Getting error " 'ga' requires Global Optimization Toolbox'' while running the global optimization command for a stalagmite function.

Question

chaitanya vallabh 2021-11-23

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1593699-getting-error-ga-requires-global-optimization-toolbox-while-running-the-global-optimization-c

评论： Steven Lord 2021-11-23

clear all
close all
clc
%inputs
x = linspace(0,0.6,150);
y = linspace(0,0.6,150);
[xx, yy] = meshgrid(x,y);
for i = 1:length(xx)
    for j = 1:length(yy)
        vector(1) = xx(i,j);
        vector(2) = yy(i,j);
        f(i,j)= stalagmite(vector);
    end
end
num_case = 50;
tic
%study_1 - Satistical behaviour 
for i = 1:num_case
    [inputs, fopt(i)] = ga(@stalagmite, 2);
    xopt(i) = inputs(1);
    yopt(i) = inputs(2);
end
study1_time = toc
figure(1)
subplot(2,1,1)
hold on
surfc(x,y,f)
shading interp
plot3(xopt,yopt,fopt,'marker','o','markersize',5,'markerfacecolor','r')
title('unbound inputs')
subplot(2,1,2)
plot(fopt)
xlabel('iteations')
ylabel('No of functions')

when i run this code i am getting the error as 'ga' requires Global Optimization Toolbox.

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Answer 1

Walter Roberson 2021-11-23

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1593699-getting-error-ga-requires-global-optimization-toolbox-while-running-the-global-optimization-c#answer_838269

The message is correct. The function ga() is part of the Global Optimization Toolbox. You need to have the Global Optimization Toolbox installed and licensed in order to use Mathwork's ga() function.

ga() is not part of basic MATLAB.

[If I recall correctly, the Global Optimization Toolbox requires that you have the Optimization Toolbox installed and licensed.)