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By Miljenko Lapaine, E. Lynn Usery (eds.)

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Robinson and The Committee on Map Projections Fig. 8 The Berghaus star projection Fig.

Compare c and d with a in Fig. 12. Projections that maintain correct angles in every direction at each point are called conformal or orthomorphic. Both terms imply correct shape (and direction), but in practical application those qualities are limited to very small areas. Conformal maps are important tools for navigational, scientific, and technical purposes. Areas and sizes are greatly distorted on conformal projections of the whole world, and maps on those projections are not suitable for general use.

31, is often used for general world maps. An analysis of its graticule provides abundant evidence of why it is an unsuitable choice. Characteristics (2), (3), (4), and (6) are retained, so one can assume that the angles and areas in the equatorial regions are quite well displayed. On the other hand, meridians obviously do not converge (1), so the higher latitudes must be greatly distorted. Parallels are not spaced equally on meridians (5), but become increasingly farther apart toward the higher latitudes.

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