看看这个可行data a;w=0.1;do n=1 to 50;do m=1 to 50;do x=0.1 to 5 by w;y=probf(x+w,n,m)-probf(x,n,m);output;end;end;end;proc sort;by x m n;run;proc gplot;plot y*x/overlay ctext=blue nofr;symbol i=spline color=red width=8;run;
data a; w=0.1; do n=1 to 50; do m=1 to 50; do x=0.1 to 5 by w; y=probf(x+w,n,m)-probf(x,n,m); output;end;end;end; proc sort;by x m n;run; proc gplot; plot y*x/overlay ctext=blue nofr; symbol i=spline color=red width=8; run;