matrix row extraction help

2013 3 13
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hi there, i have a very simple question. how do i extract certain rows from a matrix. for example say i have a matrix nxm and i want to extract every 7th row from that matrix. how do i do that? thanks in advance. SN

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Andrei Bobrov
Andrei Bobrov 2013-3-13
编辑：Andrei Bobrov 2013-3-13

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x = randi(150,40,10); % your matrix
out = x(7:7:end,:);

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