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Geographical centre

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completely enclosing the area. While relatively easy to determine, a centre point calculated using this method will generally also vary (relative to the shape of the landmass or region) depending on the orientation of the bounding box to the area under consideration. In this sense it is not a robust
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finding the longitude that divides the region into two equal area parts to the east and west, and then similarly the latitude that divides the region into two equal area parts to the north and south. Like the bounding box approach described above this method would not generally locate precisely the
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One example of a refined approach using an azimuthal equidistant projection, also potentially incorporating an iterative process, was described by Peter A. Rogerson in 2015. The abstract says "the new method minimizes the sum of squared great circle distances from all points in the region to the
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In general, there is room for debate around various details such as whether or not to include islands and similarly, large bodies of water, how best to handle the curvature of the Earth (a more significant factor with larger regions) and closely related to that issue, which
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center". However, as that property is also true of a centroid (of area), this aspect is effectively just different terminology for determining the centroid.
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also used an iterative approach (and a variety of different projections) when determining a centre position for New Zealand's Extended Continental Shelf.
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document, "There is no generally accepted definition of geographic center, and no completely satisfactory method for determining it."
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However, other methods have also been proposed or used to determine the centres of various countries and regions. These include:
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centroid of volume (incorporating elevations into calculations), instead of the more usual centroid of area as described above.
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Rogerson, Peter A. (2015-10-02). "A New Method for Finding Geographic Centers, with Application to U.S. States".
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of the two-dimensional shape of a region of the Earth's surface (projected radially to sea level or onto a
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incorrectly led you here, you may wish to change the link to point directly to the intended article.
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includes a list of related items that share the same name (or similar names).
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same point if the same shaped region was oriented differently.
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Index

Geographical center
geography
centroid
geoid
GNS Science
bounding box
United States Geological Survey
map projection
Geographical centre of Earth
Axis mundi
Omphalos of Delphi
Geographic Centre of Uganda (Amolatar Monument)
Geographical midpoints of Asia
China
Russia
Geographical centre of India
Zero Mile Stone (Nagpur)
Geographic center of Iran
Geographic centre of Sri Lanka
Geographical centre of the Korean Peninsula
Geographical centre of the Philippines
Geographical centre of the Russian Federation
Geographical centre of the Soviet Union
Geographic center of Taiwan
Geographical midpoint of Europe
Geographical centre of Austria
Geographic center of Belarus
Geographical centre of Belgium
Geographical centre of Estonia
Geographical centre of Germany

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