d3-voronoi

Long story short :

• the typeStation function reshapes the csv that will be used for Voronoi
• it could be completed with any other "property" of the csv
• then, the argument stations of the global function can be used as an array

So, here the complete typeStation :

If the goal is:

is to combine d3 force simulation, g elements, and voronoi polygons to make trigger events on nodes easier, such as dragging, mouseovers, tooltips and so on with a graph that can be dynamically updated.

I'm going to step back a bit from the specifics of your code and try to get to the goal. I will use two primary sources (one which you reference) in this attempt to get there (and I may be way off base in doing so).

Source one: Mike Bostock's block circle dragging example.

Source two: Mike Bostock's Force-directed Graph example.

I hope that this approach at least helps to get to your goal (I took it partly as I was having difficulty with your snippet). It should be useful as a minimal example and proof of concept.

As with you, I'll use the circle dragging example as the foundation, and then I'll try to incorporate the force-directed example.

The key portions of the force directed graph that need to be imported are defining the simulation:

var simulation = d3.forceSimulation()

Assigning the nodes: