Date:         Sun, 1 Feb 2004 09:55:51 -0800
Reply-To:     David9876 <david.langton@DSL.PIPEX.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         David9876 <david.langton@DSL.PIPEX.COM>
Organization: http://groups.google.com
Subject:      Re: A do-loop question
Content-Type: text/plain; charset=ISO-8859-1

Sorry - but thats just not allowed!

There is a clear boundary between data steps and proc steps - if you
need to repetatively call a procedure with differing statements, you
will need a macro to code the loops.  Something like this should help
(not tested but something along these lines...):

%macro repeat;
  %let aa = x1 x2 x3 x4 x5 x6;
  %let bb = y1 y2 y3 y4 y5;

  %do i=1 %to 5;
  %do j=1 %to 6;
  %do k=%eval(&j+1) %to 6;

    proc logistic;
      model %scan(&bb,&i) = %scan(&aa,&j) ( %scan(&aa,&k
%scan(&aa,j)*%scan(&aa,&k} );
    run;

  %end;
  %end;
  %end;
%mend;
%repeat;


jn_mao@YAHOO.COM (jn mao) wrote in message news:<20040201054258.23352.qmail@web20723.mail.yahoo.com>...
> Hi, SAS-L users,
>
> I need use a do-loop statement for a logistic model.
>
> I have several dependent variables need a logistic analysis by the same independent  variables. I want to use a do-loop statement to do it for saving my time , can SAS allow a do-loop inside of procedure? I tried several times, but the log always shown the syntax error. Could anyone give me some helps? Thanks a lot.
>
> Here is my code:
>
> array aa {6} x1 x2 x3 x4 x5 x6;
>
> array bb {5} y1 y2 y3 y4 y5;
>
> do i=1 to 5;
>
> do j=1 to 6;
>
> do k=j+1 to 6;
>
> proc logistic;
>
> model bb{i}=aa{j} aa{k} aa{j}*aa{k};
>
> output;
>
> end;
>
> end;
>
> end;
>
>
> run;
>
>
>
> ---------------------------------
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