Fixing the Voronoi Diagram
Understand how to improve Voronoi diagrams in D3.js by adding enlarged interactive circles that highlight hovered points. Learn how to manage mouseenter and mouseleave events, use pointer-event styling to avoid flickering, and enhance tooltip clarity for clustered data points in your visualizations.
We'll cover the following...
In this lecture, we are going to fix a problem with the Voronoi diagram. If we hover our mouse over any of the dots, the tooltip appears. That is great, but we have lost the effect we had on the circles. The circles remain the same color and size. It is not clear as to which dot the reader is hovering over. This can become even more difficult to read if we are hovering over dots clustered close together.
We can fix this problem by drawing another circle. We will draw a circle over the original circle. The newly drawn circle will be enlarged with its color change. As before, when the reader hovers away from the dot, the newly drawn dot will be removed.
Drawing a circle
We are going to start by drawing a circle. The new ...