GIS terms starting with C

46 terms

  1. CAD drawing The digital equivalent of a drawing, figure or schematic created using a CAD system. For example, a drawing file or DWG file in AutoCAD.
  2. cadastre Public record of the extent, value and ownership of land within a district for purposes of taxation.
  3. Calibration the set of operations which establish, under specified conditions, the relationship between values indicated by a measuring instrument or measuring…
  4. Capacity Your ability to make your mortgage payments on time. This depends on your income and income stability (job history and security), your assets and savings…
  5. Cartesian Coordinate System A two-dimensional, planar coordinate system in which x measures horizontal distance and y measures vertical distance.
  6. Cell The fundamental level of structural organization in complex organisms. Eukaryotic cells contain a nucleus (with chromosome s) and cytoplasm with the…
  7. Center Generally speaking, the vertical axis of a tropical cyclone, usually defined by the location of minimum wind or minimum pressure.
  8. character See: trait.
  9. checkin Checkin is the act of returning ArcStorm data which was previously checked out for update purposes.
  10. checkout Checkout is the act of taking selected data out of an ArcStorm database into a local coverage for editing purposes.
  11. Citrix The server system that allows District employees to use applications such as ArcGIS and Pictometry software via the Intranet.
  12. Client/Server An architecture whereby a computer system consists of one or more server computers and numerous client computers (workstations).
  13. clip The spatial extraction of those features from one coverage that reside entirely within a boundary defined by features in another coverage (called the clip…
  14. Column A vertical, cylindrical support. In classical design it is composed of a base (except in the Greek Doric order), a long, gradually tapered shaft, and a…
  15. Comité Consultatif Internationale de Télégraphique et Téléphonique (Consultative Committee on International Telephone and Telegraph) (CCITT) CCITT is a technical committee of the International Telecommunications Union, a United Nations organization in Geneva.
  16. command For command-oriented functions, the authorization required to perform command operations. 55
  17. command line interface (CLI) A software product that allows the user to type in commands at a prompt. Contrast to forms interface.
  18. commit To send a person to prison, asylum or reformatory by a court order.
  19. Compact Disk-Read Only Memory (CD-ROM) CD-ROM is an optical media. A CD-ROM 5.25-inch disk can hold about 650 megabytes of information.
  20. Computer Aided Design (CAD) An automated system for the design, drafting, and display of graphically oriented information.
  21. Computer Graphics Metafile (CGM) A graphic image exchange standard, ANSI: x3.122-1986, ISO: 8632-1986, for graphic output file format.
  22. Computer-Aided Software Engineering (CASE) CASE tools are defined programming rules for applying engineering principles, methods, techniques, and concepts.
  23. concurrency management A database management process for maintaining consistency of the data while supporting simultaneous access by more than one user.
  24. conditional operator A symbol or keyword specifying how to compare values. Conditional operators are used to query a database.
  25. conflation A set of functions and procedures that aligns the arcs of one coverage with those of another and then transfers the attributes of one to the other.
  26. connectivity The topological identification of connected arcs by recording the from- and to-node for each arc. Arcs that share a common node are connected.
  27. constraints Limits imposed on a model. For example, in an interaction model, specifying that the number of trips generated from an origin to all destinations cannot…
  28. Content Standards for Spatial Metadata (CSSM) A document produced by the Federal Geographic Data Committee (FGDC) that describes spatial metadata.
  29. contiguity The topological identification of adjacent polygons by recording the left and right polygons of each arc. See also polygon-arc topology.
  30. continuous data A surface for which each location has a specified or derivable value. Typically represented by a tin or lattice (e.g., surface elevation).
  31. Contour A line of constant elevation.
  32. contour interval The difference in surface values between contours.
  33. contour line An imaginary line joining points of equal elevation.
  34. Control Points Horizontal and Vertical: Small monuments securely embedded in the surface of the dam. Any movement of the monument indicates a movement in the dam itself.
  35. coordinate A set of numbers that designate location in a given reference system, such as x,y in a planar coordinate system or an x,y,z in a three-dimensional…
  36. COordinate GeOmetry (COGO) Land surveyors use COGO functions to enter survey data, to calculate precise locations and boundaries, to define curves, and so on.
  37. coordinate system A reference system used to measure horizontal and vertical distances on a planimetric map.
  38. cover Natural or manmade objects on the bottom of lakes, rivers, or impoundments, especially those that influence fish behavior.
  39. Cover-ID An integer identifier, assigned by the user, to relate geographic features and corresponding attribute data.
  40. coverage The scope of protection provided by an insurance contract which includes any of the listed benefits in an insurance policy.
  41. coverage extent The coordinates defining the minimum bounding rectangle (i.e., xmin,ymin and xmax,ymax) of a coverage or grid.
  42. coverage units The units (e.g., feet, meters, inches) of the coordinate system in which a coverage is stored.
  43. cross-tile indexing A method used to index features that cross tile boundaries. Features that cross tile boundaries are stored as one or more features in each tile instead of…
  44. Cultural and Society The characteristics of societies and cultures. For example, resources describing natural settlements, anthropology, archaeology, traditional beliefs…
  45. cursor A graphic pointer used with a mouse to point to a location on a terminal screen.
  46. Cycle In alternating current, the current goes from zero potential or voltage to a maximum in one direction, back to zero, and then to a maximum potential or…