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

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chaitanya vallabh
chaitanya vallabh 2021-11-23
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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回答（1 个）

Walter Roberson
Walter Roberson 2021-11-23
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.)

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