[Paraview-developers] Strange Problem with vtkKdTreePointLocator

[Amit Prabhakar]

Hi Utkarsh,

Thanks for your suggestion. I used vtkOctreeIncrementalPointLocator class
and it worked fine. It also helped me in managing the duplicate points
inside a vtkPolydata.


Any idea how a vtkCellArray class can filter the duplicate cells?

Thanks again,

On Feb 1, 2017, at 23:18, Amit Prabhakar <amitprabhakar05 at gmail.com> wrote:

Hello All!


I am facing a strange problem with vtkKdTreePointLocator class that says:

*ERROR : In /path/to/VTK-build/Common/DataModel/vtkLocator.cxx line 49*
*vtkPointLocator (0xf132d0): Input Not set*


I am setting the vtkKdtreePointLocator using a polydata. The poly data get
2-3 points and a cell added to it, in a for loop. After every loop
operation, we update the poly data, the kdtreelocator and BuildLocator().

*vtkKdTreePontLocator *kdt = vtkKdTreePointLocator::New();*
*kdt->SetDataSet(polydata_new);*

*for(int i=0;i<1000;i++)*
*{*
* ….  //the operations to add a few points and a cell to polydata_new *
* <check if there is a point in kdt that if near-enough to an arbitrary
point. Do some point insertion to polydata_new>*

* kdt->SetDataSet(polydata_new);*
* kdt->BuildLocator();*
* kdt->Update();*


*}*


This seems like a simple operation, but am not able to figure out why this
happens. Your help can put my brains straight.

Thanks in advance!
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