MATLAB: Creating a special matrix

create a matrix

Hello all,

I want to create this matrix

A=[0 0 1 1 1;0 1 1 1 0;1 1 1 0 0]

How can I get ?

Thank you.

One way:

v = [0 0 1 1 1 ];
A = [v; circshift(v,[0 -1]); circshift(v,[0 -2])]

A = kron(eye(5),[1;1])+kron(diag(-ones(4,1),1),[1;1]);
out = A(1:5,:);

n = 1:5;
A = repmat([1,-1,0,0,0],5,1);
out = A(mod(repmat(n,5,1) - ceil(n(:)/2),5)*5 + n(:));

See if the approach in How to draw bar graph of different colors ? will do what you want.