array manipulation such as [ 1 2 5 7 3 .... ] --> [ 1 1 1 ... 2 2 2 ... 5 5 5 ... 7 7 7 ... 3 3 3 ... .... ].

Using

A = [ 1 2 5 7 3 .... ],

I would like to create

B = [ 1 1 1 ... 2 2 2 ... 5 5 5 ... 7 7 7 ... 3 3 3 ... .... ]

Can you please show me a way to do that? Thanks.

[per isakson]

What do the three dots between 1 1 1 and 2 2 2 stand for?

Answer 1

[Jan]

repelem(A, 3)

Answer 2

[michio]

A = [ 1 2 5 7 3];
tmp = repmat(A,[3,1]);
B = tmp(:)';