I wish to export a vector field created by Mathematica in a VTK format to visualize in Paraview. All I have are coordinates and vectors defined at each co-ordinate. How do I do this? I can't figure out how to use Export to do this. I keep getting the error message: List cannot be exported to the VTK format. I am able to reproduce this stack exchange post which is very related but of course this involves glyphs that I don't want since I would like to visualize the flow in different ways.

Thank you!

An alternative way of stating this question is: How do I export the VectorPlot3D object in VTK format?