azimuthal projection - ορισμός. Τι είναι το azimuthal projection
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Τι (ποιος) είναι azimuthal projection - ορισμός

REPRESENTATION OF THE SURFACE OF A SPHERE OR ELLIPSOID ONTO A PLANE MAP
Pseudocylindrical; Pseudo-cylindrical projection; Cylindrical projection; Conic projection; Pseudo-conic projection; Azimuthal projection; Map projections; Projection (cartography); Map Projection; World projection; Retroazimuthal projection; Conical projection; Spherical projection; Cartographic projection; Conic projector; Cartographic projections; Spatial projection; Pseudoconic; Transverse aspect; Central meridian (map projections); Cylindrical map projection; Coniform projection; Standard line; Standard parallel (map projections); Equidistant map projection; Pseudoconical projection; Pseudocylindrical map projection; Equal Area Cylindrical; Equal-area cylindrical projection; Near-sided perspective projection; Equidistant projection; Pseudocylindrical projection
  • ''Geography'']] and using his second map projection
  • Cylindrical equal-area projection with oblique orientation
  • Buckminster Fuller's Dymaxion map
  • 200px
  • 200px
  • 200px
  • 200px
  • 200px
  •  The equal-area [[Mollweide projection]]
  • Tissot's Indicatrices on the [[Mercator projection]]
  • 200px
  • A [[two-point equidistant projection]] of Eurasia
  • An [[Albers projection]] shows areas accurately, but distorts shapes.
  • Albers conic
  • An azimuthal equidistant projection shows distances and directions accurately from the center point, but distorts shapes and sizes elsewhere.
  • The [[Gnomonic projection]] is thought to be the oldest map projection, developed by [[Thales]] in the 6th century BC
  • The Mercator projection shows [[rhumbs]] as straight lines. A rhumb is a course of constant bearing. Bearing is the compass direction of movement.
  • A [[Miller cylindrical projection]] maps the globe onto a cylinder.
  • Winkel tripel]].
  • interrupting]]" the map.
  • A [[stereographic projection]] is conformal and perspective but not equal area or equidistant.
  • This [[transverse Mercator projection]] is mathematically the same as a standard Mercator, but oriented around a different axis.

azimuthal projection         
[?az?'mju:?(?)l]
¦ noun a map projection in which a region of the earth is projected on to a plane tangential to the surface, usually at a pole or the equator.
Lambert azimuthal equal-area projection         
  • The Lambert azimuthal equal-area projection with [[Tissot's indicatrix]] of deformation.
  • Animation of a Lambert projection. Each grid cell maintains its area throughout the transformation. In this animation, points on the equator remain always on the <math>z=0</math> plane.
  • In this animated Lambert projection, the south pole is held fixed.
  • cross section]]al view of the sphere and a plane tangent to it at ''S''. Each point on the sphere (except the antipode) is projected to the plane along a circular arc centered at the point of tangency between the sphere and plane.
MAP PROJECTION
Lambert azimuthal projection; Azimuthal equal-area projection; Lambert net; Schmidt plot; Lambert asimuthal projection; LEAA projection; Lambert Azimuthal Equal Area; Lambert azimuthal equal area; Azimuthal equal area; Laea; Lambert azimuthal map projection
The Lambert azimuthal equal-area projection is a particular mapping from a sphere to a disk. It accurately represents area in all regions of the sphere, but it does not accurately represent angles.
Azimuthal equidistant projection         
  • An azimuthal equidistant projection about the [[North Pole]] extending all the way to the [[South Pole]].
  • An azimuthal equidistant projection about the [[South Pole]] extending all the way to the [[North Pole]].
  • Emblem of the [[United Nations]] containing a polar azimuthal equidistant projection.
  • An azimuthal equidistant projection centered on Sydney
  • their different missiles]].
AZIMUTHAL MAP PROJECTION
Polar map; Postel projection; Polar projection; AE map; AE projection
The azimuthal equidistant projection is an azimuthal map projection. It has the useful properties that all points on the map are at proportionally correct distances from the center point, and that all points on the map are at the correct azimuth (direction) from the center point.

Βικιπαίδεια

Map projection

In cartography, a map projection is any of a broad set of transformations employed to represent the curved two-dimensional surface of a globe on a plane. In a map projection, coordinates, often expressed as latitude and longitude, of locations from the surface of the globe are transformed to coordinates on a plane. Projection is a necessary step in creating a two-dimensional map and is one of the essential elements of cartography.

All projections of a sphere on a plane necessarily distort the surface in some way and to some extent. Depending on the purpose of the map, some distortions are acceptable and others are not; therefore, different map projections exist in order to preserve some properties of the sphere-like body at the expense of other properties. The study of map projections is primarily about the characterization of their distortions. There is no limit to the number of possible map projections.: 1  More generally, projections are considered in several fields of pure mathematics, including differential geometry, projective geometry, and manifolds. However, the term "map projection" refers specifically to a cartographic projection.

Despite the name's literal meaning, projection is not limited to perspective projections, such as those resulting from casting a shadow on a screen, or the rectilinear image produced by a pinhole camera on a flat film plate. Rather, any mathematical function that transforms coordinates from the curved surface distinctly and smoothly to the plane is a projection. Few projections in practical use are perspective.

Most of this article assumes that the surface to be mapped is that of a sphere. The Earth and other large celestial bodies are generally better modeled as oblate spheroids, whereas small objects such as asteroids often have irregular shapes. The surfaces of planetary bodies can be mapped even if they are too irregular to be modeled well with a sphere or ellipsoid. Therefore, more generally, a map projection is any method of flattening a continuous curved surface onto a plane.

The most well-known map projection is the Mercator projection.: 45  This map projection has the property of being conformal. However, it has been criticized throughout the 20th century for enlarging regions further from the equator.: 156–157  To contrast, equal-area projections such as the Sinusoidal projection and the Gall–Peters projection show the correct sizes of countries relative to each other, but distort angles. The National Geographic Society and most atlases favor map projections that compromise between area and angular distortion, such as the Robinson projection and the Winkel tripel projection.