matrix matching w.r.t row

Question

sermet OGUTCU 2016-6-21

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/291396-matrix-matching-w-r-t-row

编辑： Stephen23 2016-6-21

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

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

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

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Answer 1

Stephen23 2016-6-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/291396-matrix-matching-w-r-t-row#answer_226203

编辑：Stephen23 2016-6-21

在 MATLAB Online 中打开

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