Mon Sep 18, 2017 News on map-projections.net
A comparatively large update with several changes that are partly related to each other (at least »behind the scenes«).
My Blog gets launched
… well, that’s obvious.
After all, you’re reading it right now. ;-)
If you are interested in the motives for adding the blog: Read the very first blog post.
New Versions of the Projection images
The physical maps with relief ocean floor have been
replaced by a new version for (almost) all projections. The difference is admittedly rather small,
but it was important to me nonetheless. The images showing the ocean with a flat blue tint will soon be replaced.
That topic is covered in detail in in an own blogpost.
A handful of new projections have been added:
Bottomley (in two configurations), Breusing Geometric, Cabot (in two configurations).
In addition, there are also additional configurations of projections that were already available in the comparison: The interrupted McBryde S2, the equidistant conic projection, the sinusoidal projection using the sinoidal interruption scheme, as well as an unusual interrupted variant of the Wagner VII, which to my knowledge has never before been presented in this way.
Read more about the Cabot projection in its own blogpost. About the new conic projections, see below.
Changes on interrupted projections
Before, all interrupted projections have been shown in the Goode interrupt scheme. The idea behind it was to achieve a better comparability this way. In retrospect, I have to say that this idea was a bit misguided in the first place: If a cartographer proposed an own interrupt scheme, I should use this scheme for his projections! Therefore, the projections of Boggs and McBryde are now shown in the interruption scheme designed by their authors.
Small changes on the projection images
The images of two projections were reworked a bit.
The Albers projection, which was truncated at the top and the bottom, is now show completely.
Laskowski’s tri-optimal projection has a special peculiarity: The pole line loops and intersects itself. I think this is obvious in the image below – and it actually is a loop, not two »horns« whose tips touch each other.
However the previous image kind of suggested »horns« – I hope the new image will bring home the message less ambiguous
Changes on the Conic Projections
Now, this might be a bit confusing. I’m trying to sort it out comprehensibly…
The projection formerly labeled Lambert Equal-Area Conic Projection
is now called CM Lambert Equal-Area Conic Projection.
CM is for »compare maps«, indicating that it’s an unusual configuration that is only used for matters of comparison.
For the latter projection, a new configuration (again, one which is more commonly used) has been added; it’s called 20/60N Equidistant Conic Projection because it has been rendered with standard parallels at 20 and 60° North.
So much for the news.
What’s the next step? At the top of my to-do list are of course the new images for the flat ocean maps. I’ve already started with it, but that takes time… Moreover, I already have a few articles in mind which I’m going to publish in the blog. Stay tuned!