This is probably something easy, but I have a stacked chart and want to have reference lines at 25%, 50%, and 75% behind the bars so that I can only see it in the spaces between the bars. Unfortunately, it is currently overlapping the bars. Is there an option that I'm missing? Thanks. proc gchart data=ds1; vbar &TimeVar / discrete subgroup=&GrpVar. group=&TimeVar g100 nozero ref=(25, 50, 75) wref=1 cref=greydd freq=&SmmVar. type=percent width=10 space=2 woutline= 1 gaxis=axis1 raxis=axis2 legend=legend1; run;
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