Cahill–Keyes projection?

[maphew]

Cahill–Keyes projection?

[Fil]

🦄
https://beta.observablehq.com/@fil/cahill-keyes-projection
d3/d3-geo-polygon#8

[maphew]

oops, @espinielli has already made significant strides in this direction and issued a pull request to d3-plugins: d3/d3-plugins#69

[espinielli]

see this gist too: http://bl.ocks.org/espinielli/5689783

[Fil]

I would like to help with this. What is the current status, what needs to be done?

[espinielli]

The implementation of the perl code from Gene Keyes site is available in my implementation.
All is needed is to make it fit Jason Davies plugin...but I never really got the time to fully understand it.

[mbostock]

@espinielli If your code is open-sourced under a LICENSE and you can point me to it, I’d be happy to do the work to setup a d3-geo-cahill-keyes repository and host it there. Assuming it doesn’t need Jason’s clip-to-spherical-polygon feature which hasn’t been released yet (sounds like it doesn’t d3/d3-plugins#69 (comment)).

[espinielli]

Running code is in these blocks

http://bl.ocks.org/espinielli/5689783
http://bl.ocks.org/espinielli/b6e2f37814a19dc461f8
http://bl.ocks.org/espinielli/e1e4f9429aa386de6214

The last one is a rotating version and it shows that probably clip-to-spherical is in need...

License is DWYWAMCM: do whatever you want and maybe cite me ;-)

Some years ago I submitted a PR to have it included but had never really time to study/understand and make my implementation fully in line with Jason d3.polyhedral projections...even if I started from that same code...

[espinielli]

You should send an email to Gene...he would be delighted

[Fil]

Good idea, will do.

[maphew]

claps and cheers! Thank you 👍