MATLAB: Make a column matrix with outputs of a for loop

matrix

I have a for loop and I want the outputs of each iteration to sit in a column matrix. for example i have the code below:
for i=1:5
 a=[1 2; i 3]
[P,Q]=eig(a);
end
for the first iteration Q(i=1)=[0.2679 0; 0 3.731], for second iteration I have Q(i=2)=[-0.2361 0; 0 4.2361] and so on. I want to construct a 10*1 column matrix in which all the outputs are after each other like this:
S=[0.2679 3.731 -0.2361 4.2361 ....]
but I really don't know how. it would be appreciated if u help me.

Best Answer

Use diag(Q) to obtain only the eigenvalues on the diagonal of Q, and then concatenate:
mat = [];
for i=1:5
    a=[1 2; i 3];
    [P,Q]=eig(a);
    mat = [mat; diag(Q)];
end
Related Question