How can I add a text or footnote that takes the value of a variable? So it changes depending on the BY group
Why not let SAS do that by itself?
proc sgplot data=sashelp.iris;
scatter x=sepallength y=sepalwidth;
by species;
run;
Result
If the BY statement default text (as shown by @PeterClemmensen) are not exactly what you want, you can add the BY variable name and/or BY variable value into the TITLE or FOOTNOTE statement text, as described here:
which applies to all SAS procedures, not just PROC SGPLOT.
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