这也是网上找的。是不是这样就可以使用。只改上面的信息。谢谢各位

%macro winsor(dsetin=repr12, dsetout=repr13, byvar=stkcd year, vars=tacc sale ppe, type=winsor, pctl=1 99);
%if &dsetout = %then %let dsetout = &dsetin;
   
%let varL=;
%let varH=;
%let xn=1;
%do %until ( %scan(&vars,&xn)= );
    %let token = %scan(&vars,&xn);
    %let varL = &varL &token.L;
    %let varH = &varH &token.H;
    %let xn=%EVAL(&xn + 1);
%end;
%let xn=%eval(&xn-1);
data xtemp;
    set &dsetin;
    run;
%if &byvar = none %then %do;
    data xtemp;
        set xtemp;
        xbyvar = 1;
        run;
    %let byvar = xbyvar;
%end;
proc sort data = xtemp;
    by &byvar;
    run;
proc univariate data = xtemp noprint;
    by &byvar;
    var &vars;
    output out = xtemp_pctl PCTLPTS = &pctl PCTLPRE = &vars PCTLNAME = L H;
    run;
data &dsetout;
    merge xtemp xtemp_pctl;
    by &byvar;
    array trimvars{&xn} &vars;
    array trimvarl{&xn} &varL;
    array trimvarh{&xn} &varH;
    do xi = 1 to dim(trimvars);
        %if &type = winsor %then %do;
            if not missing(trimvars{xi}) then do;
              if (trimvars{xi} < trimvarl{xi}) then trimvars{xi} = trimvarl{xi};
              if (trimvars{xi} > trimvarh{xi}) then trimvars{xi} = trimvarh{xi};
            end;
        %end;
        %else %do;
            if not missing(trimvars{xi}) then do;
              if (trimvars{xi} < trimvarl{xi}) then delete;
              if (trimvars{xi} > trimvarh{xi}) then delete;
            end;
        %end;
    end;
    drop &varL &varH xbyvar xi;
    run;
%mend winsor;
proc reg data=repr12;
model tacc=sale ppe;
run;
data repr13;
set repr12;
if year=1998 then delete;
run;
proc reg data=repr13;
model tacc=sale ppe;
run;