Hi,
If I have a matrix like
1 2 3 4
5 6 7 8,
how can I repeat two rows as whole, to be like
1 2 3 4
5 6 7 8
1 2 3 4
5 6 7 8?
Since I have more two rows in a matrix and I need to repeat many times, I
wonder whether there is a convenient command to do so.
Thanks!
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