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Coordinate operationsΒΆ

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Coordinate operations in PROJ are divided into three groups: +Projections, conversions and transformations. +Projections are purely cartographic mappings of the sphere onto the plane. +Technically projections are conversions (according to ISO standards), though in +PROJ projections are distinguished from conversions. Conversions are coordinate +operations that do not exert a change in reference frame. Operations that do +exert a change in reference frame are called transformations.

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