The following files are provided:

$1.$ dzip.mat and azip.mat: the first is a vector that holds the digits $($the number$)$ and the second is an array of dimension $256$ x $1707$ that holds the training images. The images are vectors of dimension $256,$ which have been constructed from $16$ x $16$ images.

$2.$ dtest.mat and testzip.mat hold the test data.

$3.$ ima$2.$m takes an image vector as input and displays it$.$