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Create copies of each row of an array

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Thomas Hoyle
Thomas Hoyle 2016-11-30
编辑： Andrei Bobrov 2016-11-30
Is there a way to copy each row of an array one after another for example if I had
A =
1 2 3 4
5 6 7 8
how can I make it into
A =
1 2 3 4
1 2 3 4
5 6 7 8
5 6 7 8

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Andrei Bobrov
Andrei Bobrov 2016-11-30
编辑：Andrei Bobrov 2016-11-30
kron(A,[1;1])
or
repelem(A,2,1)

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