MATLAB: Pre allocating vector for loop

pre-allocating

Can any one tell how to pre allocate c1?

thanks

for ii = 1:length(a11);

c1=cross(L1(1,:),a11(ii,:));

end

Best Answer

c1 = cell(numel(a11),1); % before loop use numel instead of length
c1{ii} = ... inside loop

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result = cell2mat(c1(:))';

MATLAB: Pre allocating triple loops

n = numel(L);
c = cell(n,n,45);
for ii = 1:n
    for jj = 1:n
        for kk = 1:45        
            c{ii,jj,kk} = cross(L1(ii,:),a{jj}(kk,:));
        end
    end
 end

Best Answer

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