Jump to content

 
Photo

What projection is this?

- - - - -

  • Please log in to reply
9 replies to this topic

#1
frax

frax

    Hall of Fame

  • Associate Admin
  • PipPipPipPipPipPipPip
  • 2,312 posts
  • Gender:Male
  • Location:Stockholm, Sweden
  • Interests:music, hiking, friends, nature, photography, traveling. and maps!
  • Sweden

Hi,

Can anyone shed some light on this - I am just curious what projection this is: Posted Image

I have feeling that it is an interrupted projection... It is not polar stereographic or lambert azimuthal equal area at least.
Hugo Ahlenius
Nordpil - custom maps and GIS
http://nordpil.com/
Twitter

#2
Hans van der Maarel

Hans van der Maarel

    CartoTalk Editor-in-Chief

  • Admin
  • PipPipPipPipPipPipPip
  • 3,887 posts
  • Gender:Male
  • Location:The Netherlands
  • Interests:Cartography, GIS, history, popular science, music.
  • Netherlands

Hard to say without seeing grid lines. It could be an azimuthal projection, but conic (interrupted or not) is a distinct possibility too. I leafed through Snyder's 'An Album Of Map Projections' and didn't see anything obvious. It does look like New Zealand is too close to Australia though...
Hans van der Maarel - Cartotalk Editor
Red Geographics
Email: hans@redgeographics.com / Twitter: @redgeographics

#3
CHART

CHART

    Chart

  • Validated Member
  • PipPipPipPipPip
  • 358 posts
  • No Country Selected

seems to me like a 'cut and past' layout.
Chart

#4
mdsumner

mdsumner

    Key Contributor

  • Validated Member
  • PipPipPip
  • 96 posts
  • Australia

Looks to me like Buckminster Fuller's Spaceship Earth aligned to put Africa and Europe at front and centre, jiggered to make it more symmetrical, and with Antarctica forgotten. . . .

http://bfi.easystore...ps/list.htm?1=1

More links:

http://en.wikipedia....ki/Dymaxion_map

http://www.westnet.c...alt/unfold.html

http://www.geni.org/...rojection.shtml

#5
frax

frax

    Hall of Fame

  • Associate Admin
  • PipPipPipPipPipPipPip
  • 2,312 posts
  • Gender:Male
  • Location:Stockholm, Sweden
  • Interests:music, hiking, friends, nature, photography, traveling. and maps!
  • Sweden

The Dymaxion/Fuller projection looks quite similar, but then you would have Africa aligned a bit differently. I have a feeling it is one of these interrupted projections where the world is split into four cloverleafs.
Hugo Ahlenius
Nordpil - custom maps and GIS
http://nordpil.com/
Twitter

#6
Hans van der Maarel

Hans van der Maarel

    CartoTalk Editor-in-Chief

  • Admin
  • PipPipPipPipPipPipPip
  • 3,887 posts
  • Gender:Male
  • Location:The Netherlands
  • Interests:Cartography, GIS, history, popular science, music.
  • Netherlands

It does kinda look like the Pierce Quincuncial Projection, which sort of matches that description.

Just wondering, where did you find the map?
Hans van der Maarel - Cartotalk Editor
Red Geographics
Email: hans@redgeographics.com / Twitter: @redgeographics

#7
frax

frax

    Hall of Fame

  • Associate Admin
  • PipPipPipPipPipPipPip
  • 2,312 posts
  • Gender:Male
  • Location:Stockholm, Sweden
  • Interests:music, hiking, friends, nature, photography, traveling. and maps!
  • Sweden

Thanks Hans - it is close, but it does not seem to be the correct one. I overlaid this Pierce Q map with the map I found, and they don't match. The Pierce Q projection seems to distort the shape of Africa more. I also tried with another similar projection August's Conformal Projection of the Sphere on a Two-Cusped Epicycloid but neither that matched...

The map is from a backdrop from the Swedish Institute of International Affairs web-site.
Hugo Ahlenius
Nordpil - custom maps and GIS
http://nordpil.com/
Twitter

#8
frax

frax

    Hall of Fame

  • Associate Admin
  • PipPipPipPipPipPipPip
  • 2,312 posts
  • Gender:Male
  • Location:Stockholm, Sweden
  • Interests:music, hiking, friends, nature, photography, traveling. and maps!
  • Sweden

by the way - I thought you were joking first Hans, when you mentioned the Pierce Quincuncial projection - sounded a bit like the van der Maarel Whimsical projection.

And... I found it quite curious/interesting in that Pierce Q projection, when one looks at the maps, that New Zeeland gets separated to sit in an almost empty quarter-globe cloverleaf by itself (and ocean). It looks to like one would need to nudge the center of the projection 20 degs to the east to get Australia and NZ on the same leaf, but then Africa would be split up...
Hugo Ahlenius
Nordpil - custom maps and GIS
http://nordpil.com/
Twitter

#9
Hans van der Maarel

Hans van der Maarel

    CartoTalk Editor-in-Chief

  • Admin
  • PipPipPipPipPipPipPip
  • 3,887 posts
  • Gender:Male
  • Location:The Netherlands
  • Interests:Cartography, GIS, history, popular science, music.
  • Netherlands

by the way - I thought you were joking first Hans, when you mentioned the Pierce Quincuncial projection - sounded a bit like the van der Maarel Whimsical projection.


If I ever devise a projection, I know what to call it ;)
Hans van der Maarel - Cartotalk Editor
Red Geographics
Email: hans@redgeographics.com / Twitter: @redgeographics

#10
CHART

CHART

    Chart

  • Validated Member
  • PipPipPipPipPip
  • 358 posts
  • No Country Selected

So gentlemen what is this 'Fancy' 'Projection' called?
Chart




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

-->