how to do this operation on matrix ?

i want a function to do this

 matrix = [{1 0 1  ;  { 1 1 0   ; { 0 1 0
            0 1 1       0 0 1       1 1 0
            1 1 1}      0 0 0 }     0 1 1 } ]

and use this function to calculate the sum of ones in each matrix like this

Val = [ 7 , 3 , 5]

then i want to sort Val like this

 val = [ 3 , 5 ,7]

after that i want to select the matrix which have the value 3

• note that the matrix will be generate randomly so use the matrix {2} is not acceptable

i want when i call min(val) the function get back the

                                                        [ 1 1 0
                                                          0 0 1
                                                          0 0 0 ]

Answer 1

[Walter Roberson]

Val = cellfun(@nnz, matrix);
[val, valorder] = sort(Val);
matrix(valorder(val == 3))

To have min(val) return an element of matrix, you are going to have to write your own object oriented class with rather odd properties.

By the way, have you considered,

Val = cellfun(@nnz, matrix);
[~, idx] = min(Val);
matrix{idx}