Question

请教SAS高手一个数据步的问题（Do循环）,

Answer 1

data s;

do id=1 to 99;

do j=1 to id;

ran=(248-((j-1)*2))+(24.8-((j-1)*0.2))*rannor(j);

output;

end;

end;

run;

再套一个循环就好了,

宏程序的循环里面,id是作为宏变量~所以不会显示在数据集里面.