Knn classification on feature matrix

I'm trying to learn KNN classification.I have used SURF descriptor for feature extraction on images, and stored result ie feature in a matrix of 24*64, 24 row corresponding to 24 images with 64 features. Now i want to classify each image (row) as one class using KNN classification.how to do this

Thank you

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/stats/classification-using-nearest-neighbors.html