Hi Shih-Heng,

This is not straightforward because the 3D Layout is not fully implemented in the ZOS-API. To make things worst, the 3D Layout is also not implemented in ZPL (although the number of rays is available for 2D Layout in ZPL).

Let me share what you could try with an example. Suppose you want to switch between different values of Number Of Rays, say 10, and 100 for example. You can open the settings of your 3D Layout, set the Number Of Rays to 10, and press the Save button. The Save button creates a file that has the same name as your lens file but with the *.CFG extension. You can rename this file, for example, 3D_Layout_10_rays.CFG, and then do the same with 100 (the file will be called 3D_Layout_100_rays.CFG). Then, in the ZOS-API, you can get the settings of your 3D Layout and use the LoadFrom method to load the settings of either file:

# Create a new 3D Layout
Layout3D = TheSystem.Analyses.New_Analysis(ZOSAPI.Analysis.AnalysisIDM.Draw3D)

# Load specific settings from a *.CFG file
Layout3D.GetSettings().LoadFrom('<full_path>\3D_Layout_10_rays.CFG')

# Apply settings and run analysis
Layout3D.ApplyAndWaitForCompletion()

This is in Python, but I’m fairly sure you can make it work with MATLAB. The main issue is that you have to create those *.CFG files manually…

For the Line Thickness, since its not in the *.CFG file (as far as I’ve tested), I don’t think it is possible.

Hope this helps, and take care,

David