Hi all; I have a problem to run R2016a example due to different Matlab version.

I used Matlab R2011a, when i try to implement Matlab example ( from R2016 Documentation)

http://www.mathworks.com/help/optim/ug/minimization-with-equality-constraints.html

I have problem when I try to execute the example and i get this messege

??? Undefined function or method 'optimoptions' for input arguments of type
'char'.

Error in ==> TestBrownfgh at 5
options =
optimoptions('fmincon','SpecifyObjectiveGradient',true,'HessianFcn','objective',...

which i suppose related to

options = optimoptions('fmincon','SpecifyObjectiveGradient',true,'HessianFcn','objective',...
    'Algorithm','trust-region-reflective');

since i did not get any help in 2011a Demos related to SpecifyObjectiveGradient. Kindly can any one suggest how i can modify optimoptions to be suitable for this problem. Regards

Answer 1

[Star Strider]

That does not appear to be an option in R2011a. See the documentation< for the R2011a vesion of fmincon to determine if it can do what you want.