Mapthematics Forums

The Hammer projection is also known as the Hammer-Aitoff projection, as Hammer explicitly cited Aitoff as an inspiration for it. It's possible that someone saw "Hammer-Aitoff" and tried to abbreviate it to the wrong half. Well, that may have happened on occasion. But this isn't an isolate...

In the Lund Observatory in Sweden, there is a magnificent painting and map of the starry heavens, in galactic coordinates, which took five years to make. That is, the map is also a painting. It was completed in 1955. The web site of the observatory notes, no doubt correctly, that in 1950, Professor ...

When both projections involved are pseudocylindrical (or one of them is cylindrical), it's true enough that finding an equal-area projection intermediate between them is straightforward - just average the coordinates along the central meridian, and then make an equal-area pseudocylindrical with that...

So long as it unavoidably comes in multiple variations, you can't really claim it's the One True Way of blending maps and that all other ways are obsolete. I think you seem to be missing the point. If you blend two conformal maps simply by averaging their coordinates, the resulting map will also be...

I had, in searches related to this most recent find, run across, once again, another map on a mysterious pseudocylindrical projection. But this one was from Canada. Just now, I managed to find a larger-scale image of the map, and I learned it's available under the Open Government License 2.0, which ...

If it makes you feel better, a while back there was a North Korean map on the Chinese polyconic-based projection to which I think I posted a link in this group.
https://www.reddit.com/r/MapPorn/comments/1ht3szb/world_map_published_by_north_korea_in_2024_4096_x/

I decided to search for "North Korean Atlas" instead of "North Korean World Map", and I turned up a result which finally let me see a genuine world map from North Korea: https://www.cartographerstale.com/p/an-official-atlas-of-north-korea However, all is not quite well. I can't i...

Given that, is the use of the label "Tartary" to denote the land of the Tatars really so bad? I'm not claiming that there was anything wrong with using that geographical designation. I noted there's a claim that it fell into disuse, and that this ties into some rather preposterous claims ...

daan wrote: ↑Sat Jan 24, 2026 8:34 pm You are welcome to include links.

Sorry;
http://www.quadibloc.com/maps/mps0404.htm
is the page on my site to which I was referring.

I bumped into a YouTube video which claimed that the ancient land of Tartary... disappeared from encyclopedias and the like in 1920. It turns out there's a pseudo-scientific theory claiming that several modern bridges in Russia are really ancient bridges from mediaeval Tartary that were made by a lo...