Map Projection Types
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A map projection systematically projects locations from the surface of a spheroid to representative positions on a flat surface using mathematical algorithms.
Map projection types. Type of projection cylindrical in standard presentation these map regularly spaced meridians to equally spaced vertical lines and parallels to horizontal lines. Pseudocylindrical in standard presentation these map the central meridian and parallels as straight lines. Map projection types all have their pros and cons but they are incredibly versatile.
Even though it is nearly impossible to create an entirely accurate map projection there are uses for even the most imperfect depictions of the earth. Map projections are created for certain purposes and should be used for those purposes. Unlike conic projections the meridian is not constrained to be a straight line.
Examples of pseudoconic projections include bonne which is an equal area map projection. The maps are not constrained to rectangles or discs. Pseudoconic projection is one of the oldest map types and although they were used by ptolemy they are seldom seen today.
50 map projections types. Now that you have an arsenal of map projections its time to put what you know into action. Take a fresh approach to your next map because theres nothing quite like creating a work of art.
Map projections types and distortion patterns. The shape of the earth is represented as a sphere. It is also modeled more accurately as an oblate spheroid or an ellipsoid.
A globe is a scaled down model of the earth. Although they can represent size shape distance and directions of the earth features with reasonable accuracy globes are not. Map projections are often named after the mathematician or inventor responsible for arithmetic formula.
Today it is usually the job of the cartographer or editor to choose a suitable map projection taking into account the purpose of the map. A map projection is a systematic transformation of the latitudes and longitudes of locations from the surface of a sphere or an ellipsoid into locations on a plane. Maps cannot be created without map projections.
All map projections necessarily distort the surface in some fashion. There is no limit to the number of possible map projections. 1 projections are a subject of several pure.
Because maps are flat some of the simplest projections are made onto geometric shapes that can be flattened without stretching their surfaces. These are called developable surfaces. Some common examples are cones cylinders and planes.
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