How to record the function value for each iteration with using fmincon function.

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IBRAHIM BOZTAS
IBRAHIM BOZTAS 2021-11-22
编辑： Alan Weiss 2021-11-23
clc, clear all
%Inıtial Guess
x0=[1,6];
%%
%Lower and upper bounds
LB=[-inf];
UB=[10];
%%
%fmincon function
[x,fval]=fmincon(@objfun,x0,[],[],[],[],LB,UB,@confun,[]);
%%
%Constraint Function
function [c,ceq]=confun(x)
%inequality constraints
c=[x(1)+x(2)-5];
%equality constraints
ceq=[];
end
%%
%Object Function
function [f]=objfun(x)
f=(x(1)^2-5*x(2));
end
  4 个评论
显示 2更早的评论
Walter Roberson
Walter Roberson 2021-11-23
Have you considered using the option for 'display', 'iter' ?
Have you considered using the option for 'plotfcn' so that the values are plotted during the calculation?
Alan Weiss
Alan Weiss 2021-11-23
编辑：Alan Weiss 2021-11-23
You might want to give 2-D bounds. You have a 2-D variable, but give bounds only on the first component.
These examples might also be of interest: Example of a Nested Output Function (uses base MATLAB) or for fmincon see Output Functions for Optimization Toolbox™.
Alan Weiss
MATLAB mathematical toolbox documentation

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