Question

How to create a SAS macro with arrays?

Asked by: M3hcSS

I am looking for a way to loop through 10 macro variables to create 10 separate datasets (first part ) and then within each dataset to loop for &MXCNT(created earlier) number of variables to calculate the differences between consecutive variables (second part).

The below codes shows the first part works, but in the second part blows up when trying to create arrays within %macro.

The error occurs at ...
"&&var&j1-&&var&j&MAXCNT".

SAS doesn't seem to recognize if i=1, then "&&var&j1" refers to a variable called EMPLOY1. I was trying to use %array and %do_over in the open codes to help with correcting the problem (a paper talked about these macro arrays http://www2.sas.com/proceedings/sugi31/040-31.pdf). However, SAS doesn't seem to recognize these two commands. See below error message for the simple example used in the paper. %array and %do_over look handy, do you know why they are not working?

%let var1=EMPLOY;
%let var2=LEGAL;
%let var3=SOCIAL;
%let var4=SUBSTANCE;
%let var5=TECHNICAL;
%let var6=MENTAL;
%let var7=FAMILY;
%let var8=FINANCE;
%let var9=ASSAULT;
%let var10=MEDICAL;
%MACRO NEEDS;
%Do j = 1 %to 10;
      proc transpose data=NEEDSPOST0 out=&&var&j (drop=_name_ _label_) prefix=&&var&j;
        by DOC_ID;
        id count;
        var &&var&j;
        run;
      /*first part end*/
      data &&var&j;
      set &&var&j;
            array &&var&j{*} $15 &&var&j1-&&var&j&MAXCNT;
            array diff&&var&j{*} $15 diff&&var&j1-diff&&var&j&MXCNT;
            array negdiff&&var&j{*} $15
negdiff1&&var&j-negdiff&&var&j&MXCNT;
            array posdiff&&var&j{*} $15
posdiff1&&var&j-posdiff&&var&j&MXCNT;
            do i=1 to &MXCNT;
                  diff&&var&j{i} =&&var&j{i+1}-&&var&j{i};
                  if diff&&var&j{i}>0 then negdiff&&var&j{i}=1; else negdiff&&var&j{i}=0;
                  if i=1 then totnegdiff&&var&j=negdiff&&var&j{i};
                        else
totnegdiff&&var&j=totnegdiff&&var&j+negdiff&&var&j{i};
                  if diff&&var&j{i}<=0 and diff&&var&j{i}ne . then posdiff&&var&j{i}=1; else posdiff&&var&j{i}=0;
                  if i=1 then totposdiff&&var&j=posdiff&&var&j{i};
                        else
totposdiff&&var&j=totposdiff&&var&j+posdiff&&var&j{i};
                  drop i;
            end;
      run;
%END;
%MEND NEEDS;
 
 
 
140  %ARRAY(abc,VALUES=A B C);
     -
     180
WARNING: Apparent invocation of macro ARRAY not resolved.
 
ERROR 180-322: Statement is not valid or it is used out of proper order.
 
WARNING: Apparent invocation of macro ARRAY not resolved.
141  %ARRAY(def,VALUES=D E F);
     -
     180
 
ERROR 180-322: Statement is not valid or it is used out of proper order.
 
WARNING: Apparent invocation of macro DO_OVER not resolved.
142  Rename %DO_OVER(abc def,PHRASE=?abc=?def);
     ------
     180
 
ERROR 180-322: Statement is not valid or it is used out of proper order.

                                  
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Asked On
2008-04-29 at 12:59:36ID23363400
Tags

sas

,

macro

,

arrays

,

create

Topic

SAS

Participating Experts
1
Points
500
Comments
3

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Answers

 

Accepted Solution

by: bradanelsonPosted on 2008-04-29 at 13:11:25ID: 21465754

Rank: Guru

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Expert Comment

by: bradanelsonPosted on 2008-04-29 at 13:13:55ID: 21465775

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Expert Comment

by: M3hcSSPosted on 2008-05-01 at 08:37:03ID: 31453552

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