There's also the Lisp-Stat ecosystem, if you don't already know about it. Data-frame, array-operations and LLA (Lisp Linear Algebra) cover much of numpy's functionality; at least enough to get significant work done. On Tuesday, April 11, 2023 at 07:45:50 PM GMT+8, Elliott Johnson <elliott@elliottjohnson.net> wrote: FYI - there appears to be a library called numcl that was written to cover numpy's functionality. https://github.com/numcl/numcl I've yet to try it, but thought I'd pass along the link. Regards,Elliott Johnson -------- Original message --------From: Raymond Wiker <rwiker@gmail.com> Date: 4/11/23 3:53 AM (GMT-08:00) To: Discussion list for Common Lisp professionals <pro@common-lisp.net> Subject: Re: Numpy and Common Lisp? There’s cl-ana, which may be a useful substitute in some cases… or april, possibly. | | cl-anacliki.net | | | | | aprilcliki.net | | | If you specifically want numpy, it may be possible to have Common Lisp talking to python. On 11 Apr 2023, at 08:41, Marco Antoniotti <marco.antoniotti@unimib.it> wrote: Hi Michael I am all for it. But, as I said, I am an academic (and a cat). Should we (as in "a bunch of common lispers", most of whom with day jobs) want to do something like that, how would you want to proceed? Note that I have been part of many past failures. All the best Marco On Tue, Apr 11, 2023 at 1:01 AM Michael Bentley <michael@stray-labs.com> wrote: IMHO, it'd be easier and effective to band up together and FIRST write a proper API specification and THEN implement it in CL. I agree. Here’s the API specification for NumPy: https://numpy.org/doc/stable/reference/index.html#reference Looks rather intimidating. Less intimidating though, than doing the FFI dance, though.