关于转置的问题

1. %macro temp;
   
2. data want;
   
3.   set test(keep=ID r1c1 r1c2 r1c3 rename=(r1c1 = c1 r1c2 = c2 r1c3 = c3))
   
4.     %do i = 2 %to 3;
   
5.       test(keep=ID r&i.c1 r&i.c2 r&i.c3 rename=(r&i.c1 = c1 r&i.c2 = c2 r&i.c3 = c3))
   
6.         %end;
   
7. ;run;
   
8. %mend;%temp;

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