Why do I get “cannot load an object of class ‘compactcl?assificati?on
Why do I get “cannot load an object of class ‘compactcl?assificati?onECOC’” after compiling a standalone application of a machine learning model?
I have a trained machine learning model saved as a MAT file that is loaded in my App Designer application.
When I compile the app into a standalone application with MATLAB Compiler, I get the following error when running it:
cannot load an object of class 'compactclassificationECOC'NOTE:-
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During the compilation process, a dependency analysis is run to pick up files that the code relies on. In this case, the dependent functions are specified as a value in the trained model struct loaded through a MAT file. This causes the analysis to miss the necessary files.
To work around this, we can add a “function pragma” to the function to make the dependency explicit:
% App designer method
function myAppCallback(app, event)
%#function classreg.learning.classif.CompactClassificationECOC
[ additional code ]The “function pragma” was added based on the “ClassificationSVM” values in the trained model struct:
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