Load Class Diagram Error (conversion from double to cell is not possible)

I am trying to open a Class Diagram I saved in the Class Diagram Viewer previously, and it fails to open the file. I get the following:

>> h = matlab.diagram.ClassViewer;
>> h.load('class_diagram_file.mldatx')
Conversion to double from cell is not possible.

Error in classdiagram.app.core.ClassDiagramApp/loadFromFactoryImpl

Error in classdiagram.app.core.ClassDiagramApp>@(ops)self.loadFromFactoryImpl(factory)

Error in classdiagram.app.core.ClassDiagramApp/loadFromFactory

Error in classdiagram.app.io.IOMgr/loadFrom

Error in classdiagram.app.core.ClassDiagramApp/loadDiagram

Error in matlab.diagram.ClassViewer/load

When this happens, the ClassViewer dialog box appears, but is empty. I cannot recover the file I previously saved.

[Maximilian Tontsch]

Having the same issue. I cannot save any class diagram and then reopen it. Upon opening the .mldatx file, I always get the error:

Error using open (line 143) Conversion from double to cell is not possible.

Answer 1

[Zinea]

Hi Micah,

It appears you are facing difficulties loading a previously saved `.mldatx` file in the Class Diagram Viewer, and it seems this issue is present in MATLAB version R2021b. Upon further investigation, it appears that upgrading to the latest version, MATLAB R2023b, resolves this issue and allows the diagram to load smoothly.

Hope this helps!

Best,

Zinea