topic Re: Specifying Series in Macro Do Loop in SAS Programming

Specifying Series in Macro Do Loop

DavidLie — Tue, 30 Jun 2020 07:50:12 GMT

Hi SAS Experts,

I just have a question on specifying series for do loops. Instead of the usual %do n=1 %to..., I would like to specify a series such that it will activate a certain set of numbers (in this case 1, 7,8,10...). But it does not work. Any ways out? 🙂

Thanks.

Best,
David

%let n_MSA=48;

%macro combineMSA(MSA);
%do n=1,7,8,10,11,17,19,23,27,28,29,35,36,38,40,44,46;

data data.diction_MSA&n.; set data.diction;
if MSA ne &n. then delete;
run;

%end;
%mend;
%combineMSA;

Re: Specifying Series in Macro Do Loop

Kurt_Bremser — Tue, 30 Jun 2020 08:17:06 GMT

Do this in your macro:

%local list i n;
%let list=1 7 8 10 11 17 19 23 27 28 29 35 36 38 40 44 46;
%do i = 1 %to %sysfunc(countw(&list.));
  %let n = %scan(&list.,&i.);
  /* your loop body */
%end;

Re: Specifying Series in Macro Do Loop

Jagadishkatam — Tue, 30 Jun 2020 08:17:14 GMT

Please try the call execute alternate to macro do loop

data have;
do n=1,7,8,10,11,17,19,23,27,28,29,35,36,38,40,44,46;
output;
end;
run;


data _null_;
call execute("data data.diction_MSA"||strip(put(n,best.))||"; set data.diction;if MSA ne "||strip(put(n,best.))||" then delete;run;");
run;

Re: Specifying Series in Macro Do Loop

Reeza — Tue, 30 Jun 2020 15:30:36 GMT

The Macro Appendix has examples of common macro usage, including one with a macro loop.

https://communities.sas.com/t5/SAS-Communities-Library/SAS-9-4-Macro-Language-Reference-Has-a-New-Appendix/ta-p/291716