In case of a cylindrical projection the surface of the sphere will be mapped to a (secant, tangent) rotation cylinder which then will be unwinded onto the plane. Thereby the projection axis is equal to the axis of the rotation cylinder.
The cylindrical projection is a true projection. Conformal, equidistant and equal-area cylindrical projections can be constructed (see e.g. [3] under literature).
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Derivation of cylindrical projections |
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standard parallels |