Masterpiece is live! I built significantly more features than I had anticipated (gap and range analysis, mainly), so I'm considering this v2.0. I'd like to make the bar charts more interactive (maybe on hover, each bar is blown out into a pie chart), and it would be nice if the entire graph scaled with the webpage. There are a few lines of d3 that are a bit sloppy, but overall I think the code is legible and optimized where possible. Anyway, this was my 2022 project and it was a blast to build. Now on to brainstorming for 2023!