Loop over names in SAS-IML?

Question

How can I read a SAS-Dataset with a name given as stem+suffix into IML? The stem is given as a SAS macro variable, the suffices I intend to use are in a string-vector in IML.

Answer 1

The easiest way I can think of to do this is to use some non-IML syntax. PROC SQL for example can generate macro variable lists.

%let stem=class_;
data class_s1 class_s2;
set sashelp.class;
run;

data suffices;
input suffix $;
datalines;
s1
s2
;;;;
run;

%macro use_suffix(suffix=);
use &stem.&suffix.;
read all into &stem.&suffix.;
print &stem.&suffix.;
%mend use_suffix;

proc sql;
select cats('%use_suffix(suffix=',suffix,')') into :suffixlist separated by ' ' from suffices;
quit;

proc iml;
&suffixlist;
quit;