Orange Predictor Widget Error Message "Field7 Not In Domain"

Question

When I connect my scoring data and a classifier (classification tree) to the Orange Canvas Predictor Widget I get an error message "Field7 Not in Domain". My scoring data does have a Field7, and the classification tree was trained with data that has a Field7, and also shows it uses Field7. Both the Field7 in my data and in the training data I used to build the classifier are continuous.

What is the problem here, and how can I resolve it?

Thanks...

Answer 1

I'd say the training and testing data should have matching domains, i.e., if you trained on data with X, Y, Z features, your testing or unlabeled data should also contain X, Y, Z features. Otherwise, how could the tree know which way to go?

Data Science SE or Orange's issue tracker might be somewhat more appropriate venues for this programming-unrelated question and you'll probably get more answers there.