takespecific elements from matrix to build new one

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Abdulkareem
Abdulkareem 2014-3-12
编辑： Chris C 2014-3-12
hey everybody i have 40*10 matrix i want to build new one that contain the first 10 rows (1:10,:) and the third 10 rows (31:40,:) so the new matrix will contain 20*10 . thanks in advance.

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Chris C
Chris C 2014-3-12
编辑：Chris C 2014-3-12
If your original matrix is called A, then
B = [A(1:10,:); A(31:end,:)];

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