Joanne ,

Data one ; Set XXX ;

Do I = 1 to 2 ; Output ; End ;

Run ;

Toby Dunn

From: joanne <hsiehchu@MSU.EDU> Reply-To: joanne <hsiehchu@MSU.EDU> To: SAS-L@LISTSERV.UGA.EDU Subject: data array Date: Thu, 29 Jun 2006 13:19:45 -0400

Hello: a simple question about data arrangement. but, not knowing how to begin with. will appreciate for your any advice or input.

i have a dataset look like the following,

Obs ID X1 TIME X2 X3 X4 1 02 54 0 2 -0.67 -1.04 2 02 57 1 2 -0.27 -0.61 3 02 55 2 2 -0.57 -0.18 4 15 59 0 2 -0.17 -1.04 5 15 60 1 2 -0.10 0.07 6 15 61 2 2 -0.39 -0.81 7 16 56 0 1 0.11 0.87 8 16 55 1 1 -0.44 -0.37 9 16 55 2 1 0.06 -0.44 ...... if i'd like to extend the original data, and makes each ID regenerate its corresponding variables (like, X1, Time, X2, X3...) twice in each column,

Obs ID X1 TIME X2 X3 X4 1 02 54 0 2 -0.67 -1.04 2 02 57 1 2 -0.27 -0.61 3 02 55 2 2 -0.57 -0.18 4 02 54 0 2 -0.67 -1.04 5 02 57 1 2 -0.27 -0.61 6 02 55 2 2 -0.57 -0.18 7 15 59 0 2 -0.17 -1.04 8 15 60 1 2 -0.10 0.07 9 15 61 2 2 -0.39 -0.81 10 15 59 0 2 -0.17 -1.04 11 15 60 1 2 -0.10 0.07 12 15 61 2 2 -0.39 -0.81 ...... what should i do to make it? thanks in advance for your time & help.