[graph-tool] adjacency matrix

Hello list, I'm going on with my algorithms and i'm stuck on a thing: I cannot find the interface on graph_tool to access the adjacency matrix of the graph. The rationale behind my request is that i have a graph and i have a matrix based algorithm to calculate new edges and new weights. So I'd like to: (1) create a graph through the usual API (2) get its adjacency matrix (3) modify it with my matrix operations based algorithm (4) feed it back to the graph / create a new graph from the matrix What is your suggestion to do this in graph_tool? TIA, Claudio -- Claudio Martella claudio.martella@gmail.com