Hi there,
It's been some time so I thought I'd request again to have some simple geometric solid projections.
I would love to be able to project a map onto a Regular Dodecahedron or Icosahedron.
If this isn't possible natively, are there some "long hand" steps that could achieve a passable result?
Thanks and best regards,
M
Geodesics
Re: Geodesics
Hello Maezer.Maezar wrote:Hi there,
It's been some time so I thought I'd request again to have some simple geometric solid projections.
I would love to be able to project a map onto a Regular Dodecahedron or Icosahedron.
If this isn't possible natively, are there some "long hand" steps that could achieve a passable result?
Thanks and best regards,
M
There are two generic ways I know of to produce a useful projection for a polyhedral face: conformal or gnomonic. Geocart does not offer a generic conformal regular polygon, so that would be out. That leaves gnomonic. With a gnomonic projection centered on each face, the graticules of each face will match up along the edges, although, unlike conformal, they will be kinked where they meet up.
The long-hand steps would be:
1. Identify the geographical center point of each polygon face.
2. Create a gnomonic map for each face, centered on the geographic center of that face.
3. Crop each map to the shape of the face’s polygon.
4. Assemble.
Does that help?
— daan
Re: Geodesics
Yes, that helps. Thank you! (It's been awhile, but I'm back on this )
I will struggle a bit with how to do the face centering. Any tips would be helpful, especially for the dodecahedron.
I will struggle a bit with how to do the face centering. Any tips would be helpful, especially for the dodecahedron.
Re: Geodesics
As it happens, I’m working on this at this very moment.
Best,
— daan
Best,
— daan
Re: Geodesics
> I’m working on this at this very moment.
This is really great news!
This is really great news!
Re: Geodesics
I'm back after some time. Did this ever come to pass? I will be updating to the latest version as soon as I go to Mac Big Sur. (Speaking of which, any issues there? I'll search
Re: Geodesics
It did! See release notes here.Did this ever come to pass?
Sadly, Big Sur broke our font engine, causing a crash when creating a map. I have a fix, but it hasn’t been released yet.
Cheers for the new year,
— daan