Hi,
I’ve made a chart using your incredible D3 library and wanted to share it with people here.
The notebook is here and a bit messy 
so I’ve also created a “map-based” Zoom and pan version with interactive click on node to access data. Because the chart was so big, I was not able to build the interactivity on Observable and had to learn the map tiling process à la “google map”.
Very interesting project with open source data from suttacentral that contains all the discourses of the historical Buddha translated in english.
Thank you very much for creating sur a nice library and platform to code freely. It was amazing to discover D3 and Observable!