[igraph] filter graph based on degree + x, y coordinates has node attributes

[Ryanne Turenhout]

Hi everyone,

I want to filter a graph that I made. If a vertex has a degree 1 and is connected to another vertex who has also got degree 1 -> delete both vertices (and also the corresponding edge).

But if a vertex has a degree 1 and is connected to a vertex with degree > 1 do not delete the vertex.

I just cannot figure out how to do this, been working on it for a while now. I tried clustering but it just gives me 26 clusters (???). I have a graph of 26 nodes / 17 edges, just a small sample from my database.

Second,

I want to layout the graph but I want to add the coordinates as attributes to the nodes instead of plotting it as an image file. How to go about this? I cannot find any examples.

Any help would be much appreciated.

Best,

Ryanne