You've come a long way. You've learned how to draw with Canvas, how to animate the canvas in a pure Canvas way, as well as how to use D3 transitions and the Enter-Update-Exit pattern with Canvas. While the Vanilla Canvas way is perfectly reasonable for a great many applications, D3 offers seasoned functionality for data visualization you don't have to abandon. It requires a shift in thinking when building your application, but it can pay out specifically for drawing and animating a large number of points. It will expand your toolbox in a valuable way, especially at times where abundant data might require element-heavy representations.
In the next chapter, we will review a map visualization in SVG and then build one in Canvas. By doing so, you will not only be able to apply the learnings from this chapter, but you will also learn more about the differences...
