Add "Equal Earth" projection

[mbloch]

I just released v0.17, which includes the the Equal Earth projection using the Proj.4 name "eqearth".

The mapshaper-proj source file is here

Original Java source file is here

(@berniejenny, I copied the comment block from your source code to comply with the Apache license that you're using, please let me know if there's a problem with the way I'm citing your work).

Link to journal article is here

+proj=eqearth is already available in Mapshaper, here is a screenshot comparing Equal Earth to Robinson:

[mbloch]

See also OSGeo/PROJ#1085 and proj4js/proj4js#295

[berniejenny]

Thanks, Matthew. This was quick!

[ahocevar]

@mbloch @berniejenny Is it ok if I take https://github.com/mbloch/mapshaper-proj/blob/master/src/projections/eqearth.js as base implementation for use in https://github.com/proj4js/proj4js? There won't be many changes.

[mbloch]

Fine with me!

[berniejenny]

Fine with me!

…

On 23 Mar 2024, at 5:01 AM, Andreas Hocevar ***@***.***> wrote: @mbloch <https://github.com/mbloch> @berniejenny <https://github.com/berniejenny> Is it ok if I take https://github.com/mbloch/mapshaper-proj/blob/master/src/projections/eqearth.js as base implementation for use in https://github.com/proj4js/proj4js? There won't be many changes. — Reply to this email directly, view it on GitHub <#8 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABPJVAMCNIHXRH5XXJ2Q2L3YZRWZLAVCNFSM4FORPMH2U5DIOJSWCZC7NNSXTN2JONZXKZKDN5WW2ZLOOQ5TEMBRGU3DGNRUGQ3Q>. You are receiving this because you were mentioned.