How can i make an image from a .mat file?

I have a .mat file. I want to make an image from that .mat file. The image i am getting is attached below. The image is just like a line. But i want it as a rectangle/square type of image.The code i am following is as follow-

filename = 'xcorrelation.mat';
s = load(filename);
% Extract array from structure.
n = s.xcorrelation;
imshow(n,[], 'InitialMagnification', 'fit');
axis on;

Answer 1

[KALYAN ACHARJYA]

The data n=7544x53 double, which is shown in the figure as per data size, if the data have more columns then it may be show more wider ractangle.

If I added more random columns with n, then see the result

Hence it shows the n as per the dataset size, which is 7544x53