Date:         Sun, 24 Jun 2007 23:28:39 -0700
Reply-To:     David L Cassell <davidlcassell@MSN.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         David L Cassell <davidlcassell@MSN.COM>
Subject:      Re: evaluating char var in data step
In-Reply-To:  <200706222056.l5MJcMUo021832@mailgw.cc.uga.edu>
Content-Type: text/plain; format=flowed

cmiller1@COQIO.SDPS.ORG wrote:
>
>The macro below prints out the colors to the log.
>Is it possible to do the same from a data step?
>What I need apparently is some sort of evaluation
>function that returns the value of a character
>variable????
>Thanks much.
>
>
>%let c1=blue;
>%let c2=green;
>%let c3=fuschia;
>%let c4=chartruese;
>%let c5=paisley;
>
>
>%macro goo;
>  %do k=1 %to 5;
>   %put &&&c&k.;
>  %end;
>%mend goo;
>%goo
>
>
>
>This fails with the error message shown.
>data zoo;
>  n=1;
>  do while(n<6);
>    put n=;
>    x = "c" || left(n);
>    put &x;
>    n+1;
>  end;
>run;
>
>290        put &x;
>                -
>                22
>WARNING: Apparent symbolic reference X not resolved.
>ERROR 22-322: Expecting a name.
>
>I am thinking there must be something like:
>    put &value_of(x);
>??????????????

What are you *really* trying to do?

If you explain what your 'big picture' is, someone here can probably
give you a more informed answer.  Right now it looks like you're
over-using macro variables, so it's hard to give you good advice.

HTH,
David
--
David L. Cassell
mathematical statistician
Design Pathways
3115 NW Norwood Pl.
Corvallis OR 97330

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