In an assignment A(I) = B, the number of elements in B and I must be the same ERROR

Hi everyone,I keep get this error and I don't know what is it; I will be grateful for any suggestion.

error occurs in Ke(j)=bar3e(Ex(i,:)... Line.

    for j=1:lc
        f=f(:,j);
    for i=1:ne
        K=zeros(length(f),lc);
        Ke(j)=bar3e(Ex(i,:),Ey(i,:),Ez(i,:),[E Ep(i,1)]);
        K(j)=assem(Edof(i,:),K,Ke);
    end
    end
  -----------------------------------------------------------
  function [Ke]=bar3e(ex,ey,ez,ep)
    E=ep(1);  A=ep(2); 

    b=[ ex(2)-ex(1); ey(2)-ey(1); ez(2)-ez(1) ];
    L=sqrt(b'*b);

    Kle=E*A/L*[1 -1;-1  1];

    n=b'/L;   G=[   n   zeros(size(n)); zeros(size(n))   n   ]; 

    Ke=G'*Kle*G;

Answer 1

[Matt J]

Make sure that bar3e returns a scalar. If it doesn't it should be obvious why you can't asssign it to scalar location Ke(j).