Archetype (cartography)
In mathematical cartography and geodesy , the archetype is the surface of the body that is to be projected onto a plane or other regular surface.
Mostly this archetype is a sphere - the earth globe , a unit sphere ( radius = 1), the sphere of the starry sky . Instead of the globe, the earth ellipsoid has to be used with accuracies from 0.3 percent (with usual maps and in navigation this is already somewhat less precise than cartometry with a good scale or protractor ) .
The measuring accuracy of the geodesy is up to , i.e. at least 0.001% - which is why the "archetype of the geodesics must always be an ellipsoid or the geoid . The" unevenness "(i.e. mountains and valleys, sea depths and buildings ) are" leveled "beforehand - which makes the reference to the first, "baroque" point of view.
