Mapthematics Forums

Hufnagel and HEALPix are modern projections that relax the requirement of monotonically decreasing parallel length. Denoyer relaxes the constraint of constant scale along parallels. Relaxing that latter constraint is not a definition I would use, ever. — daan The Denoyer's relaxation seems to be al...

And the tristandard experimental projection makes this false: In a pseudocylindric projection, the only parallel that could be conformal is the equator. The only other points that could be conformal would be along the central meridian. This series is pseudocylindric. Therefore none of them are confo...

At least it’s a bug that lets you create funny if useless projections… ;) Or it could be used to map oval-shaped regions, even though this projection was meant to map one specific region, just like how GS50 could be used to map US-shaped regions, or Mercator could be used to map great circle shaped...

Of course it looks funny, but as it's just presented as an experimental projection, that's not really a valid criticism. However, it doesn't seem to be equal-area. With that constraint removed, it's trivially easy to do so much better: http://www.quadibloc.com/maps/images/merla.gif No shearing dist...

tristandard projection — a pseudocylindrical projection that uses a fitted quartic polynomial to achieve three standard parallels (-60, 0, 60) that have no shearing distortion whatsoever.

daan wrote: ↑Wed Apr 22, 2020 6:19 am Which you know very well is false. Hopefully you’re finished trolling now. If not, well…

— daan

Why do you keep saying "you know very well"

daan wrote: ↑Tue Apr 21, 2020 6:39 am The projection is defined for a particular aspect and is not meaningful with a different aspect. The boundaries have been defined against that aspect.

— daan

So why is then there an option to change aspect?

I'm starting to think that Snyder described the entire software, and you are the one implementing it.

What about a world map? With world maps, you have to be careful and state clearly what you mean: a world map that is only ripped at one point, like an azimuthal projection? A world map that is ripped along an entire meridian like the maps I show on this page? Something else? If you only interrupt a...

Those four maps are the same, but they have different boundaries, even though they are unconstrained.