Good informative article.
But in proc sgpanel, if we are using panelby statement so in that case how to assign two different color lines for two treatment (i.e. Blue for test and red for placebo) for all subjects?
My code:
proc sgpanel data=trend NOAUTOLEGEND ;
panelby Treatment / layout=columnlattice novarname colheaderpos=bottom SPACING= 3 nowall ;
styleattrs DATACOLORS=(blue red) datacontrastcolors=(blue red) ;
vline visit / response=tgauc group=ENNUM LINEATTRS=(pattern=1) markers FILLEDOUTLINEDMARKERS MARKERATTRS=(symbol = circlefilled) ;
run;

Above code gives assigned colors to group= option but not to the variable of panelby statement.