how to resolve the 'dot indexing not supported for variables of this type' error?

I am using Matalb 2019b. I have a guide figure that I when I save it I get the error as below. The guide figure has been used at lot but since upgrading I now get the error. I can edit and update the associated .m file with no probelms.

The lines of code in the guidefunc are as follows:

layout_ed = getappdata(fig, 'GUIDELayoutEditor');
frame = layout_ed.getFrame;

Any suggestions will be most appreciated

[Darren Akehurst]

I should note all I had added was a simple radio button. The issue seems to be more an issue of saving a guide fig with the new version. It is a signicant appl which would take huge effort to upgrade to the new apps

[Walter Roberson]

Would you feel comfortable attaching the .fig and .m files for debugging?

[Darren Akehurst]

It has a lot of information II would prefer to keep private. Any suggestions on how to approach the issue would be really appreciated though

[Walter Roberson]

It needs a long debugging session. You have to trace the readSavedFigure call: the first parameter to it should be a non-empty layout editor object that would then get stored into the GUIDELayoutEditor property of the figure within the newGuideFig function near line 2368. You need to figure out whether a valid value is getting set there; if not then you would need to trace back to find out what is calling guidefunc with incorrect parameters or where the value is disappearing to. If a valid value is getting set, then it becomes a matter of tracking down why the value is disappearing.

Answer 1

[per isakson]

"I would prefer to keep private" Two alternatives remain

• Make a Minimal working example and upload it here
• Start debugging. Set a breakpoint at the line 1224. Invoke your code. When the execution halts at 1224 inspect the values of fig and layout_ed. Share your findings here. See Walter's comment.

And see

• Debug a MATLAB Program and
• Examine Values While Debugging