The amount of different types and variations of map projections is nowadays grown
up to more than
200. They vary in properties and usage:
- for the display of topographic
data maily conformal projections are used
- for thematic and statistical
data very often equivalent projections are used, or also equidistant.
- for navigation, conformal
projections are used. A very often used projection therefor is/was the
Mercator projection which also is keeping the lines of same azimuth (loxodrom) as straight
- For very small scale maps in publications
and for wall maps, often also composed projections
An overview of popular map projections is given in the following table. The main classification
done based on their deformation properties, and their mapping surface. Their main use is given.
Overview about often used map projections together with their extential main
use [Voser 2003].