Matrix with some sort of pattern
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Hi everybody, i would like to make a matrices like this [1,1,1,1,1,0,0,0,0,0;0,0,0,0,0,1,1,1,1,1;] or this [-1 0 0;-1 0 0;-1 0 0;-1 -1 0;-1 -1 0; -1 -1 0;-1 -1 -1;-1 -1 -1;-1 -1 -1] in such a way that 'for' loop would be unnecessary.i was thinking something about repmat or so,because of the pattern that this kind of matrices seem to have.any ideas??? Thank you!!
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Matt J
2013-4-24
You could use KRON
>> kron(eye(2), ones(1,5))
>> kron(tril(ones(3)),-ones(3,1))
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Mishaal Amir
2022-11-17
How to do this for an 9 by 9 matrix, with the number 9s surrounding the borders and the 0s in the center of the matrix?
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