If I run this code:
load fisheriris
x = meas;
y = species;
yhat = classify(x,x,y);
[cm,order] = confusionmat(y,yhat);
the confusion matrix cm indicates a count of 2 in the [2,3] entry. Here's how I can locate those two rows:
find(strcmp(y,order{2}) & strcmp(yhat,order{3}))
Here my variables y and yhat are cell arrays of strings. You may have to adjust this if your inputs to confusionmat are different data types.
