South-up map orientation
South-up map orientation places the labeling on a map so that south is up, north is down, east is left and west is right. Thus the Southern Hemisphere appears at the top of the map instead of the usual bottom. Maps in this orientation are sometimes called upside down maps or reversed maps.
Because orienting north toward the top is a matter of convention rather than correctness, a south-up map is technically just as correct as north-up. Such maps have been made in several cultures and time periods, as have other orientations. The convention of orienting north to the top (and thus east to the right) probably was established by the astronomer Ptolemy. In modern times, south-up maps are made as a learning device or to illustrate Northern Hemisphere bias. Beyond just turning a north-up map upside down, a south-up map has the text oriented to be read with south up. South-up maps often have Indonesia placed in the center while Europe and the Americas are placed to the sides, although there are south-up maps centered on the Prime Meridian.
A map's orientation is a trivial technical matter and therefore the cartographic literature barely discusses it. As a psychological matter, however, at least one study suggests that the prevailing north-up convention has influenced people to think of north as "good" and south as "bad".
In popular culture
The famous "Blue Marble" photograph of the Earth taken from on board Apollo 17 was originally oriented with the south pole at the top, with the island of Madagascar visible just left of center, and the continent of Africa at its right. However, the image was rotated to fit the traditional view.
South-up maps are commonly available as novelties or sociopolitical statements in southern hemisphere locales, particularly Australia.
- South-up map centered on the Prime Meridian Flourish.org
- Meier, Brian P.; Moller, Arlen C.; Chen, Julie J.; Riemer-Peltz, Miles (2011). "Spatial Metaphor and Real Estate: North-South Location Biases Housing Preference". Social Psychological and Personality Science 2 (5): 547. doi:10.1177/1948550611401042.
- "Worth a thousand worlds". Geek Trivia (TechRepublic). 2005-12-06. Archived from the original on 2012-06-29. Retrieved 2007-06-23.
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