Mapthematics Forums

Didn't Carl Braun, a Jesuist priest, invent it along with his distortion-free equator version of the Cylindrical Stereographic back in 1867? At least I read about him creating another perspective cylindrical that was called the Pseudo-Mercator(the same name applied to Web-Mercator). I thought this ...

I was amused to be told that the primary reason for using Winkel in the earthquake map was that they liked its aspect ratio better for page display. I don't blame you for being amused. I noticed that the National Geographic used the original Winkel Tripel, and not Bartholomews' modification of it, ...

A friend of mine dragged me to the Reuse Centre in Edmonton, where I picked up a few free items as she picked up several for use in her craft activities. Among them were three issues of the National Geographic magazine. One of them was the one with a holographic cover that happened to be the one whe...

My drawing of the projection was at the bottom of my page on the Gall Stereographic, but there was a bug in the program, stretching it horizontally.
I have now corrected the bug so that I and everyone else can see correctly how it looks.

Recently, I added the BSAM projection to my page about the Gall Stereographic projection. I noted that its reduced stretch was less objectionable. It led me to thinking that another way to have less stretch but still have 40 degrees as the standard parallel, would be to start with a projection close...

I have had very good luck recently in finding things that I wanted to include on my pages about map projections, but was not previously able to. EDIT: Just now, I've edited three pages on my site, after finding the April, 1929 issue of the Monthly Weather Review on the Internet Archive. My page on t...

I found the map I was looking for.
In an atlas from 1896. Alex Everett Frye is the individual responsible, and this map appeared in several books from Ginn and Company. I found it in his Home and School Atlas; he made more extensive use of it in his Elements of Geography.

I've found Fawcett's paper online now. And it pointed me to where I need to look for the original idea of a projection on this aspect. It turns out the inspiration for his first map came from a book published in 1902! Specifically, "Britain and the British Seas", by H. J. Mackinder, he of ...

Recently, I was searching for information about Goode's Polar Equal-Area Projection, or perhaps another similar projection, and I came across a familiar image. It was described as a very early advanced interrupted map. I think it was credited to a cartographer named Farr. I had remembered the image,...

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 make oblique aspects of arbitrary projections instead of only a small ha...