We bootstrapped a simple AngularJS application in the previous section. Now, the goal is to integrate a D3.js component seamlessly into an AngularJS application—in an Angular way. This means that we have to design the AngularJS application and the visualization component such that the modules are fully encapsulated and reusable. In order to do so, we will use a separation on different levels:
Code of different components goes into different files
Code of the visualization library goes into a separate module
Inside a module, we divide logics into controllers, services, and directives
Using this clear separation allows you to keep files and modules organized and clean. If at anytime we want to replace the D3.js backend with a canvas pixel graphic, we can just implement it without interfering with the main application. This means that we want to use a new module of the visualization component and dependency injection.
These modules enable us to have full control...