GIS terms starting with I

35 terms

Identity The topological overlay of a coverage (input) with a polygon coverage (identity).
identity link A coverage link whose from-location is the same as its to-location. Used to control rubber sheeting and adjustment operations.
Image To image a hard drive is to make an identical copy of the hard drive, including empty sectors.
image catalog An organized set of spatially referenced, possibly overlapping, images that can be accessed as one logical image.
image integrator A collection of image management and display tools in ARC/INFO that allows vector and raster data to be displayed concurrently.
imagery (IH-mij-ree) A technique in which the person focuses on positive images in his or her mind.
impedance The amount of resistance (or cost) required to traverse a line from its origin node to its destination node or to make a turn (i.e.
Index Statistical measure of the state of the stock market or economy based on the performance of stocks or other components.
index coverage The polygon coverage that describes, and is used as a spatial index for, the tile structure of a layer.
INFO A tabular DBMS used by ARC/INFO to store and manipulate feature attribute tables and other related tables.
INFO database The contents of a set of INFO data files, feature attribute tables, and related files stored in each ARC/INFO workspace under a subdirectory named INFO.
INFORMIX A relational database management system to which ARC/INFO has access through the DATABASE INTEGRATOR.
INGRES A relational database management system to which ARC/INFO has access through the DATABASE INTEGRATOR.
Initial Graphics Exchange Specification (IGES) A common data format used for transfer of CAD data. IGES files can be converted to and from ARC/INFO coverages.
Institute of Electrical and Electronics Engineers (IEEE) IEEE Standard 1003.1-1990 (aka POSIX.1) defines C program interfaces for the operating system that enable source code portability beyond the ANSI C…
integer A number without a decimal (0, 1, 25, 173, 1032, etc.). Integer values can be less than, equal to, or greater than zero.
Integrated Services Digital Network (ISDN) provides WAN (see WAN) combined transmission of analog and digital services. ISDN is offered as a Basic Rate Service on either one or two channels for WAN…
Integrated Terrain Unit Mapping (ITUM) An example of integrated data management. It is the process of adjusting terrain unit boundaries so that there is increased coincidence between the…
inter-application communication (IAC) A technology that enables software applications on remote or local machines to communicate with each other.
interaction Interaction is a measure of the estimated number of trips that will be generated between origins and destinations for a particular activity.
interaction matrix A generated INFO file containing the number of interactions occurring between a set of origins and destinations.
Interactive Graphics Design Software (IGDS) Intergraph IGDS file formats can be converted to and from ARC/INFO coverages.
Interapplication communication (IAC) The capability of one computer program to communicate with another program. With IAC, two (or more) programs can execute simultaneously, share data, and…
interface (1) A shared boundary defined by common physical interconnection characteristics, signal characteristics, and meanings of interchanged signals.
internal number See Cover#.
International Organization for Standardization (ISO) A worldwide federation of national standards bodies (e.g., ANSI from the U.S.) that develops international standards.
Internet A worldwide network of networks that all use the TCP/IP communications protocol and share a common address space.
interpolation The estimation of z values of a surface at an unsampled point based on the known z values of surrounding points.
intersect The topological integration of two spatial data sets that preserves features that fall within the area common to both input data sets.
ISO 8211 The third of three parts of the SDTS (see SDTS) that specifies data transfer implementation (i.e., encoding method).
ISO 9000 Established in 1987, ISO 9000 is an international set of five related standards for qualification of global quality assurance and quality control…
ISO 9660 Volume and file structure of CD-ROM for Information Interchange. A standard for the organization of data on CD-ROM media established by the International…
isoline A line on a surface connecting points of equal value.
item A column of information in an attribute table, for example, a single attribute of a record in an INFO data file.
item indexing A means of accelerating logical queries and tabular 'relates' by creating an index on an item in a database table.