3D curve through points

ParaView Support
1

Hi there,

I am trying to use ParaView to visualize a curve in 3D space, defined by a set of (x, y, z) points parameterized by time. I would also like to color different parts of the curve by values defined along it (like the magnitude of a velocity field, or any other scalar field). I am wondering what the most efficient way to do this would be?

My first thought was to define the dataset as a VTK Unstructured 1D Mesh in 3-space, and then assign a scalar field to it as usual. Just figured I’d check and see if there’s an easier way, given that I’m basically using PV as a 3D matplotlib in this use case. There are other things I’d like to do with the data which necessitates my use of PV however.

Thanks!
Sam

2

Not exactly an answer to your question, but you could have a look here:
pyVista spline

3

Hello,

What you are looking for is a Programmable filter. See section 5.2.5 (Helix Source) in this link:

https://docs.paraview.org/en/latest/ReferenceManual/pythonProgrammableFilter.html

regards

Miguel

4

Awesome, thanks so much everyone! Exactly what I was looking for but didn’t know the right keywords.