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sassas-macro

Conditionally print titles in SAS?

I want to display different titles for different variables that go through my macro.

%macro mplot(dsn,vn);
title1 'hey!';
%if "&vn"="" %then title2 "Ooos" justify=left;
%else title2 "Ooos &vn" justify=left;
title3 "this line";
%mend mplot;

%mplot(_avg);
%mplot(_avgs1,s1);

Ideal titles are:

hey!
Ooos
this line

hey!
Ooos s1
this line

But the output is 

hey!
Ooos
title3 this line

hey!
Ooos s1
title3 this line
Solution

  • I solve it by adding a semicolon after it.

    %macro mplot(dsn,vn);
title1 'hey!';
%if "&vn"="" %then title2 "Ooos" justify=left;
%else title2 "Ooos &vn" justify=left;;
title3 "this line";
%mend mplot;

    But I don't understand why an extra semocolon is needed.