n
(geometry) A position directly opposite (possibly also used figuratively).
adj
(cartography) Of a map projection: Neither conformal or equal-area.
adj
(cartography) Of a map, equal-area.
adj
(technical drawing) Describing a projection in which the horizontal and vertical axes are to the same scale, but the third axis is reduced to allow for perspective
adj
(cartography) Describing a map projection which preserves direction for all points relative to a selected point (or in some cases two points).
n
A kind of pseudoconical equal-area map projection.
n
A kind of equal-area map projection, intended as an alternative to the Bonne projection that would reduce the extent of extreme distortion at the edges and give a more satisfying overall shape.
adj
(cartography) Describing a map projection in which meridians are mapped to equally spaced lines radiating out from the apex and parallels of latitude are mapped to circular arcs centred on the apex.
adj
(cartography) Describing a map projection in which meridians are mapped onto vertical lines and parallels of latitude onto horizontal lines.
adj
(cartography) Describing a map projection that preserves scale. No map can show scale correctly throughout the entire map but some can show true scale between one or two points and every point or along every meridian and these are referred to as equidistant.
adj
(cartography) Mapping meridians to equally-spaced vertical straight lines, and circles of latitude to evenly-spread horizontal straight lines.
adj
(cartography) Of a map, equal-area.
n
A form of cylindric equal-area map projection.
adj
(cartography) Showing all great circles as straight lines, and thus preserving the shortest distances between any two locations.
n
(cartography) A mapping projection in which all great circle paths (on a sphere the shortest path between points) are shown as straight lines.
adj
Alternative form of gnomonic [(cartography) Showing all great circles as straight lines, and thus preserving the shortest distances between any two locations.]
adj
(cartography) Being or employing a particular pseudocylindrical, equal-area, composite projection used for world maps.
n
(navigation) The locus of the points on the earth's surface whose orthodromic initial path with respect to a fixed point is constant.
n
(cartography, navigation) A line connecting points on the Earth's surface whose magnetic declination is identical.
n
(art, cartography) A type of visual perspective in which all dimensions parallel to the three principal spatial axes are shown in their true proportions.
n
(cartography) A map projection that is conformal and retroazimuthal.
n
(cartography) Any systematic method of transforming the spherical representation of parallels, meridians and geographic features of the Earth's surface to a nonspherical surface, usually a plane.
n
(chiefly attributive) Pertaining to an orthomorphic map projection, in which meridians appear at right-angles to the equator, and lines of latitude are horizontal lines whose distance from each other increases with distance from the equator.
adj
Of or relating to Gerardus Mercator, 16th-century Flemish cartographer who invented the Mercator projection.
n
(by extension) sphere of influence
n
The process of finding the position of a broadcast source by measuring its distance from other sources of known location
adj
Of or relating to a means of navigation by following an arc of the great circle corresponding to the shortest distance between two points on the globe.
adj
Of a projection used in maps, architecture etc., in which the rays are parallel.
adj
Obsolete form of orthographic. [Of a projection used in maps, architecture etc., in which the rays are parallel.]
n
(countable, architecture) A form of projection used to represent three-dimensional objects in two dimensions, in which all the projection lines are orthogonal or perpendicular to the projection plane; an orthographic projection, especially when used to draw an elevation, vertical projection, etc., of a building; also (obsolete) a drawing made in this way.
n
A quadrangle of orthophotos
n
(in an imaging system) A slice that is orthogonal to a particular plane
adj
(mathematics) Of a coordinate system, specifying the location of a point in a plane by using a radius and an angle.
n
A form of pie chart in which each sector has the same angle, the proportions being indicated by the radius of each sector
n
(cartography) Any of several systems of intersecting lines that allow the curved surface of the earth to be represented on a flat surface. The set of mathematics used to calculate coordinate positions.
adj
(cartography) Describing various map projections based on the azimuthal.
adj
(cartography) Representing the central meridian and each parallel as a single straight line segment, but not the other meridians.
adj
Alternative spelling of quadrupolar [Of or pertaining to a quadrupole]
n
The property of being spheral.
adj
Obsolete form of spheric. [Spherical.]
n
(geometry) A solid constructed by slicing a bicone with 90-degree apices through a plane containing both of them, rotating one half by 90 degrees, and reconnecting them; the resulting shape has a single continuous face, and two edges.
n
An object that could be remotely tracked through space and time.
n
(projective geometry, complex analysis, cartography) A function that maps a sphere onto a plane; especially, the map generated by projecting each point of the sphere from the sphere's (designated) north pole to a point on the plane tangent to the south pole.
n
(cartography) A mathematical contrivance used to characterize local distortions due to map projection. It is the geometry that results from projecting a circle of infinitesimal radius from a curved geometric model, such as a globe, onto a map.
adj
Relative to an observer; that is, relative to a point on the surface of the Earth; said of a frame of reference, of a coordinate system, or the like, or of motion or position within such.
n
(physics) The condition of four waves having the same wavelength and phase
n
A pseudoconic cordiform equal-area map projection that is a limiting form of the Bonne projection, having its standard parallel at one of the poles (90°N/S).
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