How I can view the misclassified records and correct classified records in classification learner

I am performing classification using knn. how I can see the records which are misclassified by the classifier

Answer 1

[Hamoon]

Considering the very nature of knn classifier, your question is logically wrong. It has nothing to do with Matlab actually. If you are passing through the correct label for training data, and you are setting a number for k and a distance function to calculate distances, then you are not allowed to change anything else. If you want to classify your data by yourself that won't be knn classifier. In knn, only test(sample) data can be classified wrong which is the output of the classifier and you can see them and you are not allowed to change them.

[Rashmi Goel]

I do not want to change them I only want to see the records which are incorrectly predicted. How I can see them? As I am able to find accuracy in terms of percentage.

[Hamoon]

the output of the following function is what you want, Class variable shows the predicted classes for sample data.

 Class = knnclassify(Sample, Training, Group)

[Walter Roberson]

And then you compare that Class to the class you know for the data.

[Hamoon]

Yes, exactly, thank you Walter.