05-20-2012 10:39 AM
I use "retain" to make variables in order.
But I don't know how to do the following:
I have a SAS dataset like:
A1 A2 A3 ... A300 B1 B2 B3 ... B300 C1 C2 C3 ... C300;
I want to make it in the following order;
A1 B1 C1 A2 B2 C2 A3 B3 C3 ... A300 B300 C300;
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