Mapthematics Forums

I assume that it's "pseudo" in the sense that if the underlying data is from an ellipsoid rather than a sphere, it's not truly conformal, only approximately so. This can be a problem if you were actually counting on the Mercator's property of being conformal. Mind you, this is fairly easy ...

I would describe this as a perspective projection with a "height" of −½, halfway between the gnomonic projection at 0 and the stereographic projection at −1. I can see where you'd get ¾ if you counted diameters instead of radii, but where do you get ⅞? Ah, got it, you're talking about two ...

While the latest G.Projector does lack making oblique aspects of arbitrary projections... it did allow oblique aspects of the equirectangular, so I had used a two-step process. Yeah, I can do that workaround easily, but it leads to sloppy graticules because they're also "reprojected". And...

I'm too desperate to have support for more projections to be that fussy. The new projections in version 3.x (or 2.x later than 2.5, which is what I have) seem to be fairly obscure ones, not anything that I'm interested in. If they added Eisenlohr, or better polyhedral projections, or the ability to...

Your link is broken. It seems like you're too used to HTML syntax. Here's the correct version: http://www.quadibloc.com/maps/images/compare.jpg If the "Spherical Radius of 108°" caption was in the original drawing and means what I think it means, then that would indicate a farside perspect...

Of course, it's a moot point because they'll never regain the mainland anyway. Eh, "never" is a strong word for hypothetical events that are decades or centuries into the future. We can't know what time will bring. Not many people saw the collapse of the Soviet Union coming before it happ...

But in this case, the war is too recent; everyone is aware of it; I would not underestimate people's ability to fail to pay attention to geopolitical events happening further away than their backyard. There are probably a few people out there who watch so little news that they've missed the fact th...

I don’t think “disputed” is anywhere as clearly defined or as desirable a designation as it might casually seem. From Taiwan’s perspective, it is Taiwan that has the legitimate claim to governance of mainland China. Does that mean maps ought to mark all of China as disputed territory? What of all t...

I recall reading that US British military forces temporarily reverted to referring to Iran as Persia and Iraq as Mesopotamia during the Iran-Iraq war the second World War (strikethrough denotes parts I turn out to have misremembered on looking it up!), to avoid confusion from two neighboring countri...

Finding a map I could use that showed Tannu Tuva led me on quite a chase... I was not previously aware that Tannu Tuva was even a place, sovereign or otherwise, let alone where it might be. The 1944 annexation of Tannu Tuva was also not recognized by the U.S. government. Well, from what I'm reading...