[vtkusers] vtkDataSet Object

[David Doria]

On Mon, Dec 14, 2009 at 2:26 PM, Naveen <a1naveen at gmail.com> wrote:
> Hi All,
>
> I have a vtkDataSet object with some X, Y, Z coordinates and certain
> POINT_DATA values. I want to add more POINT_DATA to the existing vtkDataSet
> object and change the value of Z coordinate dimension by 1. How can this be
> done?
>
> Thanks,
> Naveen


I'm not exactly sure if this is what you are asking, but this demo
shows how to add a new point as well as change an existing point:

#include <vtkPoints.h>
#include <vtkSmartPointer.h>

int main(int argc, char *argv[])
{
  vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
  points->InsertNextPoint(0,0,0);

  double p[3];
  points->GetPoint(0,p);
  vtkstd::cout << "p: " << p[0] << " " << p[1] << " " << p[2] << vtkstd::endl;

  double newpoint[3] = {1.0, 1.0, 1.0};
  points->SetPoint(0, newpoint);

  double pnew[3];
  points->GetPoint(0,pnew);
  vtkstd::cout << "pnew: " << pnew[0] << " " << pnew[1] << " " <<
pnew[2] << vtkstd::endl;

  return 0;
}

Let us know if this does not answer your question.

Thanks,

David