[graph-tool] Fixing position of root vertex

Hi, I'm using the code below to fix the position of a root vertex. I'm developing an application and I wanna make sure that the root vertex is always located in the same place. g = Graph() v_pin = g.new_vertex_property("bool") v = g.add_vertex() v_pin[v] = True #root vertex ... pos = sfdp_layout(g, pin=v_pin) graph_draw(g, ...) I suppose it's working, but how I can confirm which one is the root vertex in my result? <http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/file/n4025773/mxt.png> -- View this message in context: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... Sent from the Main discussion list for the graph-tool project mailing list archive at Nabble.com.