If the inverse generating projection of a map projection, Q, is composed with the surface geodetic CS generating function, , the resulting function, , is the generating function of a surface CS (see Figure 5 .4). The CS domain is the MP range. In this International Standard, a map projection CS shall be surface CS for which the generating function is (implicitly) specified in terms of map projection mapping equations.
Figure 5.4 — The generating function of a map projection
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