GIS Dictionary

[geocoding] An adjustable value that dictates how far away from either the left or right side of a line feature an address location should be placed. A side offset prevents … Read more

[ESRI software] In Survey Analyst, used to compute a coordinate that is not a part of the main traverse course sequence.

1 [remote sensing] Information conveyed via an electric current or electromagnetic wave. 2 [physics] The modulation of an electric current, electromagnetic wave, or other type of flow in order to … Read more

[remote sensing] The ratio of the information content of a signal to its noninformation content (noise).

[statistics] In statistical testing, the probability of an incorrect rejection of the null hypotheses.

[spatial statistics use for geostatistics] A parameter of a variogram or semivariogram model that represents a value that the variogram tends toward when distances become large. Under second-order stationarity, variables … Read more

[ESRI software] In a geodatabase, a line feature that corresponds to a single network element in the logical network.

[data models] A point, line, or polygon that is not part of a geometric network and is not an annotation feature, dimension feature, or custom object.

[data models] A point, line, or polygon that is not part of a geometric network and is not an annotation feature, dimension feature, or custom object.

[ESRI software] In a geodatabase, a junction feature that corresponds to a single network element in the logical network.

[ESRI software] In a geodatabase, a junction feature that corresponds to a single network element in the logical network.

A kriging method in which the weights of the values do not sum to unity. Simple kriging uses the average of the entire dataset, which is less accurate than ordinary … Read more

An area defined by a generalized boundary drawn around the most distant set of customer points (a convex hull) that total to some value. The calculation may be unweighted (in … Read more

[ESRI software] The simplest form in which measurements from COGO sources or TPS (Total Positioning System) sources can be stored.

[data structures] A link or association between data sources that exist independently of each other.

[ESRI software] In ArcGIS Tracking Analyst, an event that contains all necessary information in one temporal data message (for real-time data) or record (for fixed-time data).

[map design] A type of cartographic generalization in which the important characteristics of features are determined and unwanted detail is eliminated to retain clarity on a map whose scale has … Read more

[cadastral and land records] A means of defining multiple units of land in a single survey document in such a way that all their boundaries have equal legal status. A … Read more

[data quality] A level of coordinate exactness based on the number of significant digits that can be stored for each coordinate. Single precision numbers store up to seven significant digits … Read more

[ESRI software] One of two types of setup pages in the Survey Analyst Survey Explorer. The single setup page is used for computations that process single instrument setups.

[software] In software licensing, a software product that can be used on only one machine.

[database structures] A geodatabase that can handle a single editor and multiple readers.

[programming] A class for which there can only be one instance in any process.

1 [analysisgeoprocessing] The location or group of locations used as the endpoint for distance analysis. 2 [network analysis] A junction feature that pulls flow toward itself through the edges of … Read more

The process of evaluating demographic data surrounding potential locations for a business, based on a user-defined trade area or areas.

[ESRI software] A downloadable application that users can customize and use on their site.