How to create such 3D chaos?

please click the image to get a clear view.

Hello @Xiaofei_Ying,

Using Lorenz Attractor — Matplotlib 3.4.2 documentation as a basis point, I’ve translated this into Dynamo’s CPython. Note, you’ll need to install Numpy to get this to work, so please have a look at: Customizing Dynamo's Python 3 installation · DynamoDS/Dynamo Wiki · GitHub

This gives us this Lorenz representation:

XiaofeiYing_LorenzCurves.dyn (12.0 KB)