Hello Keith, This mailing list will shut down soon. Please use the forum instead:
https://igraph.discourse.group/ The python-igraph documentation has a short tutorial on visualization, which should be helpful: https://igraph.org/python/doc/tutorial/tutorial.html#layouts-and-plotting For trees, look at the Reingold-Tilford layout method. On Fri, 31 Jul 2020 at 16:20, Keith Paton <keith.pa...@skynet.be> wrote: > > Hello igraph, > > I am interested in how to draw a tree, as discussed below. Who can help? > > Thanks, > > Keith Paton > > Independent researcher > > --- > > A tree is a connected graph without cycles; it can be drawn in the plane in > many different ways. Somewhat remarkably, the drawings of all the trees with > up to ten nodes published by Harary and by Schlick are remarkably similar; > the former were drawn by Harary’s artist, the latter by the program > Python.igraph. > > How does that come about? Harary wrote in 1969 so did not have access to > Python.igraph. What rules are used by Python.igraph and how does it come > about that the drawings it generates are identicalto those in Haray, even > down to the five cases where IMHO both systems make a mistake and draw the > tree wrongly. > > Harary F (1969) Graph Theory Chapman & Hall > > Tamar Schlick runs the RNA research group at NYU. Her group maintains a > database of trees with up to ten nodes, all drawn by Python.igraph > > _______________________________________________ > igraph-help mailing list > igraph-help@nongnu.org > https://lists.nongnu.org/mailman/listinfo/igraph-help _______________________________________________ igraph-help mailing list igraph-help@nongnu.org https://lists.nongnu.org/mailman/listinfo/igraph-help