Orthographic Projection (Cartography)
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. An orthographic projection is a map projection of cartography. Like the stereographic projection and gnomonic projection, orthographic projection is a perspective (or azimuthal) projection, in which the sphere is projected onto a tangent plane or secant plane. The point of perspective for the Orthographic projection is at infinite distance. It depicts a hemisphere of the globe as it appears from outer space, where the horizon is a great circle. The shapes and areas ar...
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. An orthographic projection is a map projection of cartography. Like the stereographic projection and gnomonic projection, orthographic projection is a perspective (or azimuthal) projection, in which the sphere is projected onto a tangent plane or secant plane. The point of perspective for the Orthographic projection is at infinite distance. It depicts a hemisphere of the globe as it appears from outer space, where the horizon is a great circle. The shapes and areas are distorted, particularly near the edges, but distances are preserved along parallels (Snyder 1987, 1993). Orthographic projection was called "analemma" by the Greeks (see Ptolemy). The current name was adopted in 1613 by François d''Aiguillon of Antwerp, though it is thought to originate from the Roman writer and architect Vitruvius. Albrecht Dürer prepared the first known polar and equatorial Orthographic maps of the Earth. Photographs of the Earth and other planets from spacecraft have inspired renewed interest in the Orthographic projection in astronomy and planetary science.
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