Hi Rick,
As for the 4th graph, it shows 6 predicated probability lines in a panel by angle=120, 60, 150,30,180 and 0 respectively. The variable "Angle" is numerical. I wonder if I can use replace with a categorical variable to show category='AB','AC','AD','BB','BC' and 'BD' respectively. I tried using the format statement in "proc logistic" procedure. But it doesn't work. Could you shed some lights to get it done?
Thank you so much!
Ethan.

Thanks.
Ethan