I have a dataset similar to the image above and I also want to present it similar to how it's done in the image, basically it's nodes with multiple parents.
So far I've been using d3.js and displaying it with a force layout, so it's displayed something like this: http://bl.ocks.org/mbostock/4062045 , but I want it displayed more like this: http://mbostock.github.io/d3/talk/20111018/tree.html but where nodes can have multiple parents instead of just one.
Is that possible d3.js? And if not, what I can I use?
Also, does such a graph have a name?