Tissot indicatrix

[asinghvi17]

colors on a mesh maybe? or deformations using decomposed circles (probably better).

[asinghvi17]

I need to implement a geodesic module for this. @Datseris would you be willing to help? Should be a straightforward integration to Proj's C-library (possibly using https://github.com/SciTools/cartopy/blob/master/lib/cartopy/geodesic/_geodesic.pyx as a reference as well)?

[visr]

Nice. I don't much about geodesic calculations, but can drop links as usual ;)

As mentioned on https://proj.org/geodesic.html, PROJ uses GeographicLib for this.

Interestingly GeographicLib has been ported to Julia in https://github.com/anowacki/GeographicLib.jl, and there is an open PR to incorporate this into Geodesy.jl: JuliaGeo/Geodesy.jl#53.

[Datseris]

I can't make any promises at the moment, especially with things I am not familiar with, but in general I'll be contributing to GeoMakie.jl. I am not sure I can do much about this specific issue though, I've yet to grasp the basics...

[asinghvi17]

As it turns out, a proper Tissot indicator should really be done using great circle calculations. There's a new example in #207 which shows how you can use Proj.jl's new geodesic API for this purpose.

Still waiting on antimeridian cutting which should come with GeometryOps.jl fairly soon!