This is just a silly side project I made, and really isn't intended to be used by anyone else. With that being said, I'm still hosting the code, because why not :3 If you somehow aren't here from a Desmos community, or just need the link again, here is the graph.
Usage: Literally just do node index.js [filename], then copy the output into the "r_om" variable on the Desmos page.
Warning: This has literally zero error checking besides making sure you specified a valid file. If you make a typo, this will not catch it. The only way to catch mistypes is by seeing the undefined in the output.