Definitions for

**"Contour Line"****Related Terms:**Contour lines, Contour , Contour map, Contour interval, Isoline, Datum, Geodetic control, Geodetic survey, Topographic map, Planimetric map, Isobath, Surveying, Plot, Topographical map, Relief map, Line, Coordinate geometry, Lineament, Bench mark, Geodetic, Planimetric, Traverse, Topographic survey, Bar scale, Terrain , Hypsography, Vertical datum, Digital elevation model, Topographic, Base line, Principal meridian, Linear feature, Isohyet, Geodetic datum, Gage datum, Isopleth, Grid north, Meander line, Runway visual range, Topography, Metes and bounds, Georeferencing, Dem, Quadrangle, National geodetic vertical datum of 1929, Hachure, Point of beginning, Wgs, Wgs84

A line that defines the shape(s) of an object.

an imaginary line, or isoline, connecting points of equal elevation above some fixed level, or datum; used to represent 3D curved surfaces such as terrain

A line on a map that traces locations where the value of a variable is constant. For example, contour lines of elevation trace points of equal elevation across the map. All points on the “ten foot” contour line are ten feet above sea level.

a line on a map connecting points of equal elevation.

A line on a topographic map that represents a specific elevation.

A line drawn on a map representing points with equal value; on a topographic map contour lines represent points of equal elevation.

An imaginary line over terrain where all points of the line are the same elevation above (or below!) sea level. Used extensively on topo maps.

A line on a map or chart to connect all points of the same elevation or depth in a certain area. Different contour lines show changes in the elevation of the land.

Line on a map connecting points with equal elevation. The difference in value between two adjacent contour lines is known as the contour interval. Often the word contour is used when describing isolines.

A line on a map that joins points of equal elevation. Back

Line that connects points of equal elevation on a topographic map; contour lines are colored brown on USGS topographic maps.

Series of points at the same elevation on a surface

The lines on a map used to represent the elevation above sea level of the landscape at points lying along it. On USGS topographic maps these are in brown with the elevation of every fifth line being labeled.

a line on a topographic map that shows elevation above sea level

represented by a single line on a topographic map, this line shows elevation on land surface.It does this by connecting all the points on a land map that represent the same elevation.

A curve through places on a map where a measurement (for example, temperature, elevation, or length of growing season) is the same.

A line on a map representing an elevation contour.

the lines on a topographic map that show the relief or elevation of features.

A line that follows the edges or edge of a shape or form.

a line drawn on a map connecting points of equal height

a generalized representation of terrain showing differences in elevation

a line drawn to connect point of the same elevations

a line representing an imaginary line on the ground along which all points are at the same elevation

a line that connects points of equal elevation

a line that passes through points with the same elevation

an actual line which is drawn on a map

an imaginary line joining points on the ground which are the same height

an imaginary line on the Earth's surface connecting points of the same elevation

A line used on a topographic map to indicate areas of equal elevation above sea level

A line connecting all points of the same elevation on a part of the earth's surface, represented by a continuous line on a topographic map.

Line or set of points that represent the same value of an attribute. Commonly used for illustrating lines of the same elevation on a topographic map.

A term used to describe the visible edges of a blob. Contour lines are often used in negative sense to describe a photograph that doesn't have enough colors.

A line (as on a map) connecting points on a land surface that have the same elevation above or below sea level.

An imaginary line connecting a series of points on the surface of the ground which are all at the same reduced level; also the line representing this on a map or plan.

isoline on a field map connecting points of the same elevation

a line on a chart connecting points of equal depth or elevation.

generally, a line of constant value; in meteorology, typically refers to a line of constant elevation above a specified reference level (usually mean sea level)

A line connecting points, on a land surface or sea bottom, which have equal ELEVATION. It is called an ISOBATH when connecting points of equal DEPTH below a DATUM.

Line on a map which represents a contour or points of equal elevation.

a line used to represent the same value of an attribute (elevation or yield).

A line of equal elevation drawn on a plan. For example, a contour line labeled "510" means that everywhere along that line is 510 feet above mean sea level.

Lines connecting points of equal elevation.

An imaginary line, or its representation on a map, following all points at the same elevation above or below a given datum.

(Also called contour, isohypse, isoheight.) A line of constant elevation above a certain reference level (usually mean sea level) on a previously defined surface, which may be the earth's surface, a constant-pressure surface, an isentropic surface, etc. A contour line of a given value is the intersection of the surface in question with the constant- height surface of the same elevation as the value of the contour line. In meteorology, a contour line frequently refers to a line of constant height on a constant-pressure chart. Compare isobar.

(n) A line that represents the independent variable (X,Y) combinations that result in a constant dependent variable value (also called an isoline). A contour line can also represent the juncture between two surfaces of differing orientations or depths. In this definition, a contour line is an alternate term for edge.

A contour line shows elevation. A contour line (also level set, isopleth, isoline, isogram or isarithm) for a function of two variables is a curve connecting points where the function has a same particular value. A contour map is a map illustrated with contour lines, for example a topographic map.

a two-dimensional curve on which the value of a function is a constant

a typical example of this type of curve