楼上说错了,这风格,很明显是IBM的Rational Rose
Rose可以画
2
Visio 2007
data a(keep=x2);x0=0;x1=0;do i=1 to 1000;e_t=rannor(12345);x2=x1-0.5*x0+e_t;output;x0=x1;x1=x2;output;end;