take selected rows from given matrix

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JaeSung Choi
JaeSung Choi le 22 Nov 2017
Commenté : JaeSung Choi le 22 Nov 2017
How can i take selected rows from given matrix??
For instance, let A = rand(100) and i want to take 10th,20th,30th ----100th row from A
Without using 'for' ( since i have to do many times, speed is important ), deriving is possible?? Help me!

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Réponse acceptée

Andrei Bobrov
Andrei Bobrov le 22 Nov 2017
out = A(10:10:end,:);

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Birdman
Birdman le 22 Nov 2017
A(10:10:100,:)

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