Hello, I have tried to use straight_line_drawing.cpp that comes with Boost Vault. It works perfectly on the 7-node example provided. However, it breaks down when I use my own graphs. It places nodes on top of each other when I do the following graph: graph g(6); add_edge(0,1,g); add_edge(0,2,g); add_edge(0,3,g); add_edge(1,2,g); add_edge(1,3,g); add_edge(1,4,g); add_edge(1,5,g); the output given is: 0 -> (0, 0) 1 -> (2, 0) 2 -> (0, 0) 3 -> (1, 1) 4 -> (0, 0) 5 -> (0, 0) Nodes 0, 2, 4 and 5 occupy the same location, even though the graph is planar, simple and connected. Furthermore, it gives me segmentation fault when I do the following K(3,3): graph g(6); add_edge(0,1,g); add_edge(0,2,g); add_edge(0,3,g); add_edge(1,2,g); add_edge(1,3,g); add_edge(1,4,g); add_edge(1,5,g); add_edge(2,3,g); add_edge(3,4,g); add_edge(3,5,g); add_edge(4,5,g); Can you please have a look at it. Thank you, Dmitry Kamenetsky