MATLAB: How to create a specific matrix from an array

MATLABspecific matrix

Hi,
Is there anyone who can help me to create a specific matrix B from an array A as following? I need a better method which spend less time to create this matrix. Thanks.
A=[1 2 3 4 5 6 7] B=[1 2 3 4 5; 2 3 4 5 6; 3 4 5 6 7];

Best Answer

A=[1 2 3 4 5 6 7]
m=5;
n=numel(A);
id=bsxfun(@plus,repmat(1:n,3,1),(0:2)');
id=id(:,1:m);
B=A(id)
Related Question