b=[1 2 3];A_b1=A-b([1 1 1],:) A_b1 = 0 2 4 1 3 5 2 4 6 A_b2=A-repmat(b,3,1) A_b2 = 0 2 4 1 3 5 2 4 6 A_b3=[A(:,1)-b(1),A(:,2)-b(2),A(:,3)-b(3)] A_b3 = 0 2 4 1 3 5 2 4 6 (责任编辑:泉水) |