The person who wrote this blog also wrote the very popular and famous D3 visualization library for Javascript. It also looks like this is javascript from the code.
Ah, thanks. I can see it is also based on the grammar of graphic. Neat!
Re:Bank Failures Visualized
by virtuallyvivek on Wednesday May 03, 2023 @08:10AM
(#35801357)
JavaScript and the library is Observable Plot
I am used to R + ggplot2 and I am aware that are quite a variety of other tools out there. In this case I unable to identify which one he is using.