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What is a conic map projection?

What is a conic map projection?

conic projection. [ kŏn′ĭk ] A map projection in which the surface features of a globe are depicted as if projected onto a cone typically positioned so as to rest on the globe along a parallel (a line of equal latitude).

What is an example of conic projection?

Examples of some conic projections are: Albers Equal Area Conic, Equidistant Conic, Lambert Conformal Conic, and Polyconic (one of the more common). Azimuthal Projections. Azimuthal projections result from projecting a spherical surface onto a plane.

What is a conic projection used for?

Conic projections are used for midlatitude zones that have an east–west orientation. Somewhat more complex Conic projections contact the global surface at two locations. These projections are called Secant projections and are defined by two standard parallels.

What are the characteristics of a conic projection?

General characteristics

  • Lines of latitude and longitude are intersecting at 90 degrees.
  • Meridians are straight lines.
  • Parallels are concentric circular arcs.
  • Scale along the standard parallel(s) is true.
  • Can have the properites of equidistance, conformality or equal area.
  • The pole is represented as an arc or a point.

Are conic projections accurate?

Like all projections, the Albers Equal Area Conic Projection has map distortion. Distances and scale are true only on both standard parallels with directions being reasonably accurate. Areas are equal to the same areas on Earth, though it’s not conformal, perspective, or equidistant.

What is a conic projection quizlet?

used for mid-latitudes. Secant Conic Projections. A projection whose surface intersects the surface of a globe. A secant conic or cylindrical projection, for example, is recessed into a globe, intersecting it at two circles. At the lines of intersection, the projection is free from distortion.

What are disadvantages of a conic map?

Like all projections, the Albers Equal Area Conic Projection has map distortion. Distances and scale are true only on both standard parallels with directions being reasonably accurate.

How do you use conic projection in a sentence?

conic projection in a sentence

  1. The Albers equal-area conic projection features no distortion along standard parallels.
  2. It was subject to a Lambert conformal conic projection, and given appropriate markup.
  3. Most state plane zones are based on either a transverse Mercator projection or a Lambert conformal conic projection.

Do pilots use conic projection?

Pilots use aeronautical charts based on LCC because a straight line drawn on a Lambert conformal conic projection approximates a great-circle route between endpoints for typical flight distances. The National Spatial Framework for India uses Datum WGS84 with a LCC projection and is a recommended NNRMS standard.

What is the best projection for a world map?

AuthaGraph. This is hands-down the most accurate map projection in existence. In fact, AuthaGraph World Map is so proportionally perfect, it magically folds it into a three-dimensional globe. Japanese architect Hajime Narukawa invented this projection in 1999 by equally dividing a spherical surface into 96 triangles.

What are the disadvantages of conical projections?

Conic Projection Advantages and Disadvantages Unlike cylindrical maps, conic map projections are generally not well-suited for mapping very large areas. They are more suitable for mapping continental and regional areas.

What is the downside of a conic map?