Definitions
Three commonly used (but different) center points are:
- the mean center, also known as the centroid or center of gravity;
- the median center, which is the intersection of the median longitude and median latitude;
- the geometric median, also known as Weber point, Fermat–Weber point, or point of minimum aggregate travel.
A further complication is caused by the curved shape of the Earth. Different center points are obtained depending on whether the center is computed in three-dimensional space, or restricted to the curved surface, or computed using a flat map projection.
Read more about this topic: Center Of Population
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