All > Technology > GIS
The system directory that LIBRARIAN uses to store the files that manage access to the library. Each library has an ACCESS directory located in the library's DATABASE directory.
- Browse Related Terms: ACCESS directory, ArcStorm database, DATABASE directory, digital map library, geographic database, layer, layer index, library, map library, map section, SSD, tile
All > Technology > GIS
The privileges accorded a user for reading, writing, deleting, updating and executing files on a disk. Access rights are stated as 'no access', 'read only' and 'read/write'.
- Browse Related Terms: access rights, American Standard Code for Information Interchange (ASCII), Backup, Bit, byte, Directory, file, file transfer, Network File System (NFS), optical disk, pathname, Petabyte, Terabyte (TB)
All > Technology > GIS
An aggregate measure of how reachable locations are from a given location. The ACCESSIBILITY command computes values for accessibility as a function of the distance between locations and an empirically derived distance decay parameter.
- Browse Related Terms: accessibility, accuracy, absolute, accuracy, relative, base map, coordinate, Laser Imaging Detection and Ranging (LIDAR), lattice, map, map extent, map limits, mesh point, page extent, planimetric, Planimetric Map, resolution, spatial order, triangulation
Also listed in:
All > Technology > GIS
The accuracy of a map in representing the geographic location of an object relative to its true location on the surface of the Earth. Absolute accuracy is based on geographic coordinates.
- Browse Related Terms: accessibility, accuracy, absolute, accuracy, relative, base map, coordinate, Laser Imaging Detection and Ranging (LIDAR), lattice, map, map extent, map limits, mesh point, page extent, planimetric, Planimetric Map, resolution, spatial order, triangulation
All > Technology > GIS
The accuracy of a map in representing the geographic location of an object relative to the locations of other objects.
- Browse Related Terms: accessibility, accuracy, absolute, accuracy, relative, base map, coordinate, Laser Imaging Detection and Ranging (LIDAR), lattice, map, map extent, map limits, mesh point, page extent, planimetric, Planimetric Map, resolution, spatial order, triangulation
All > Technology > GIS
A place name which is associated with an address. Address Aliases include buildings names, historical monuments, educational facilities, and more.
- Browse Related Terms: Address Alias, Archive, base table, checkin, checkout, data access security, database lock, historical view, history, persistent lock, registered table, Restore, virtual table
All > Technology > GIS
An address whose location is illogical. The address does not follow the standard rules of Washington, DC's addressing grid system. Types of address anomalies include, but are not limited to: wrong block, out of sequence, wrong side of street. Read the MAR Address Anomalies Report for full details.
- Browse Related Terms: Address Anomaly, Advisory Neighborhood Commissions (ANC), boolean expression, conditional operator, logical connector, logical expression, logical operator, Metropolitan Area (MA), Multiple Document Interface (MDI), Street Name Alias, Wide-Area Information Server (WAIS), World Wide Web (WWW)
All > Technology > GIS
A mechanism for relating two files using address as the relate item. Geographic coordinates and attributes can be transferred from one address to the other. For example, a data file containing student addresses can be matched to a street coverage that contains addresses creating a point coverage of where the students live.
- Browse Related Terms: address matching, digitizer, event source, foreign key, item indexing, join, many-to-one-relate, One-to-many, one-to-many-relate, primary key, referential integrity, relate, relate key, relation, relational database, relational join, table, tuple
All > Technology > GIS
A map point over the location of an address. Multiple address points may exist within a lot.
- Browse Related Terms: Address Point, Air Rights Lots, Appropriations, Calibration, Coordinate Geometry (COGO), Owner Point, parcel data, Recreation, Reservations, Square, Tax Lot
All > Technology > GIS
Manmade legal boundary descriptions for the purpose of governance and management.
- Browse Related Terms: Administrative and Other Boundaries, ArcStorm, Data Base Management System (DBMS), Database integrator (DBI), image integrator, INFORMIX, INGRES, Integrated Terrain Unit Mapping (ITUM), ORACLE, Relational database management system (RDBMS), SYBASE
All > Technology > GIS
Bodies of local government in Washington DC. There are 37 ANCs. They consider a wide range of policies and programs affecting neighborhoods, including traffic, parking, recreation, street improvements, liquor licenses, zoning, economic development, police protection, sanitation and trash collection, and the District's annual budget. The ANCs are the body of government with the closest official ties to the people in a neighborhood.
- Browse Related Terms: Address Anomaly, Advisory Neighborhood Commissions (ANC), boolean expression, conditional operator, logical connector, logical expression, logical operator, Metropolitan Area (MA), Multiple Document Interface (MDI), Street Name Alias, Wide-Area Information Server (WAIS), World Wide Web (WWW)
All > Technology > GIS
The taking of photographs from the air with a camera mounted on an aircraft.
- Browse Related Terms: Aerial Photography, aerial triangulation, Cartesian coordinate system, control points, coordinate system, ground control, orthophotograph, orthophotography, Photogrammetry, proximal tolerance, surface data
All > Technology > GIS
The process of developing a network of horizontal and vertical position from a group of known positions using measurements taken from aerial photographs and mathematical computations.
- Browse Related Terms: Aerial Photography, aerial triangulation, Cartesian coordinate system, control points, coordinate system, ground control, orthophotograph, orthophotography, Photogrammetry, proximal tolerance, surface data
All > Technology > GIS
Air right lots are established by real property tax administration to reflect a party's right to construct an improvement above an existing area of land that is not owned by the constructor.
- Browse Related Terms: Address Point, Air Rights Lots, Appropriations, Calibration, Coordinate Geometry (COGO), Owner Point, parcel data, Recreation, Reservations, Square, Tax Lot
All > Technology > GIS
The process of assigning arcs in a network to the closest center until the maximum impedance or resource capacity of the center is reached.
- Browse Related Terms: Allocation, destination, Hub, Network Element, network link, network node, Node, node match tolerance, origin, path, turn, turn impedance, turntable
Also listed in:
- All > Technology > Defense
All > Technology > GIS
A national coordinator of voluntary standards activities, and an approval organization and clearinghouse for consensus standards in the United States. ANSI works closely with international organizations, particularly ISO, for the development and approval of international standards. While ANSI standards apply to every facet of today's world, their efforts in the area of SQL and spatial extensions to SQL are of particular interest to the GIS community.
- Browse Related Terms: American National Standards Institute (ANSI), Comité Consultatif Internationale de Télégraphique et Téléphonique (Consultative Committee on International Telephone and Telegraph) (CCITT), Federal Geodetic Control Committee (FGCC), International Organization for Standardization (ISO), Internet, ISO 8211, ISO 9000, ISO 9660, Open Software Foundation (OSF), SQL/MM, X.25, X.400, Z39.50
Also listed in:
All > Technology > GIS
A set of codes for representing alphanumeric information (e.g., a byte with a value of 77 represents a capital M). Text files, such as those created with the text editor of a computer system, are often referred to as ASCII files.
- Browse Related Terms: access rights, American Standard Code for Information Interchange (ASCII), Backup, Bit, byte, Directory, file, file transfer, Network File System (NFS), optical disk, pathname, Petabyte, Terabyte (TB)
Also listed in:
All > Technology > GIS
Analysis is the process of identifying a question or issue to be addressed, modeling the issue, investigating model results, interpreting the results, and possibly making a recommendation. See model and spatial analysis.
- Browse Related Terms: analysis, fuzzy tolerance, Identity, intersect, polygon overlay, scratch file, spatial analysis, spatial modeling, topological overlay, union
Also listed in:
- All > Healthcare > Medicine > Cancer
- All > Science > Weather > Climate Change
- All > Technology > Security
All > Technology > GIS
Descriptive text used to label coverage features.
- Descriptive text used to label coverage features. It is used for display, not for analysis.
- One of the feature classes in a coverage used to label other features. Information stored for annotation includes a text string, the location at which it is displayed, and a text symbol (color, font, size, etc.) for display. See also TAT.
- Browse Related Terms: Annotation, environment, font, legend, line symbol, marker symbol, Optical Character Recognition (OCR), shade symbol, symbol, symbol environment, text symbol
Also listed in:
All > Technology > GIS
An API is a set of system calls or routines for application programs to access services from operating systems or other programs. An API allows your program to work with other programs, possibly on other computers. API is fundamental to client/server computing. ArcView provides this service to ARC/INFO users.
- Browse Related Terms: Application program interface (API), Citrix, client/server, Data Access Language (DAL), inter-application communication (IAC), Interapplication communication (IAC), Mosaic, POSIX 1003.4a, Remote Procedure Call (RPC), Utility and Communication
Also listed in: