GIS Dictionary

label

1 In cartography, text placed on or near a map feature that describes or identifies it. 2 ...

label point

In a coverage, a feature class used to represent points or identify polygons. When representing points, the x,y ...

lag

In the creation of a semivariogram, the sample distance used to group or bin pairs of points. Using ...

LAN

Acronym for local area network. Communications hardware and software that connect computers in a small area, such as a ...

land cover

The classification of land according to the vegetation or material that covers most of its surface; for example, pine ...

land use

The classification of land according to what activities take place on it or how humans occupy it; for example, ...

landform

Any natural feature of the land having a characteristic shape, including major forms such as plains and mountains and ...

landmark

1 Any prominent natural or artificial object in a landscape used to determine distance, bearing, or location. 2 ...

Landsat

Multispectral, earth-orbiting satellites developed by NASA (National Aeronautics and Space Administration) that gather imagery for land-use inventory, geological ...

landscape ecology

The study of spatial patterns, processes, and change across biological and cultural structures within areas encompassing multiple ecosystems.

LAS

An industry-standard binary file format that maintains information related to lidar data.

late binding

A COM technique that an application uses for determining an object's properties and methods at run time, rather than ...

latitude

The angular distance, usually measured in degrees north or south of the equator. Lines of latitude are also referred to ...

lattice

A representation of a surface using an array of regularly spaced sample points (mesh points) that are referenced to a ...

layer

1 The visual representation of a geographic dataset in any digital map environment. Conceptually, a layer is a ...

layout

1 The arrangement of elements on a map, possibly including a title, legend, north arrow, scale bar, and ...

leader

In MOLE, typically two or more force elements grouped together and placed on a line based on user-specified ...

leveling

In surveying, the measurement of the heights of objects and points according to a specified elevation, usually mean sea level.

LIBID

Acronym for Library Identifier. A type of GUID consisting of a unique string assigned to a type library.

library

1 In object-oriented programming, a logical grouping of classes, usually with a header section that lists the classes in ...

license file

A file that contains License Manager license data. Each license file contains information such as the SERVER, ESRI_SENTINEL_KEY ...

LIDAR

Acronym for light detection and ranging. A remote-sensing technique that uses lasers to measure distances to reflective surfaces.

limits

In Survey Analyst for field measurements, restrictions that define an acceptable level of measurement error for each computation.

line

On a map, a shape defined by a connected series of unique x,y coordinate pairs. A line may ...

lineage

A collection of states representing the changes that have occurred over time in a versioned geodatabase.

link

1 In georeferencing, connections added between known points in a dataset being georeferenced and corresponding points in the dataset ...

little endian

A computer hardware architecture in which, within a multibyte numeric representation, the least significant byte has the lowest address ...

localization

The process of adapting software to the requirements of a different language or culture, including translating user interfaces, ...

logical query

The process of using mathematical expressions to select features from a geographic layer based on their attributes; for example, ...

longitude

The angular distance, usually expressed in degrees, minutes, and seconds, of the location of a point on the earth's surface ...

loose coupling

A relatively unstructured relationship between two software components or programs that work together to process data, which requires little overlap ...

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