I wanted to introduce the C++ DataFrame -- https://github.com/hosseinmoein/DataFrame -- library in this forum for the first time. C++ DataFrame is a library for data and numerical analysis like Python’s Pandas or R’s data.frame. I started working in this package in my spare time in 2018. But since I have kind of retired recently, I have added more significant contributions both in terms of functionality and documentation.
I appreciate your feedback.

It's certainly an interesting library. I will dive into it later.

Did you consider to propose it to boost. It looks like it could fit in there.

Thanks,

I did not consider that. I don't even know how to go about doing it
Maybe the very core functionality of DataFrame fits into Boost, but not all the statistical and ML routines.

I think all of it could fit; https://www.boost.org/doc/libs/1_75_0/doc/html/accumulators/user_s_guide.html#accumulators.user_s_guide.the_statistical_accumulators_library for example is already a bunch of statistical stuff