Tell the what is "I" represents and explain by seeing my code?

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Matlab111 2014-9-10

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评论： Matlab111 2014-9-10

I need to know the what "I" represents in this program and how they are getting that value explain me clearly please... in program ("[fmin,I]=min(Fitness);") this part

 function [best,fmin]=bat_algorithm(para)  
if nargin<1,  para=[5 2 0.5 0.5];  end
n=para(1);
d=10; 
Lb=-2*ones(1,d);
Ub=2*ones(1,d);
for i=1:n,
Sol(i,:)=Lb+(Ub-Lb).*rand(1,d);
Sol
Fitness(i)=Fun(Sol(i,:));
Fitness
end
[fmin,I]=min(Fitness);
[fmin,I]
I
best=Sol(I,:);
I
best
function z=Fun(u)
% Sphere function with fmin=0 at (0,0,...,0)
z=sum(u.^2);
z

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Answer 1

Andreas Goser 2014-9-10

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在 MATLAB Online 中打开

Quoting the documentation for the command MIN:

[C,I] = min(...) finds the indices of the minimum values of A, and returns them in output vector I. If there are several identical minimum values, the index of the first one found is returned.

So you get an index. Example code