May 2019
Beginner to intermediate
650 pages
14h 50m
English
Content preview from Learn D3.js
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Types of projections
The three basic cartographical projections project the surface a sphere or ellipsoid onto a developable surface: any surface that can be flattened onto a plane without stretching or compressing. These surfaces are: the plane, the cylinder and the cone, illustrated in the following screenshot:
Typical azimuthal, cylindrical and conic projections of a sphere on a developable surface.
There are many ways to project a sphere onto these surfaces. They can touch the surface at one tangent point (a pole, in polar azimuthal projections) or a tangent line (the equator, in normal cylindrical projections; a parallel, in conic projections). ...
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