Strebe wrote:Thanks, PM 2Ring. I have just posted an explanation here:
Idha wrote:I wonder what a "double-Hammer" map, with the Mollweide-to-Hammer transformation applied to a map that's already in Hammer, or a "double-Mollweide" map, with the Hammer-to-Mollweide transformation applied to a Mollweide map, would be like.
PM 2Ring wrote:Thanks again. That "projection of a projection" technique is a neat idea; I guess it could be used to make vast numbers of variant projections. And you could do all sorts of weird & wonderful things if you use a different surface for the intermediate stage, rather than using a sphere. Reading your explanation in the above link reminded me of a projection technique that I read about a few years ago, which involved a couple of stereographic projections, but using a pseudosphere as the intermediate surface. But I can't for the life of me remember what the application was.
BTW, there seems to be a minor typo in your LaTeX. On line 2, you've used \phi_p instead of \varphi_p.
Brett Dunbar wrote:oelbert wrote:What happened to the Aitoff projection? I was disappointed to see it wasn't represented here...
The fairly similar Hammer projection gets more use in practice than Aitoff.