我想要达到以下目标:
data train_Sex(keep=Name Sex) train_Age(keep=Name Age) train_Height(keep=Name Height) train_Weight(keep=Name Height);
set sashelp.class;
run;
使用带有变量列表的宏程序。 据我所知:
* Build macro program;
%macro build_sets(var_list);
%let nwords = %sysfunc(countw(&var_list));
%do i=1 %to &nwords;
call symput("variable", %scan(&var_list, i));
data train_&variable(keep=Name &variable);
set sashelp.class;
run;
%end;
%mend;
* Run it;
%let var_list = Sex Age Height Weight;
%build_sets(&var_list);
但是我缺乏如何动态更改“变量”变量的知识。
谢谢!
类似的问题:
1。SAS dynamically declaring macro variable 2. Using a dynamic macro variable in a call symput statement 3. Dynamic macro variable access SAS
答案 0 :(得分:1)
你很近。下面的东西应该为您工作。调用symput是datastep的一部分,用于从dvariables创建宏变量,因此就产生了问题。
%macro build_sets(var_list);
;
%do i=1 %to %sysfunc(countw(&var_list));
%let variable= %scan(&var_list, &i));
data train_&variable(keep=Name &variable);
set sashelp.class;
run;
%end;
%mend;
* Run it;
%let var_list = Sex Age Height Weight;
%build_sets(&var_list);