SAS Macro : A Dynamic %Do Loop

Suppose you need to pass a variable in loop based on the input defined in a macro.
%macro report (input=, var = , class=);
%let n=%sysfunc(countw(&var));
%do i=1 %to &n;
%let val = %scan(&var,&i);
proc means data = &input noprint nway;
class &class;
vars &val;
output out=out&i mean= median= / autoname;
run;
%end;
%mend;

options mprint;
%report(input= test, var = b c, class=a);

When you execute the above sas program, it generates the following statements :

proc means data = &input noprint nway;
class a;
vars b;
output out=out1 mean= median= / autoname;
run;

proc means data = &input noprint nway;
class a;
vars c;
output out=out2 mean= median= / autoname;
run;
Spread the Word!
Share
Related Posts
About Author:

Deepanshu founded ListenData with a simple objective - Make analytics easy to understand and follow. He has over 10 years of experience in data science. During his tenure, he has worked with global clients in various domains like Banking, Insurance, Private Equity, Telecom and Human Resource.

2 Responses to "SAS Macro : A Dynamic %Do Loop"
  1. Hi deepanshu

    What does sysfunc do????..does it convert into character value??

    ReplyDelete
    Replies
    1. Sysfunc is used to apply functions within macro. You can use all functions of data steps by using sysfunc

      Delete

Next → ← Prev

Looks like you are using an ad blocker!

To continue reading you need to turnoff adblocker and refresh the page. We rely on advertising to help fund our site. Please whitelist us if you enjoy our content.