Index exceeds array bounds.

Question

Bushra Mumtaz 2019-5-3

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/460114-index-exceeds-array-bounds

评论： Roy Kadesh 2019-5-3

在 MATLAB Online 中打开

Kindly help ... i m new in matlab ..can't understand the error

Error in clone_mut_selection (line 12)

g = (randn./beta) .* exp(-fitin(i));

function [C] = clone_mut_selection(Ab,Nc,beta,fitin,xmin,xmax,ymin,ymax,f)
% C   -> matrix of clones 
% g   -> vector with Gaussian mutation 
% Ab  -> matrix of antibodies 
% N   -> cardinality of Ab 
% Nc  -> number of clones for each candidate 
[N,L] = size(Ab); 
C = []; 
for i=1:N
   vones = ones(N,1); 
   Cc = vones * Ab(i,:); 
   % g = (randn(Nc,L)./beta) .* exp(-beta.*fitin(i)); 
   g = (randn(N,L)./beta) .* exp(-fitin(i)); 
   g(1,:) = zeros(1,L);	% Keep one previous individual for each clone unmutated 
   c = Cc + g; 
   % Keeps all elements of the population within the allowed bounds 
   Ixmin = find(c(:,1) < xmin); Ixmax = find(c(:,1) > xmax); 
   %Iymin = find(c(:,2) < ymin); Iymax = find(c(:,2) > ymax); 
   if ~isempty(Ixmin) 
      c(Ixmin,1) = Cc(length(Ixmin),1); 
   end
   if ~isempty(Ixmax) 
      c(Ixmax,1) = Cc(length(Ixmax),1); 
   end
%    if ~isempty(Iymin)
%       c(Iymin,2) = Cc(length(Iymin),2); 
%    end
%    if ~isempty(Iymax) 
%       c(Iymax,2) = Cc(length(Iymax),2); 
%    end 
   x = c(:,1); y = c(:,2);
  % fit = eval(f); 
   fit = (fitnessfunction(Ab,N)); 
   [out,I] = max(fit); 
   C = [C;c(I,:)];  % C contains only the best individuals of each clone 
end

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Rik 2019-5-3

This time I edited your question for you. Next time, please use the tools explained on this page to make your question more readable.

Bushra Mumtaz 2019-5-3

编辑：Bushra Mumtaz 2019-5-3

Thanks Rik

and full error is Index exceeds array bounds.

Error in clone_mut_selection (line 14)

g = (randn(N,L)./beta) .* exp(-fitin(i));

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Answer 1

Roy Kadesh 2019-5-3

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/460114-index-exceeds-array-bounds#answer_373508

在 MATLAB Online 中打开

Then your loop variable is bigger than fitin. You should make sure that this is not the case.

function [C] = clone_mut_selection(Ab,Nc,beta,fitin,xmin,xmax,ymin,ymax,f)
% C   -> matrix of clones 
% g   -> vector with Gaussian mutation 
% Ab  -> matrix of antibodies 
% N   -> cardinality of Ab 
% Nc  -> number of clones for each candidate 
[N,L] = size(Ab); 
C = [];
if N>numel(fitin)
    error('fitin is not big enough')
end
for i=1:N

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Bushra Mumtaz 2019-5-3

I m doing feature selection using ainet n then fiding accuracy with SVM classifier...Can I have your email id so that I sent you my complete code may b then I get some help

Roy Kadesh 2019-5-3

You should be able to attach your m-files to the question or to a comment. I don't have any experience with machine learning, so I don't know if I can help you. Your entire function doesn't really make sense to me, because you didn't document all inputs. I don't know the norma function, and why you overwrote the function fit with a variable. You also forgot the ymin and ymax inputs and f (which is stored in ymin) is unused.

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