pre allocating vector for loop

Can any one tell how to pre allocate c1?

thanks

for ii = 1:length(a11);

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

end

Answer 1

[madhan ravi]

c1 = cell(numel(a11),1); % before loop use numel instead of length

c1{ii} = ... inside loop

[Oday Shahadh]

c1 = cell(numel(a11),1);

[madhan ravi]

I don’t see the difference?

[Oday Shahadh]

Sorry what is hapening here?

I just commented " Madhani you are professional as usual'

[Oday Shahadh]

Then Madhani how can I switch all these cell arrays to ( n,3) matrix

[Oday Shahadh]

cell2mat