Why does the QUADPROG function not display the iterations?

I am using the QUADPROG function, and I want to see the iterations. I use the OPTIMSET function to set the "Display" option to "iter":

H = [1 -1; -1 2] 

f = [-2; -6]

A = [1 1; -1 2; 2 1]

b = [2; 2; 3]

lb = zeros(2,1)

options=optimset('quadprog');

options=optimset(options,'Display','iter');

[x,fval,exitflag,output,lambda] = quadprog(H,f,A,b,[],[],lb,[],[],options)

However, I do not see the iterations when I run my code.

Answer 1

[MathWorks Support Team]

Output from each iteration using the "Display" option with the OPTIMSET function is not available for QUADPROG.

This is specified in the "Limitations" section of the QUADPROG documentation, which can be accessed by typing "doc quadprog" at the MATLAB command prompt.