How to loop through several tiff images and reshape them

I have 6 images which all have the same number of rows and columns (Basically 6 optical bands of one remote sensing imagery). The original size of each image is 1455*1464. I want to loop through them, then reshape each of them into a vector with 1455*1464 (=2130120) rows and 1 column. So far, I only know how to manually load images and do something to them, but don't understand loop. I appreciate any help! Thank you! The code looks like this:

for i = 1:1455 
    for j = 1:1464
        for h = 1:6
            A(1,h) = reshape(image(i,j,h), 2130120,6)
        end
    end
end

I do not think it is correct. Every time I run it, it gives me the error message: Error using reshape To RESHAPE the number of elements must not change.

Answer 1

[Jan]

What is you input? Does "image" contain an [1455 x 1464 x 6] array? If so, use:

img = reshape(img, 1455*1464, 6);

to get a [2130120 x 6] matrix. You do not need loops to do this.

With loops you can omit the reshape:

A = zeros(2130120, 6);  % Pre-allocate!!!
for i = 1:1455 
  k = 0;
  for j = 1:1464
      for h = 1:6
          k       = k + 1;
          A(k, h) = img(i,j,h);
      end
  end
end

Or use:

k = i + (j - 1) * 1455;