How do I fit smaller matrix into a larger matrix

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Abdul Rahim Mohammad
编辑： Abdul Rahim Mohammad 2019-4-30
Hello everyone,
I have A = matrix of 23x23, and I must reshape this matrix to the same size of an matrix I of 256x256. I want to form a 256x256 matrix that take all values in the 23x23 matrix and rest of the elements are zeros. How would I go about doing that?
I do not want to use pad, I simply want to create a zeros matrix with size of I and replace the values in zeros matrix with that of A.
Thank you for your time.

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madhan ravi
madhan ravi 2019-4-30
[m,n]=size(A);
I = zeros(256);
I(1:m,1:n) = A
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Abdul Rahim Mohammad
Abdul Rahim Mohammad 2019-4-30
编辑：Abdul Rahim Mohammad 2019-4-30
Thank you Madhan, could you generalize it a bit more? Lets say I didnt know the size of A and size of I beforehand? How would I perform the same operations?
Edit: nvm, I figured it out.
Thanks Madhan!

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