Classification learner - identify false prediction indexes

In classification learner app, after training a model, how to identify the indexes (in feature table) of false predictions?

Answer 1

[Bernhard Suhm]

Unfortunately, that isn't supported directly in the Classification Learner. But you can export your trained model to the MATLAB workspace, predict on a set of held-out data there, and identify which observations were misclassified.

Answer 2

[Brissieux Marc]

Thanks Bernhard for your answer. I experimented this solution with success while waiting for an answer. I understand that the Classification Learner App may have those kind of limitations. Marc