clinometric map
A map that represents slope with colors or shading.
A map that represents slope with colors or shading.
[ESRI software] A command that extracts features from one feature class that reside entirely within a boundary defined by features in another feature class.
[computing] In object-oriented programming, the process of creating a new instance of a class with the same state as an existing instance.
[surveying] In surveying, a traverse that starts and ends with the same survey point.
[ESRI software] In ArcGIS Network Analyst, a type of network analysis for finding the closest locations (facilities) from sites (incidents), based on the impedance chosenfor example, finding hospitals near a … Read more
[surveying] A discrepancy between existing coordinates and computed coordinates that occurs when the final point of a closed traverse has known coordinates and the final course of a traverse computes … Read more
[ESRI software] The summary of the difference between the endpoint coordinate of a traverse and the calculated endpoint.
[non-ESRI software] Acronym for common language runtime. The execution engine for .NET Framework applications, providing services such as code loading and execution and memory management.
[computing] Acronym for class identifier. A COM term referring to the globally unique number that is used by the system registry and the COM framework to identify a particular coclass.
[statistics] A statistical classification technique for dividing a population into relatively homogeneous groups. The similarities between members belonging to a class, or cluster, are high; while similarities between members belonging … Read more
[ESRI software] The minimum tolerated distance between vertices in a topology. Vertices that fall within the set cluster tolerance are snapped together during the topology validation process.
[ESRI software] A part of the topology validation process in which vertices that fall within a specified distance (cluster tolerance) of each other are snapped together.
[computing] A template for an object that can be instantiated in memory.
[GPS] GPS measurements calculated using the PRN code transmitted by a GPS satellite.
[ESRI software] A type of attribute domain that defines a set of permissible values for an attribute in a geodatabase. A coded value domain consists of a code and its … Read more
[ESRI software] In Survey Analyst for field measurements, measurements that comprise a set of interdependent COGO simple measurements.
[ESRI software] In Survey Analyst for field measurements, measurements that model values that define vectors, directions, lengths, and orthogonal offsets.
[Euclidean geometry] Occupying the same space. Coincident features or parts of features occupy the same space in the same plane.
[ESRI software] In a geodatabase, how the coordinates of coincident features are stored. For example, if two lines are coincident, they will both be drawn in ArcMap, with one line … Read more
[non-ESRI software] An Adobe software product that integrates databases and Web pages using a server and development tools. ColdFusion Web pages include elements written in ColdFusion Markup Language that simplify … Read more
[ESRI software] An ArcIMS Application Server Connector. In this environment, a request that includes ColdFusion tags is first executed on the ColdFusion Server. The ArcIMS custom ColdFusion tags are then … Read more
[remote sensing] A color image made by assigning red, green, and blue colors to each of the separate monochrome bands of a multispectral image and then superimposing them.
[graphics computing] A set of values that are associated with specific colors. Color maps are most commonly used to display a raster dataset consistently on many different platforms.
[graphics computing] Any system that organizes colors according to their properties for printing or display. Examples include RGB (red, green, blue), CMYK (cyan, magenta, yellow, black), HSB (hue, saturation, brightness), … Read more
[symbology] A range of colors used to show ranking or order among classes on a map.
1 [printing] In printing, the use of a separate printing plate for each ink color used. 2 [printing] The process of scanning with color filters to separate the original image … Read more
[programming] The COM requirement that interfaces, once published, cannot be altered.
[programming] A grouping of logically related virtual functions, implemented by a server object, allowing a client to interact with the server object. Interfaces form the basis of COMs communication between … Read more
[mathematics] A kind of mathematical operator that interprets input with Boolean values. Combinatorial operators assign a different number to each unique combination of input values.
[ESRI software] A toolbar, menu bar, menu, or shortcut menu in an ArcGIS application.
[computing] A string of text that acts as a command, typed at an interface prompt.
[computing] A format of the input and output of a program in which the user enters commands by means of strings of text typed on a keyboard, as opposed to … Read more
[ESRI software] In geoprocessing, a window that provides a command line for running tools and a message window for viewing the status messages created when running those tools.
[non-ESRI software] A window accessible from the Windows Start menu in which MS-DOS commands are typed.
[ESRI software] The isolation level in a database management system (DBMS) in which transactions read committed data only they don’t read data that has not been committed.
[ESRI software] A process that rearranges and consolidates the data in a file so that it occupies a single, contiguous space, allowing the data in each file to be accessed … Read more
[computing] The degree of uncertainty that can be tolerated in the spelling of a keyword used in a search, including phonetic errors and the random insertion, deletion, replacement, or transposition … Read more
[cartography] An indication of direction. One of the 32 divisions into which the circle around the needle of a compass is divided, each equal to 11.25 degrees.
[symbology] A diagram of compass points drawn on a map or chart, subdivided clockwise from 0 to 360 degrees with 0 indicating true north. On older maps and charts a … Read more
1 A widely used rule for adjusting a traverse that assumes the precision in angles or directions is equivalent to the precision in distances. This rule distributes the closure error … Read more
[ESRI software] In ArcGIS Tracking Analyst, a type of complex temporal event that includes two components and involves a moving object, such as an airplane. The moving object’s geographical location … Read more
[ESRI software] In a geodatabase, a linear network feature that corresponds to one or more network elements in the logical network.
[ESRI software] In ArcGIS 8.3 and previous versions, a junction feature in a geodatabase that corresponds to more than one network element in the logical network. For example, the state … Read more
[data analysis] An area calculated by finding the outermost customers of a store along several vectors and connecting them. Complex market areas are more accurate than simple market areas because … Read more
[ESRI software] A type of complex temporal event in ArcGIS Tracking Analyst that includes two components and involves a stationary object, such as a traffic sensor. The sensor’s geographical location … Read more
[ESRI software] An event in ArcGIS Tracking Analyst that contains two components: one with persistent object information, and one with observations of the object through time. The merger of the … Read more
[non-ESRI software] In COM, a binary unit of code that can be used to create COM objects.
[computing] A section of the registry that can be used to categorize classes by their functionality. Component categories are used extensively in ArcGIS to allow extensibility of the system.
[ESRI software] An ArcGIS utility program (Categories.exe) that can be used to view and manipulate component category information.
[ESRI software] In Survey Analyst for field measurement, a set of simple measurements that are related and applied as a group.
[computing] A link or association between objects where the lifetime of one object controls the lifetime of its related objects. For example, the association between a highway and its shield … Read more
[computing] A UML term used to describe a form of association in which the lifetime of the whole controls the lifetime of the parts. In a composition, the instances of … Read more
[standards] Within metadata, a group of data elements (including other compound elements) that together describe a characteristic of a spatial dataset in more detail than can be described by an … Read more
[database structures] A primary key that requires two or more fields to be unique.
[computing] The process of reducing the size of a file or database. Compression improves data handling, storage, and database performance. Examples of compression methods include quadtrees, run-length encoding, and wavelets. … Read more
[map projections] A projection that does not have equal area, conformal, or equidistant characteristics. The compromise projection is an attempt at balance between these characteristics, and is often used in … Read more
[ESRI software] In Survey Analyst for field measurements, a process that requires a set of input parameters to apply a set of rules, and an algorithm to calculate output parameters. … Read more
[ESRI software] In Survey Analyst for field measurements, a unique identifier that calls or retrieves a specific type of computation, defined on the General tab of the Survey Explorer.
[ESRI software] In Survey Analyst for field measurements, a sequence of computation dependenciesthe output points of some computations are used as the input for one or more others.
[ESRI software] In Survey Analyst for field measurements, the condition of a computation. A computation may be in four different states: valid, out-of-date, incorrect, or incomplete.
[ESRI software] In Survey Analyst for field measurements, a tool that interacts with the map to add measurement values to computation pages.
[mathematics] A branch of mathematics that uses algorithms to solve geometry problems. Computational geometry is used in many GIS operations, including proximity analysis, feature generalization, and automated text placement.
[education] Instruction or training that uses computer-based media instead of hard-copy materials. Computer-assisted learning is generally designed to use the strengths of computer-based media such as the ability to navigate … Read more
[computing] To join two or more character strings together, end to end; for example, to combine the two strings “spatial” and “analysis” into the single string “spatial analysis.”
[ESRI software] In linear referencing, a command that combines event records in tables containing events on the same route with the same value for specified fields. Only events in situations … Read more
[computing] In a relational database table, a primary key made by combining two or more keys that together form a unique identifier.
[ESRI software] The ability of a DBMS to support simultaneous access by more than one user.
[data editing] A database management process for maintaining the consistency of data while supporting simultaneous editing by more than one user. A typical technique involves locking portions of the database … Read more
[computing] Floating software products that are administered by a license manager. A central license manager (installed anywhere on a network) allows users to install the floating products on any number … Read more
[ESRI software] A component of the PLTS knowledge base that contains SQL statements and custom code for feature validation extended beyond standard geodatabase domains. PLTS utilizes condition tables for enhanced … Read more
[computing] A symbol or keyword that specifies the relationship between two values and is used to construct queries to a database. Examples include = (equal to), < (less than), and ... Read more
[computing] A programming language statement that executes one option if the statement is true, and another if it is false. The if-then-else statement is an example of a conditional statement.
1 [ESRI software] In ArcIMS, the file that contains the core site information. ArcIMS configuration files contain all the basic information about the content to be delivered, such as location … Read more
[ESRI software] In ArcSDE, a name for a group of parameters that defines how geodatabase objects are stored.
[data editing] A set of procedures that aligns the features of two geographic data layers and then transfers the attributes of one to the other.
1 [data editing] The process of solving uncertainty within a database that occurs when two versions of the same data are edited at the same time. Conflicts can occur when … Read more
A projection that preserves the correct shapes of small areas. In a conformal projection, graticule lines intersect at 90-degree angles, and at any point on the map the scale is … Read more
The characteristic of a map projection that preserves the shape of any small geographic area.
A projection that transforms points from a spheroid or sphere onto a tangent or secant cone that is wrapped around the globe in the manner of a party hat. The … Read more
[ESRI software] In ArcCatalog, a mechanism used to access remote file systems and shared databases.
[cadastral and land records] A cadastral fabric line with bearing and distance data attached to it, commonly used to tie parcels across roads, tie in control points, or tie the … Read more
1 [data models] The way in which features in GIS data are attached to one another functionally or spatially. 2 [ESRI software] In a geodatabase, the state of association between … Read more
[network analysis] In network datasets, a logical grouping of point features, line features, or both, that controls how network elements are connected. Connectivity groups are defined when a network dataset … Read more
[network analysis] In a network dataset, a property of network sources that defines how network elements connect to each other within a connectivity group. There are two types of edge-edge … Read more
[ESRI software] In Survey Analyst for field measurements, one of two phases involved when performing a least squares adjustment for a measurement network. In this phase, the emphasis is on … Read more
[data models] Limits imposed on a model to maintain data integrity. For example, in a water network model, an 8-inch pipe cannot connect to a 4-inch pipe.
[ESRI software] In ArcGIS versions 9 and earlier, an edit command that takes selected features from one or more feature classes and creates new features in a target feature class. … Read more
[ESRI software] In Survey Analyst – Cadastral Editor, a line with a bearing and distance that is used to create geometry for a new cadastral fabric parcel.