extracting the nth multiple rows of a large matrix to create a submatrix

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MIRABEL ACQUAH
MIRABEL ACQUAH 2018-12-5
评论： Stephen23 2022-4-20
Hi. Please i have a large matrix a=(1290 x 2) and i want to extract rows in multiple of 5 to create a new matrix. For example, a new matrix x, should be made of, the 5th row,10th row,15th row and so on, of matrix a. Please help me, I am new to MATLAB. Thanks

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madhan ravi
madhan ravi 2018-12-5
编辑：madhan ravi 2018-12-5
Simpler and easier:
x = a(5:5:end,:) % edited after all the comments
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Image Analyst
Image Analyst 2018-12-5
And (should be obvious, but evidently she's a beginner), to create the x she asked for:
x = a(5:5:end,:)

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Kevin Chng
Kevin Chng 2018-12-5
try, let say a is your matrix(1290x2)
a(1:5:1290,:)

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