Geometric Projections of the Sphere and the Spheroid

Published in: The Canadian Geographer, v. 3, Autumn 1961, p. 12-21

Posted on on January 01, 1961

by Richard C. Kao

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Geometric projections have become increasingly important for the purpose of processing geographic (locational) data. A general theory is presented here whereby all mapping equations may be simply derived from one fundamental principle, that of the preservation of incidence relation together with the choice of an appropriate mapping basis (i.e. co-ordinate system).

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