Index exceeds the number of array elements (1).

clear
close all
% Problem Statement
Npar = 17;
VarLow=0.1;
VarHigh = 35;
%BBBC parameters
N=50;       %number of candidates
MaxIter=100;  %number of iterations
% initialize a random value as best value
XBest = rand(1,Npar).* (VarHigh - VarLow) + VarLow;
FBest=fitnessFunc(XBest);
GB=FBest;
t = cputime;
%intialize solutions and memory
X = zeros(N, Npar);
F = zeros(N, 1);
for ii = 1:N
    X(ii,:) = rand(1,Npar).* (VarHigh - VarLow) + VarLow;
    
    % calculate the fitness of solutions
    F(ii) = fitnessFunc(X(ii,:));
end
%Main Loop
for it=1:MaxIter
    %Find the centre of mass 
    %-----------------------
    %numerator term
    num=zeros(1,Npar);
    for ii=1:N
        for jj=1:Npar
            num(jj)=num(jj)+(X(ii,jj)/F(ii));
        end
    end
    %denominator term
    den=sum(1./F);
    %centre of mass
    Xc=num/den; 
    %generate new solutions
    %----------------------
    for ii=1:N
        %new solution from centre of mass
        for jj=2:Npar      
            New=X(ii,:);
            New(jj)=Xc(jj)+((VarHigh(jj)*rand)/it^2);
            
        end
        %boundary constraints
        New=limiter(New,VarHigh,VarLow);
        %new fitness
        newFit=fitnessFunc(New);
        %check whether the solution is better than previous solution
        if newFit<F(ii)
            X(ii,:)=New;
            F(ii)=newFit;
            if F(ii)<FBest
                XBest=X(ii,:);
                FBest=F(ii);   
            end
        end
    end
    % store the best value in each iteration
    GB=[GB FBest];
end
%Main Loop
for it=1:MaxIter
    %Find the centre of mass 
    %-----------------------
    %numerator term
    num=zeros(1,Npar);
    for ii=1:N
        for jj=1:Npar
            num(jj)=num(jj)+(X(ii,jj)/F(ii));
        end
    end
    %denominator term
    den=sum(1./F);
    %centre of mass
    Xc=num/den; 
    %generate new solutions
    %----------------------
    for ii=1:N
        %new solution from centre of mass
        for jj=2:Npar      
            New=X(ii,:);
            New(jj)=Xc(jj)+((VarHigh(jj)*rand)/it^2);
            
        end
       

Hi please can someone help me the code runs perfectly on my computer, but when transferred to another and ran, it gives the error message (index exceeds the number of array elements (1))? And error in this line New(jj)=Xc(jj)+((VarHigh(jj)*rand)/it^2);

Answer 1

[Alex Mcaulley]

VarHigh is a constant and you are using it as an array...

VarHigh(2) %Throws an error