Add finer ranking levels

[francois-rozet]

This PR removes the S+ rank (to comply with the Japanese grading system) and adds finer ranking levels (now S, A+, A, A-, B+, B, B-, C+ and C).

I also used a different cumulative distribution function (CDF) for stars and followers. The distributions of these two stats have heavier tails (meaning that large values are more likely) than what an exponential distribution allows. So instead I used an approximation of the log-normal CDF. This makes the initial ranks (C to A) more accessible, but the final rank (S) extremely hard to reach.

I also replaced the word score by percentile.

[vercel]

@francois-rozet is attempting to deploy a commit to the github readme stats Team on Vercel.

A member of the Team first needs to authorize it.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.27 🎉

Comparison is base (e0b3d83) 97.32% compared to head (65182a2) 97.59%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2762      +/-   ##
==========================================
+ Coverage   97.32%   97.59%   +0.27%     
==========================================
  Files          24       24              
  Lines        4742     4824      +82     
  Branches      431      448      +17     
==========================================
+ Hits         4615     4708      +93     
+ Misses        126      115      -11     
  Partials        1        1              

Impacted Files	Coverage Δ
src/calculateRank.js	100.00% <100.00%> (ø)
src/cards/stats-card.js	100.00% <100.00%> (ø)
src/fetchers/stats-fetcher.js	92.63% <100.00%> (+0.87%)	⬆️

... and 9 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
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[rickstaa]

Normal

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=torvalds)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=rickstaa)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=anuraghazra)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=francois-rozet)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=FleetAdmiralJakob)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=objektwerks)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=meurissemax)

include_all_commits=true

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=torvalds&include_all_commits=true)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=anuraghazra&include_all_commits=true)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=rickstaa&include_all_commits=true)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=francois-rozet&include_all_commits=true)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=FleetAdmiralJakob&include_all_commits=true)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=objektwerks&include_all_commits=true)

![](https://github-readme-stats-git-rank-rickstaa.vercel.app/api?username=meurissemax&include_all_commits=true)

[rickstaa]

Damn, I love it ❤️‍🔥! @francois-rozet I think you did an outstanding job! Will review this weekend 👍🏻.

[rickstaa]

@francois-rozet I already checked the PR. Maybe you can merge #2749 into this PR and update it to the new ranking mechanism?

[francois-rozet]

Sure!

[rickstaa]

Sure!

Amazing! Based on all the work you did for this repository, I asked @anuraghazra to invite you as a collaborator. You are welcome to accept or decline based on whether you have the time available. In any case, thanks again for tackling the ranking issue 🙏🏻.

[francois-rozet]

Sorry I have a really busy week, I'll do this as soon as possible.

Thank you for the kind words, that's an honor 😁

[rickstaa]

Sorry I have a really busy week, I'll do this as soon as possible.

Thank you for the kind words, that's an honor grin

Ha, no problem, take your time. We received many positive reactions after your last pull request was merged 👍🏻.

[francois-rozet]

@rickstaa I Just updated the description!

[rickstaa]

Great thanks! Merged into master 🚀.