Help please with MATLAB ga toolbox (Not enough input arguments)

Could someone please help me with this,

I am trying to minimize a 3 variable problem, and, keep getting this error in return,

"Not enough input arguments"

Number of variables = 3

Upper bounds = [80 6 2]

Lower bounds = [10 1 1]

Function used,

function y = pallab(x)

y = -0.59567+0.008793*x(1)+0.1025*x(2)+0.40967*x(3)-0.000266667*(x(1)*x(2))+0.0000*(x(1)*x(3))-0.013333*(x(2)*x(3))-0.0000504*(x(1)^2)-0.00683333*(x(2)^2)-0.106*(x(3)^2);

end

Thanks in advance

[Alan Weiss]

Please show us your ga call, including any options that you passed.

Alan Weiss

MATLAB mathematical toolbox documentation

[Pallab]

I hope this screenshot answers your queries. All options are at default at this point.

Answer 1

[Alan Weiss]

Try this command:

which -all pallab

Also try

type pallab

The reason I ask is that using exactly your stated function and using the Optimization app as you seem to be doing, I got no error.

Alan Weiss

MATLAB mathematical toolbox documentation

[Pallab]

I know, it works well for others. I posted the same on researchgate, and seemed to work for others. NOT JUST FOR ME.

I looked at the autogenerated codes,

THIS DOES NOT RUN,

function [x,fval,exitflag,output,population,score] = pallabga(nvars,lb,ub)

%%This is an auto generated MATLAB file from Optimization Tool.

%%Start with the default options

options = gaoptimset; %%Modify options setting

options = gaoptimset(options,'Display', 'off');

[x,fval,exitflag,output,population,score] = ...
ga(@pallab,nvars,[],[],[],[],lb,ub,[],[],options);

HOWEVER, THIS RUNS WELL,

function [x,fval,exitflag,output,population,score] = pallabgamultiobj(nvars,lb,ub)

%%This is an auto generated MATLAB file from Optimization Tool.

%%Start with the default options

options = gaoptimset;
%%Modify options setting

%options = gaoptimset(options,'CrossoverFcn', {  @crossoverintermediate [] });

options = gaoptimset(options,'Display', 'off');

[x,fval,exitflag,output,population,score] = ...
gamultiobj(@pallab,nvars,[],[],[],[],lb,ub,options);

So, the multiobj is working, not just the standalone ga. What do you think?

Answer 2

[Pallab]

It compiled finally.

I don't know, what was wrong with it. I cleared up the entire MATLAB directory, deleted everything in it. And started with a fresh script. And it suddenly started working.

I just don't know, why and how. M glad though.

[Walter Roberson]

If at one point you had a pallab that required more than one variable, it is possible it was still invoking that routine. If you change the function without using the Editor to change it, then you should use "clear pallab" to get rid of any old handles that might be around.

[Pallab]

Thanks a lot. Cheers.