Stereographic projection
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In mathematics, a stereographic projection is a perspective projection of the sphere, through a specific point on the sphere, onto a plane perpendicular to the diameter through the point. It is a smoo
Illustration by Rubens for "Opticorum libri sex philosophis juxta ac mathematicis utiles", by François d'Aguilon. It demonstrates the principle of a general perspective projection, of which the stereographic projection is a special case.
The sphere, with various loxodromes shown in distinct colors
Two points P1 and P2 are drawn on a transparent sheet tacked at the origin of a Wulff net.
The transparent sheet is rotated and the central angle is read along the common meridian to both points P1 and P2.
Stereographic map projection
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The stereographic projection, also known as the planisphere projection or the azimuthal conformal projection, is a conformal map projection whose use dates back to antiquity. Like the orthographic pro
Stereographic projection
…Poincaré disk model, the analogous mapping of the hyperbolic plane Stereographic projection in cartography Curvilinear perspective…
Stereographic projection of the world north of 30°S. 15° graticule.