`compute_count` broken in rust implementation of geomedian?

[maawoo]

Hi all,
first off, great job on the rust implementation of geomedian. It's impressively fast! 🙂
I did a quick test between the implementation in version 0.2.4 of the package and the add-rust-geomedian-impl branch. Shape of my test dataset is (time: 5, y: 1311, x: 3704) and the average absolute differences for each variable are quite small, however, the count variable stands out and has not been computed as expected (see second screenshot):

Is this a known issue because the implementation has not been finished yet?

[maawoo]

In comparison to the new version of the calculation, the old version seems to be more performant and works:

I can do a PR if there are no other plans for improvement or ideas for fixing the newer version.

[robbibt]

Ping @omad