Hi Stefan, In the danger of stating the obvious: Have you seen this older post on the mailing list? (http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... ) On the surface of it it seems to deal with a similar problem? Best, Philipp From: Stefan Vujovic [mailto:stefanvujovic93@gmail.com] Sent: 28 September 2017 15:06 To: graph-tool@skewed.de Subject: [graph-tool] Help with animating a graph Hello Tiago, I am trying to make an animation using Graph tool. My data is preety simple, i have a interactions between two vertices and timestamps of those interactions, something like this: time vertex_id vertex_id 1830 356 681 1835 12 590 1835 123 456 What i am trying to do, is to show all interactions per time step, therefore i would like to animate edges, display all edges (interactions) that happen at a certain time step. What i don't get is how to loop through the list of timestamps. Should I even do it like this. I imagine looping through the list of timestamps, where every time stamp points to a list of all the edges and then I somehow (unclear how) display them. Also, what happens in the update_state function from this page https://graph-tool.skewed.de/static/doc/demos/animation/animation.html is a bit unclear to me. Could you please help me somehow? Is there any other resource/documentation I could look at, because a lot of the code from the example is like magic to me. Best regards, Stefan