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Concatenating arrays [message #45374]

Sun, 04 September 2005 06:05

RPF
Messages: 2
Registered: September 2005

Junior Member

Hi all

I got a feeling this is a stupid question, but it's annoying the hell out of
me...
If I have a = [2 3] and i wish to repeat these two elements for say 1000
times so my final array is 2000 elements long is there a quick way? At the
moment im using a for loop with a = [a,a] and calculating the number of
loops required to get to the desired amount then trimming the edge off (but
i'll need to do this with quite large arrays). Also is there an easy way to
make an upper triangular matrix i.e. make all entries below the diagonal
zero ?

Thanks

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