MATLAB: How to assign the value for Integer variable indices in GA toolbox

How to assign the value for Integer variable indices in GA toolbox?

Best Answer

Hi,

consider you have 8 variables x(1)...x(8). The following code makes x(1), x(2), x(4) and x(6) integer constrained in range from 0 to 1:

fun = @(x)...
nvars = 8;
A = [];
b = [];
lb = [0 0 3.5 0 3.5 0 2.75 4.2];
ub = [1 1 15 1 23 1 42 666.666];
nonlincon = @(x)...
Intcon = [1, 2, 4, 6];
res = ga(fun, nvars, A, b, [], [], lb, ub, nonlincon, Intcon)

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MATLAB: Three inequality constraints for multi-objective genetic algorithm

These are linear constraints, so you should not use a nonlinear constraint function (which has errors in signs in any case: you have to ensure that the inequalities all go the correct way). Try this instead:

A = [1/6 1
    1/2 1
    5 1];
b = [6.5;7.5;30];
[x,fval] = gamultiobj(ObjectiveFunction,nvars,A,b);

Alan Weiss

MATLAB mathematical toolbox documentation

MATLAB: Not enough input arguments

sol = ga(@fun, nvars, [], [], [], [], lb, ub, [], intcon);

Best Answer

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MATLAB: Three inequality constraints for multi-objective genetic algorithm

MATLAB: Not enough input arguments

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