I N T E R O F F I C E M E M O R A N D U M

Date: 15-Feb-1996 12:10pm EST From: Christopher Alan Strickland STRICKLA Dept: MOT&E Tel No: (407) 726-7351

TO: _WINS% ( _DDN[sas-l%marist.bitnet@uga.cc.uga. edu] )

Subject: Using Macro Variables as Arrays

I'm creating a macro variable array as follows:

data _null_; set target end=eof; call symput("vehnum"||put(_n_,.1),vehid); if eof then do; call symput ("vehtot",put(_n_,1.)); end; run;

This works great, gives me results like:

vehnum1=11 vehnum2=18 vehnum3=23 vehnum4=57

My problem occurs when trying to access this macro variable array inside of a datastep.

Here's a synopsis of what I'm doing (symput doesn't work, %let always changes);

data x; array veh(&vehtot); retain veh1 - veh&vehtot x;

if first.val then do; do i=1 to &vehtot; veh{i}=0; end; link xeq1; (Also tryed symput, and %let, hoped link wouldn't resolve %let, until called)

end;

do until (&x >= &vehtot or out=1); if veh{&x}=gpsveh then do; out=1; link xeq1; end; else do; if &&vehnum&x=gpsveh then do; veh{&x}=gpsveh; out=1; link xeq1; end; %let x=%eval(&x + 1) end; end;

return;

xeq1: %let x=1; return;

Basically, I'm wanted to loop through and looke at vehnum1, vehnum2, vehnum3, and vehnum4.

Any ideas, hints, suggestions.

+------------------------------------------+ | Chris Strickland | | http://www.teg.saic.com/mote/people.html | | strickla@js-jtf.af.mil | +------------------------------------------+