Delete rows from a matrix using for loop

Hello, I need delete the zero rows from a matrix using for loops/while, I try this:

Matrix = [1,1 ; 1,2 ; 0,0 ; 0,0 ; 3,1 ; 0,0];

LM =length(Matrix);

cont = 0;

for i = 1 : LM

if Matrix(i) == 0

cont = cont + 1;

end

end

Matrix_Aux = [];

for j = 1:LM

if Matrix(j) ~= 0

Matrix_Aux = [Matrix(j)];

end

end

I need get this:

Matrix_Aux = [1,1 ; 1,2 ; 3,1 ];

Any idea?

Answer 1

[David Hill]

Forcing to use for-loop

Matrix = [1,1 ; 1,2 ; 0,0 ; 0,0 ; 3,1 ; 0,0];
idx=[];
for k=1:size(Matrix,1)
    if all(Matrix(k,:)==0)
        idx=[idx,k];
    end
end
Matrix(idx,:)=[];

[Dominique]

Thanks. Good solution.

Answer 2

[Voss]

No loops are necessary:

Matrix = [1 1; 1 2; 0 0; 0 0; 3 1; 0 0]

Matrix = 6×2

1 1 1 2 0 0 0 0 3 1 0 0

Matrix(all(Matrix == 0,2),:) = []

Matrix = 3×2

1 1 1 2 3 1