MATLAB: How can i create a image array includes files from a specific folder

error in creating image database

how can i create a database from images in a folder? here is my code but it is giving error.
directory = fullfile('./buildings');
images = dir(fullfile(directory,'*.jpg'));
names = {images.name}';
I=zeros(numel(names),144,176,3); %size of the images are constant and 144*176*3
for k=1: numel(names)
      I{k} = imread(fullfile(directory,names{k}));
      I{k}=tempI;
      figure; imshow(I{k});
      %operations
  end
Error is this:
Cell contents assignment to a non-cell array object.
Error in application2exercise3 (line 9)
    I{k} = imread(fullfile(directory,names{k}));
Ty for your help.

Best Answer

What is tempI? It's not defined.
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