Null matrix removal in the the output of the structure answer

A(1).f1=[1 2 3 4]'; A(2).f2=[3 4 5 6]'; A(3).f3=[5 3 2 1]'; A(4).f4=[7 8 2 4]';

A(1).avg=A(1).f1+A(2).f2+A(3).f3+A(4).f4;

After above operation I have seen,

>> A.avg

ans =

    16
    17
    12
    15

ans =

     []

ans =

     []

ans =

     []

I dont want these null matrix in the result.. I need just

>> A.avg

ans =

    16
    17
    12
    15

What I have to do ?

Answer 1

[Doug Eastman]

It might be helpful to understand a little bit about what you are trying to do because there may be a more efficient way to do this, but to answer your question directly you can simply use:

[A.avg]

This will combine all the outputs into one array, since only one is non-empty that's what you get.

Answer 2

[Walter Roberson]

As you know you have only defined A.avg for the first structure array element, index it directly: A(1).avg