Illustrated Glossary
Map projection


A map projection is the mathematical formula used in the process of transforming positions from the earth's three-dimensional curved surface to a two-dimensional flat surface. The positions on the earth are defined using spherical coordinates of latitude and longitude, usually given in degrees. On a map, the positions may still be defined by spherical coordinates, or by linear coordinates, usually given in metres.

Image for map projection

For more information on map projection, consult the Dictionary, Census of Population, 2021.

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