BookmarkSubscribeRSS Feed
cmshaw91
Calcite | Level 5

Hello all,

 

My organization does not have IML, only base SAS. So I'm using a macro compute matrix multiplications. This macro works but I have another macro that does matrix multiplaction i number of times.  When I run the following macro it only gives me a one period ahead matrix when it should give 6. Any thoughts?

 

%macro loop (n=);
%do i = 2 %to &n.;
data _null_; i_minus_1= &i.-1; call symput( 'i_minus_1', i_minus_1); run;
%if &i.=2 %then %do;
    %mat_product (in_data1 = m1
    ,in_data2 = m1
    ,out_data = m&i. );
  %end;
  %else %do;
   %mat_product (in_data1 = m1 , in_data2 = m&i_minus_1., out_data= m&i.);
  %end;
%end;
%mend;

%loop (n=6);

 

 

1 REPLY 1
Ksharp
Super User
I would use DATA STEP to calculate ,not MACRO which would lost accuracy .

hackathon24-white-horiz.png

The 2025 SAS Hackathon Kicks Off on June 11!

Watch the live Hackathon Kickoff to get all the essential information about the SAS Hackathon—including how to join, how to participate, and expert tips for success.

YouTube LinkedIn

From The DO Loop
Want more? Visit our blog for more articles like these.
Discussion stats
  • 1 reply
  • 1437 views
  • 0 likes
  • 2 in conversation