matrix matching w.r.t row

matrix_1=
  0    0    0    1    2    3
  2    0    0    4    5    6
  4    0    0    7    8    9
  6    0    0   10   11   12
  7   59   44   13   14   15
  8   59   44   15   16   17
  8    0    0   18   19   20
 10    0    0   20   21   22
matrix_2=
  0    0    0
  2    0    0
  4    0    0
  6    0    0
  8    0    0
 10    0    0

I need to remove all rows of matrix_1 which don't match matrix_2 rows as follows;

merged_matrix=
  0    0    0    1    2    3
  2    0    0    4    5    6
  4    0    0    7    8    9
  6    0    0   10   11   12
  8    0    0   18   19   20
 10    0    0   20   21   22

[7 59 44;8 59 44]

these parts of the matrix_1 don't matched with the rows of matrix_2. Then they need to be removed as above.

Answer 1

[Stephen23]

You can use ismember with the rows option:

>> idx = ismember(matrix_1(:,1:3),matrix_2(:,1:3),'rows');
>> out = matrix_1(idx,:)
out =
    0    0    0    1    2    3
    2    0    0    4    5    6
    4    0    0    7    8    9
    6    0    0   10   11   12
    8    0    0   18   19   20
   10    0    0   20   21   22