@John.Hygelund

This works for me in Python:

geom = TheSystem.Analyses.New_GeometricImageAnalysis()

settings = geom.GetSettings().__implementation__
settings.Reference = ZOSAPI.Analysis.Settings.ReferenceGia.ChiefRay

geom.ApplyAndWaitForCompletion()

Ignore the __implementation__, this is a peculiarity of Pythonnet I believe. The line:

settings.Reference = ZOSAPI.Analysis.Settings.ReferenceGia.ChiefRay

Should work in MATLAB. Whenever a setting is implemented as a drop-down menu in the user interface, you should expect that an Enumeration is used in the ZOS-API. This means, the corresponding setting is probably not a string such as “Chief Ray”. Instead, it should be coming from a list of predefined values.

Also, in your code you wrote ReferenceGia, this is a type, the property is Reference. I hope this helps.

Take care,

David

@David.Nguyen ,

Thank you for the support, your example works in Matlab.

I appreciate you explaining the enumeration for the drop downs.

Thanks again!