[igraph] Draw vertices in a certain order

[Hugues François]

Hello,

I have a graph with numerous vertices (215), plot from an adjacency matrix. 
Some vertices overlap others. I have a rank attribute that I would like to use 
for ordering plotting order to show important vertices (firstly draw rank 4 
vertices, then rank 3, then rank2, etc.). If there a way to achieve that I 
didn't find it ?

Regards,

Hug