Options in Genetic Algorithm don't work

When I try to run this code: options = optimoptions('ga','CrossoverFcn',@mycrossover); Matlab gives me this Error: Error using optimoptions (line 124) Invalid solver specified. Provide a solver name or handle (such as 'fmincon' or @fminunc). Type DOC OPTIMOPTIONS for a list of solvers.

I have no idea what that means. Please help. How do I set options parameters?

Answer 1

[Ahmad Rizqullah Abdul Malek]

I got this exact error too running someone else's code. The code could finally run after I installed "Global Optimization Toolbox" as an add-on for Matlab.

Go on the "Apps" tab on Matlab > "Get More Apps" > Search for "Global Optimization Toolbox" (make sure you Clear Filter first) > Install it

Run the code and it should work aye.

[Shresth Somya]

Thanks. It worked for me.

[rwan abdallah]

Hello, the toolbox is already installed, however , I'm still getting the same error

Answer 2

[Suraj Mankulangara]

Hello Luigi

The optimoptions() function is part of the Optimization Toolbox, which is different from the Global Optimization Toolbox, (which provides the genetic algorithm solver) in MATLAB (you can refer to the top left corner in the doc links below to see which toolbox a function belongs to):

https://www.mathworks.com/help/gads/genetic-algorithm.html

https://www.mathworks.com/help/optim/ug/optimtool.html

It is likely that this error occurs because you don't have either of the toolboxes installed.

To check which toolboxes are installed in your MATLAB, type

ver

at the MATLAB command window.

Answer 3

[Israel Vargas-Cruz]

Error using optimoptions (line 124)

Invalid solver specified. Provide a solver name or handle (such as 'fmincon' or @fminunc).

Type DOC OPTIMOPTIONS for a list of solvers.

Error in Genetic_Optimization (line 6)

options =

optimoptions('ga','PopulationSize',100,'Display','iter','UseParallel',true,'MaxStallGenerations',10,'PlotFcn',

@gaplotbestf);

Answer 4

[Kevy Pontes]

Hello,

I've got the same error for Genetic algorithm [Error: Error using optimoptions (line 124) Invalid solver specified. Provide a solver name or handle (such as 'fmincon' or @fminunc). Type DOC OPTIMOPTIONS for a list of solvers.] with the following toolboxes installed:

MATLAB Version 8.5 (R2015a)

Simulink Version 8.5 (R2015a)

Control System Toolbox Version 9.9 (R2015a)

Data Acquisition Toolbox Version 3.7 (R2015a)

Fixed-Point Designer Version 5.0 (R2015a)

Fuzzy Logic Toolbox Version 2.2.21 (R2015a)

Global Optimization Toolbox Version 3.3.1 (R2015a)

Image Acquisition Toolbox Version 4.9 (R2015a)

Image Processing Toolbox Version 9.2 (R2015a)

Instrument Control Toolbox Version 3.7 (R2015a)

Neural Network Toolbox Version 8.3 (R2015a)

Optimization Toolbox Version 7.2 (R2015a)

Partial Differential Equation Toolbox Version 2.0 (R2015a)

Signal Processing Toolbox Version 7.0 (R2015a)

SimPowerSystems Version 6.3 (R2015a)

Simscape Version 3.13 (R2015a)

Statistics and Machine Learning Toolbox Version 10.0 (R2015a)

Symbolic Math Toolbox Version 6.2 (R2015a)

System Identification Toolbox Version 9.2 (R2015a)

Wavelet Toolbox Version 4.14.1 (R2015a)

Any guesses???

Thanks

[Alan Weiss]

According to the release notes, optimoptions was introduced to Global Optimization Toolbox solvers in R2016a.

Alan Weiss

MATLAB mathematical toolbox documentation

[Kevy Pontes]

Thanks, Alan.

It worked with gaoptimset.

Regards

[NN]

Hi Kevy,

Please look at below code and suggest how i can modify it

options = optimoptions("ga",prob.optimoptions,"Display","iter");

[values,fval,exitflag] = solve(prob,"Solver","ga","Options",options)

i am getting the error

The value of 'Solver' is invalid. 'ga' is not a valid solver.