How can one set the size of an igraph plot?

问题

I'm currently plotting my graphs like this:

        ig.plot(graph, target=file, vertex_color=membership,
            vertex_label=[index for index, value in enumerate(graph.vs)],
            vertex_frame_width=0,
            palette=ig.ClusterColoringPalette(len(set(membership)) + 3))

The plot is output to a PDF file on a single page. It looks decent but the nodes are too crowded. Is there a way to pull the nodes apart so that I can actually see all the edges? I was thinking of increasing the size of the plot but I don't know how to do that.

Here's how it looks right now:

回答1:

From thie python igraph tutorial

Layout objects also contain some useful methods to translate, scale or rotate the coordinates in a batch. However, the primary utility of Layout objects is that you can pass them to the plot() function along with the graph to obtain a 2D drawing

visual_style["layout"] = layout
visual_style["bbox"] = (300, 300)
visual_style["margin"] = 10
plot(g, **visual_style)

来源：https://stackoverflow.com/questions/24597523/how-can-one-set-the-size-of-an-igraph-plot