过程 SGPLOT 没有找到：版本问题？？

shiyiming

本人使用sas9.1.3,运行之后出现如下
ERROR: 过程 SGPLOT 没有找到。
大侠指教sgplot运行版本是？？？
[code:2vvmdzul]title1 "Sales of Passenger Cars";

symbol1 i=spline v=dot;
axis2 label=(a=-90 r=90 "Vehicles and Parts" )
      order=(6000 to 24000 by 3000);

title1 "Sales of Passenger Cars";
proc sgplot data=sashelp.usecon;
   series x=date y=vehicles / markers;
   xaxis values=('1jan80'd to '1jan92'd by year);
   yaxis values=(6000 to 24000 by 3000);
   format date year4.;
run;
proc forecast data=sashelp.usecon interval=month
              method=winters seasons=month lead=12
              out=out outfull outresid outest=est;
   id date;
   var vehicles;
   where date >= '1jan80'd;
run;
proc print data=out (obs=20) noobs;
run;[/code:2vvmdzul]