849>\
**Category:** Development\
**Created:** [December 17, 2020, 4:25pm UTC](https://discourse.vtk.org/t/points-of-inflection-of-a-polydata-curve/4849 "2020-12-17T16:25:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Anish\_Basnet](https://discourse.vtk.org/user_avatar/discourse.vtk.org/anish_basnet/32/2676_2.png) [@Anish\_Basnet](https://discourse.vtk.org/u/Anish_Basnet)\
**Post date:** [December 17, 2020, 4:25pm UTC](https://discourse.vtk.org/t/points-of-inflection-of-a-polydata-curve/4849/1 "2020-12-17T16:25:29Z")

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Hello everyone,  
Is there any way to obtain points of inflection in VTK? I found out that a filter called vtkDecimatePro does offer a possibility. But it works only with triangular meshes. The curve that I have obtained is with the help of the class vtkCutter.

Best regards,  
Anish