Method and system for earth globe map projection and map obtained by said method

摘要

The present invention relates to a process for the cartographic projection of at least a portion of the terrestrial globe (1) in which it defines a projection cylinder containing the globe (1) or secant with it, and it projects the points of the globe, whose coordinates are defined by a longitude φ) and a latitude (theta), on the cylinder, by associating with each longitude (φ) an abscissa (x), at each latitude (theta) an ordinate (y), in a frame of reference of the developed cylinder (2), characterized by the fact that it is characterized by the fact that it is possible to determine a series of n + 1 angles of latitude (theta0,.., thetan), defining n (n & = 2) distinct ranges of latitudes, it divides each northern hemisphere) and / or south face of the globe (1) in n peripheral zones (4) of latitudes corresponding to the n ranges of the following description, each defined by two parallel (5, 6) of limit latitude, is projected parallel lines (5, 6) of limit latitude on to the projection cylinder and is projected each point (a) of one of the n areas (4) of latitudes at a point (a ') of the cylinder of the ordinate and interpolated between those of the parallels of limit latitude projected, as a function of the latitude (theta) relative to the point (a) between the two parallel (5, 6) .grâce to the invention is obtained a projection method is simple and without excessive computation.