VTK/Paraview Programmable source for spheres with specific radius

Question

I want to visualize a list of spheres, each one with its specific radius. I had the same problem with lines but I solved it with @Nico vuaille's https://stackoverflow.com/users/10219194/nico-vuaille answer as:

import vtk
from random import uniform
points = vtk.vtkPoints()
lines = vtk.vtkCellArray()
widths = vtk.vtkDoubleArray()
widths.SetName("width")

for i in range(60):
  pt1 = points.InsertNextPoint(uniform(0, 100), uniform(0, 100), 0)
  pt2 = points.InsertNextPoint(uniform(0, 100), uniform(0, 100), 0)
  w = uniform(0,3)
  widths.InsertNextValue(w)
  widths.InsertNextValue(w)
  lines.InsertNextCell(2, [pt1, pt2])

output.SetPoints(points)
output.GetPointData().AddArray(widths)
output.SetLines(lines)

However, I'm not able to do the same for spheres since I can't find a "sphere" filter. Thanks in advance for you help, Best Regards, Hamid Rajabi.

Answer 1

In ParaView, you can use the Glyph Filter. It display a predefined geometry on given points. You can use predefined shape (such as sphere). Or you can also use your own geometry by using Glyph with custom Source instead.