Matlab - Ayuda en function me dice error

function beta=calibra(v,c)

n=500;

[i,j]=size(v);

B=ones(1,j);

k=1;

err=100;

LP(1)=0;

error=input('Ingrese Valor Error deseado en % :');

while err>error

    k=k+1;

   for u=1:i

   LP(k)=(sum(sum(v.*c)))/(sum(sum(v)));

   beta(k)=1/LP(k);

   O(u,1)=sum(sum(v,2));

   D(u)=sum(sum(v));

   end

   for u=1:i

   A(u,1)=1/sum(sum((B.*D.*exp(-beta(k)*c(1,:)))));

   end

   for u=1:i

      B(u)=1/sum(sum((A.*O.*exp(-beta(k)*c(:,1)))));

   end

    for j=1:j

for i=1:i

    u=i;

    p=j;

    v(i,j)=A(i)*O(i)*B(j)*D(j)*exp(-beta*c(i,j));

end

    end

    err=((LP(k)-LP(k-1))/LP(k))*100;

end

v(i,j)=A(i)*O(i)*B(j)*D(j)*exp(-beta*c(i,j));