我也遇到了同样的错误，哪位朋友请帮帮忙，非常感谢！
74 proc iml;
NOTE: IML Ready
75 use total;
76 show contents;
77 read all into wqxishu;
78 row=wqxishu[,+];
79 col=wqxishu[+,];
80 ave=wqxishu[:];
81 effect=j(42,1,0);
82 feel=j(1,42,0);
83 effect=row/ave;
84 feel=col/ave;
85 print row col ave effct feel;
ERROR: Matrix EFFCT has not been set to a value.
81和82 那两行没有也出现这个错误，一直没找出原因，真的没有办法了
