| B.J.S CAHILL'S BUTTERFLY MAP AND
BEYOND: A COMPARATIVE GALLERY OF OCTAHEDRAL WORLD MAPS Compiled by Gene Keyes |
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| Date |
Author |
This scale |
<— Source |
<— % change |
| [1962]; 1997 |
Richard E. Dahlberg |
1/200 M |
1/417 M |
208% |
Type |
Aspect |
Defining Meridian |
Geocells |
Original size |
| Equal-Area |
New World; Asia split |
22 1/2º W |
15 x 15º & 7 1/2 x 15º |
57 x 97 mm |
| Remarks: |
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| At least Cahill is mentioned, but this is a very small, very
poor remake of his map. (E.g., the assymetry of the octants, each of which
should be identical.) |
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| Source (print) |
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| *[see below] |
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| Source (online: page title & link) |
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| From Richard E. Dahlberg, "Interrupting the World Map", chap.
2 of online publication Matching the Map Projection to the Need,
Arthur H. Robinson and John P. Snyder, eds., © 1997, American Congress
on Surveying and Mapping
http://www.gis.psu.edu/projection/
http://www.gis.psu.edu/projection/chapter2.html * [cf. Dahlberg, "Evolution of Interrupted Map Projections" (International Yearbook of Cartography, vol. 2, 1962) p. 36-53] |
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| Source (online: item link) |
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|
http://www.gis.psu.edu/projection/images/2-1.gif |
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