From the Window menu select Text Output, to bring the text window forward and make it
active, since it contains the classification results. The “TRAINING CLASS
PERFORMANCE (Resubstitution Method)” table tabulates how the pixels of each field
and class were classified. See example table below. There should be nearly 100% accuracy
on the training fields. If the Reference Accuracy is particularly low (say less than 50%) for
a class, then the training pixels for that class should be reexamined and new training pixels
selected