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B.J.S CAHILL'S BUTTERFLY MAP AND BEYOND:
A COMPARATIVE GALLERY OF OCTAHEDRAL WORLD MAPS
Compiled by Gene Keyes
1976 Lee Conformal
Date
Author
This scale
<— Source
<— % change
1976
L.P. Lee
1/200 M
1/204 M
102%

Type

Aspect

Defining
Meridian


Geocells


Original size
Conformal
N. Atlantic
20°
10°
197 x 113 mm
Remarks:
More an academic exercise illustrating conformal formulas; no discussion on the merits of a Cahill octrahedral map. Wrongly attributes the Butterfly Map to Oscar S. Adams, who only computed a conformal version at Cahill's request, some 20 years after Cahill had invented  it
Source (print)
L.P. Lee, "Conformal Projections Based on Elliptic Functions" (Cartographica, Monograph No. 16, Supplement No. 1 to Canadian Cartographer, v. 13, 1976) p. 61
Source (online: page title & link)
This page:
http://www.genekeyes.com/CAHILL_GALLERY/1976-Lee-Conformal.html
Source (online: item link)
This page:
http://www.genekeyes.com/CAHILL_GALLERY/1976-Lee-Conformal.jpg

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2007-06-05