A Simple Tree Diagram Explained

Tree diagram code

We are going to work through a simple example of the code that draws a tree diagram. This is more for understanding the process rather than being a good example of code for drawing a tree diagram. It is a very limited example that lacks any real interactivity, which is one of the strengths of D3.js graphics. However, we will outline the operation of an interactive version towards the end of the chapter once we have explored some possible configuration options that we might want to make.

The graphic that we are going to generate will look like this: