System Options for Macros |
Specifies whether the results of resolving macro variable references
are written to the SAS log for debugging.
Valid in: |
Configuration file |
OPTIONS window |
OPTIONS statement |
SAS invocation |
|
Type: |
System option
|
Alias: |
SGEN | NOSGEN
|
Default: |
NOSYMBOLGEN
|
PROC OPTIONS GROUP= |
MACRO
|
|
LOGCONTROL
|
See Also: |
The SAS Log
|
- SYMBOLGEN
-
displays the results of resolving macro variable references.
This option is useful for debugging.
- NOSYMBOLGEN
-
does not display results of resolving macro variable references.
SYMBOLGEN displays the results in this form:
SYMBOLGEN: Macro variable name resolves to value
SYMBOLGEN also indicates when a double ampersand (&&
) resolves to
a single ampersand (&
).
In this example, SYMBOLGEN traces the resolution of macro variable references
when the macros MKTITLE and RUNPLOT execute:
%macro mktitle(proc,data);
title "%upcase(&proc) of %upcase(&data)";
%mend mktitle;
%macro runplot(ds);
%if %sysprod(graph)=1 %then
%do;
%mktitle (gplot,&ds)
proc gplot data=&ds;
plot style*price
/ haxis=0 to 150000 by 50000;
run;
quit;
%end;
%else
%do;
%mktitle (plot,&ds)
proc plot data=&ds;
plot style*price;
run;
quit;
%end;
%mend runplot;
%runplot(sasuser.houses)
When this program executes, this SYMBOLGEN output is written to the
SAS log:
SYMBOLGEN: Macro variable DS resolves to sasuser.houses
SYMBOLGEN: Macro variable PROC resolves to gplot
SYMBOLGEN: Macro variable DATA resolves to sasuser.houses
SYMBOLGEN: Macro variable DS resolves to sasuser.houses
Copyright © 2009 by SAS Institute Inc., Cary, NC, USA. All rights reserved.