Compare Map Projections

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17 comments
There are further comments in the german version.

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Andreas Skyman

I think this might be my new favourite site on the internet. Wow! Everything I've been wanting to explore about projections at my fingertips! The _only_ drawback is that now that I've found this site, I won't feel so compelled to implement/write my own version of it, but hopefully I will find something else to do with my time. Thank you very much!
Wed Nov 16, 2016 6:24 pm CET   –    One Reply

Tobias Jung

Thank you very much for your kind words! :-)
Hope you keep enjoying the site, and whenever you’ve got any suggestions, feel free to contact me!
Thu Nov 17, 2016 11:12 am CET

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HumanImprint

Can you look at Wagner II? It says the date was made after Wagner I, but also after Wagner III.
Wed Aug 09, 2017 6:40 pm CEST   –    One Reply

Tobias Jung

Thank you for your comment!

Yes, that’s confusing, but these dates are correct.
Wagner published the projections that are nowadays (he himself didn’t use those numbers) called Wagner I and Wagner III in a paper that was published in 1932. Then, in 1949, he published the book »Kartographische Netzentwürfe«, in which he again presented some of the projections he had developed earlier, along with some new ones.
The ordinal numbers were added later (to my knowledge, by John P. Snyder), using the order in which they are shown in the 1949 book.
And since Wagner went from the equal-area projection, to the projection with some amount of areal distortion, to the one with equally spaced parallels, they are now called Wagner I, II, and III, although they were originally published in a different chronological order.
Wed Aug 09, 2017 7:13 pm CEST

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Nathan

have you heard of the waterman butterfly projection?
Mon Aug 28, 2017 11:30 pm CEST   –    One Reply

Tobias Jung

Oooops! Somehow, I missed to reply… Sorry!
Yes, I know the Waterman butterfly, and I’d love to add it to the website, but no software that I use is able to generate it. Thus, I can’t create the images that I use for all the other projections.
At some point in the future, I’m going to add a post to the blog, listing »the missing projections« that I’m not showing yet for this reasons. It’ll include the Waterman as well as the Dymaxion, Cahill-Keyes, Authagraph…
Mon Nov 13, 2017 12:12 pm CET

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Peter Weenink

Hi, Tobias,
Thanks for your informative projection website! I'm working on Mapvision, a GEO-portal with international info about carto/geo/topo/hydrography, and much more global geo-related info. Sometime this year I will put a link to your site at: http://www.mapvision.eu/node/m…
Best regards, Peter.
Wed Sep 13, 2017 6:43 pm CEST

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Roland

Great job! Extremely useful, intuitive website, for research, education, or simply enjoying free time!
Wed Oct 11, 2017 10:53 am CEST

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Robin

The projection you call "Hammer-Cylindrical" is obviously not cylindrical. Some info on the source/derivation would be useful.

In that vein... This is a very useful website, but from a professional standpoint, it would help if there more citations to sources, esp. for some of the more esoteric projections.
Mon Nov 13, 2017 6:54 am CET   –    One Reply

Tobias Jung

The Hammer-Cylindrical is a mix of the Hammer and the cylindrical equal-area projections.
It was made using Flex Projector, I grabbed it from the gallery of that application:
http://flexprojector.com/galle…
I don’t know how it was mixed exactly, since FP offers a few options.

About the sources and citations: Good point!
I’m going to add more information, but I’ll do it bit by bit as time goes by.

Thank you for you comment and suggestion!
Mon Nov 13, 2017 12:04 pm CET

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Clinton

Hi Tobias

Great website! Quick question... what is meant by 'compromise', under the property column - for some projections?

Thanks
Wed Aug 14, 2019 5:41 pm CEST   –    One Reply

Tobias Jung

Hello,
thank you! :-)
Quick answer: The term „compromise“ refers to projection that is neither equal-area, nor conformal or equidistant.
For more information about these properties, see:
https://map-projections.net/pr…

Hope this helps!
Wed Aug 14, 2019 6:08 pm CEST

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Rick

Fantastic project! Very professional and well executed. Keep up the good work. Sehr gut und mit Belehrung gelesen!
Mon Mar 16, 2020 5:32 am CET

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Liam

Except, the surface of the world is not spherical or even convex in the slightest. There is no measurable curve at all. Also,the world is stationary and does not move at all. It is the Sun etc that moves in the sky above the stationary world below. https://ibb.co/7W3sSZS https://ibb.co/w79B7b2 https://ibb.co/j6FZqcb
Sun July 19, 2020 8:41 am CEST   –    One Reply

Tobias Jung

Feel free to believe that.
Sun July 19, 2020 1:43 pm CEST

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Jean Gardner

Greetings,
I found my way to your very informative website because I am interested in Bucky Fuller's Dymaxion Map. I am wondering if you know of any digital developments of this map that allow for folding and other manipulations to reveal relationships not otherwise evident.

Please respond even if you don't know. That way I will know you received you question.
Much Thanks, Jean Gardner
Wed Aug 12, 2020 9:18 pm CEST

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Weia Reinboud

Here is the Cupola: https://www.tandfonline.com/ep…

Nice site of you, I know it. I am not a cartographer too!

Greetz, Weia
Fri May 14, 2021 8:20 pm CEST   –    One Reply

Alexandre Canana

Mrss Reinbound, I really like your Cupola Projection! I really like it's distribution of distortion and it's outer shape!
Wed Jan 12, 2022 2:28 pm CET

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Stefan Korf

Hello and moin,
I have a question, I could find out how it works, I read the papers but I am no good at either math and coding.
I have a map of a world from the german micro/virtual nations and it's in wagner VII and I would really love to get my hands on a merkator projection to put it on a globe/3D object.
It's a vectorgraphic but I am just unable to get it to work, or even how to start.
I.E.: How to get something like this: https://map-projections.net/d3…
Actually, doesn't need to be interactive at all.
Fri Jan 28, 2022 10:28 pm CET   –    One Reply

Alexandre Canana

One of my favourite map projection sites! Really great and everything is written in a way that is appealing to a layman or someone who's not especially good at maths!
Sat Feb 05, 2022 6:09 pm CET

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Henrique Koehler

I'm missing the WatchRose projection:
http://www.watchrose.de or http://www.watchrose.com

Henrique
Mon Apr 25, 2022 11:12 am CEST

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Mike Elstermann, the #geoObserver

THY! Super Job!
Today in the #geoObserver, see: https://geoobserver.wordpress.…
Mon May 02, 2022 8:25 am CEST

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Alexandre Canana

Mr Jung, are you going to add more information about each projection shown here?
Tue May 24, 2022 6:22 pm CEST   –    3 replies

Tobias Jung

I might add bits of information now and then, but probably never for each projection.
The time I can put into the site is limited, and about a bunch of projections, I know next to nothing.
Tue May 24, 2022 6:40 pm CEST

Alexandre Canana

You could always seek help from some of those great books like Flattening the Earth... But it's your site, you do whatever you want.
Tue May 24, 2022 7:01 pm CEST

Alexandre Canana

A wonderful site, I should add!
Tue May 24, 2022 7:32 pm CEST

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Ryan Air

This is such a nice website really! I had used this with a few of my friends to work on our upcoming project about Mercator's projection, and by exploring the website I realised that this is some sort of passion project which has been regularly worked upon since 2015! I find that so so cool, I hope you continue working on this for as long as possible, it was really great going through this website, and I'll be sure to check in every few weeks. :)
Mon Mar 13, 2023 6:28 pm CET   –    One Reply

Tobias Jung

Thanks for the praise, glad you like the site!
And yes, this IS a passion project, and I wish I could devote more time to it.
Tue Mar 14, 2023 1:38 am CET

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Jennifer DuFault

Hi! I teach world history, and my department as said we can buy maps, but they can't use the Mercator projection. I can't find any historical maps (the Roman Empire, world trade in 1500, the Hellenistic world, etc) that don't use Mercator. Is there any way this site can help convert Mercator projections of historical maps into more accurate projections? Or do you know of any source for the kinds of maps I'm looking for? Thanks!
Thu Sep 14, 2023 8:01 pm CEST

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