Development and Implementation of a Procedure for Automated Map Projection Selection

Abstract

The increased accessibility of geographic information systems (GIS) and mapping software to inexperienced users brings with it the risk that the suitability of a map may be diminished through the choice of an inadequate map projection. Clearly some guidelines on choosing the right map projection are necessary in order to assist the user to portray data in such a way as not to hamper the message the map is meant to transmit. A review of some of the better known existing selection schemes for small-scale map projections emphasizes the need for the development of a procedure for automated map projection selection. This article presents a procedure for an application-dependent choice of map projection suitable for implementation in a digital environment. Selection is based on the specification of map projection features relevant to the application. Optimization of the graticule of the selected projection guarantees minimum visual distortion.

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