MATLAB: How to create a 3d stack of multiple images in Matlab

Question

Can someone help with creating a 3D stack in Matlab. I have used this line of codes, but it seems that my code stacks up the same image as many times as specified.

clear all;
Imatrix = []; 
for i=1:500
  images{i} = imread(sprintf('0001.tif',i));
  Imatrix = cat(3, Imatrix, images{i});
end

I have a folder containing 500 images, and i want to stack the images serially as named.

Thanks

Answer 1

      images{i} = imread(sprintf('%04d.tif',i));