Hi Miguel Thanks for your reply. But Partial dependence plot can be used when you have more than 3 variables as well. Partial dependency assists in identifying interaction between different variable in model and have a better interpretation. For example in my study (traffic crash study) using importance variable shows that population density is a significant factor, however how I can find in flouncing of this variable on model. I mean, it is not clear increasing population density increased traffic crashes or decreased it. I know it is possible to find it in SAS model code but it is difficult and time consuming. (for instance http://onlinepubs.trb.org/onlinepubs/conferences/2011/RSS/1/Chung,Y-S.pdf ) mnay thanks Alireza
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