Definitions for

**"Map projection"****Related Terms:**Projection, Ellipsoid, Spheroid, Mercator projection, Coordinate systems, Tin, Graticule, Triangulated irregular network, Grid north, Aspect, Perspective projection, Central meridian, Universal transverse mercator, Surface, Coordinate pair, Conic projection, Georeferencing, Orthographic projection, Datum, Cogo, Conformal projection, Geodetic, Utm, Geodetic survey, Equidistant, State plane coordinate system, Geodetic coordinates, Sphere, Compass rose, Geographic coordinates, Quadric, Coordinate geometry, Geometry, Geodetic datum, Relief map, Conformal, Contour , Coordinate system, Linear perspective, Conformality, Geodetic control, Cylindrical projection, Geographic coordinate system, Bar scale, Map scale, Surveying, Coordinates, Easting, Plot, Principal meridian

a mathematical formula for converting points on a sphere, such as the earth, onto a plane, such as a flat map

The method used to convert the spherical shape of the earth onto the plane of a map.

Any systematic arrangement of meridians and parallels portraying the curved surface of a sphere or spheroid upon a plane.

A direct geometric function or mathematical transformation which relates coordinates of points on a curved surface to coordinates of points on a plane.

A mathematical formula that transforms feature locations between the earth's curved surface and a map's flat surface. A projected coordinate system includes the information needed to transform locations expressed as latitude and longitude values to x, y coordinates. Projections cause distortions in one or more of these spatial properties--distance, area, shape, and direction.

Representation or method or representing all or part of the surface of a sphere or spheroid, such as the Earth, upon a plane surface.

a projection of the globe onto a flat map using a grid of lines of latitude and longitude

a formula by which streets and points on the surface of the earth are located on a map

a mathematical model for conversion of locations from a three-dimensional earth surface to a two-dimensional map representation

a method for representing a curved surface, such as the surface of the earth, on a flat surface, such as a piece of paper, so that each point on the curved surface corresponds to only one point on the flat surface

a method of showing the Earth's surface on a map that least distorts or changes the shape, area, distance, and direction of features on a globe

a method of translating the three dimensional coordinates of a globe onto a plane such as a sheet of paper or computer screen

a one to one mapping (in the mathematical sense) of points on the curved surface to points on the plane

a procedure or mathematical formula to transform a curved surface onto a plane

a specific way of transferring points or locations from a spherical globe onto a scaled-down flat surface (the map) according to a systematic, orderly realignment, using a latitude/longitude grid network

a systematic representation

a system for changing the curved/spherical geographic grid to a flat grid

a system of lines on a planar surface that represents a corresponding referencing system or datum

a way to show a drawing of the earth on a flat surface

A mathematical model for converting locations on the earths surface from spherical to planar coordinates, allowing flat maps to depict three dimensional features. Some map projections preserve the integrity of shape; others preserve accuracy of area, distance, or direction.

Portrayal of geographic features from the curved surface of the earth onto a flat plane.

the systematic arrangement of the earth's spherical or geographic coordinate system onto a plane; the process of transforming a globe into a flat map with the least amount of distortion; a transformation process. There are several different projection processes which may be used depending on the area to be mapped and other factors.

The representation of the speroidal surface of the earth on a flat surface. The mathematical algorithms used to effect the transformation depend on the specific purpose required, such as preservation of shape, correct area, direction, etc

Orderly system of lines on a plane representing a corresponding system of imaginary lines on an adopted terrestrial or celestial datum surface. Also, the mathematical concept for such a system. For maps of the Earth, a projection consists of 1) a graticule of lines representing parallels of latitude and meridians of longitude or 2) a grid.

any map that attempts to take the spherical (ball) shape of the Earth and represent it as a flat image. All atlases and paper maps do this.

mathematical model that transforms the location of features on the earth's surface to locations on a two- dimensional surface.

A mathematical model used to convert three dimensional reality into two dimensions for representation on a map, or within a two dimensional GIS database. All map projections have particular strengths, some preserve shape, other preserve distance, area and direction. All projections have limitations, however, of which you should be aware.

A systematic conversion of geographic locations from spherical to planar coordinates.

A particular way (such as UTM) of depicting the curved surface of the Earth as a two-dimensional map through the use of a specific mathematical algorithm.

Method for representing all or part of the earth's surface on a flat sheet.

Any systematic arrangement of the meridians and parallels (graticule) of the allside curving of a sphere or spheroid, or a part of such a figure, on a plane surface.

systematic drawing of lines of a plane surface to represent the parallels of latitude and the meridians of longitude of the Earth.

Cartographic process used to represent the Earth's three-dimensional surface onto a two-dimension map. This process creates some type of distortion artifact on the map.

A depiction of the earthâ€™s three-dimensional structure on a flat map.

A map projection is any method used in cartography (mapmaking) to represent the two-dimensional curved surface of the earth or other body on a plane. The term "projection" here refers to any function defined on the earth's surface and with values on the plane, and not necessarily a geometric projection.

See projection.

See projections.