GIS Dictionary

1 [database structures] A column in a table that stores the values for a single attribute. 2 [computing] The place in a database record, or in a GUI, where data … Read more

[analysisgeoprocessing] In geoprocessing, defining the field structure and content for an output dataset.

[ESRI software] The number of digits that can be stored in a field in a table.

[ESRI software] The number of decimal places for float or double-type geodatabase table fields.

[cognition] A philosophical view of geographic space in which space is completely filled by occurrences of phenomena, and in which phenomena are described by a range of values on a … Read more

[computing] A collection of uniquely named information stored on a drive, disk, or tape. A file generally resides within a directory.

[database structures] A geodatabase stored as a folder of files. A file geodatabase can be used simultaneously by several users, but only one user at a time can edit the … Read more

[computing] The name that distinguishes a file from all other files in a particular directory. It can refer to the name of the file by itself (harold), the name plus … Read more

[computing] The abbreviation following the final period in a file name that indicates the file’s format, such as .shp, .zip, or .tif. File name extensions are usually one to four … Read more

1 [map display] The interior of a polygon; the area inside the perimeter. 2 [ESRI software] In MOLE, the graphic component inside the frame that forms the background.

[symbology] A color or pattern used to fill polygons on a map.

[data analysis] A segment of a circle used to connect two intersecting lines. Fillets are used to create smoothly curving connections between lines, such as pavement edges at street intersections … Read more

1 [spatial analysis] On a raster, an analysis boundary or processing window within which cell values affect calculations and outside which they do not. Filters are used mainly in cell-based … Read more

[data analysis] A process that seeks out new market areas based on the characteristics of an existing market area.

[database structures] The first level of guidelines for designing table and data structures in a relational database. The first normal form guideline recommends creating a unique key for every row … Read more

The degree to which a dataset is suitable for a particular application or purpose, encompassing factors such as data quality, scale, interoperability, cost, data format, and so on.

[geodesy] A single position obtained by surveying, GPS, or astronomical measurements, usually given with altitude, time, date, and latitude-longitude or grid position.

[ESRI software] In Survey Analyst for field measurements, a survey point used as an input to a computation. The coordinates are not updated by the computation.

[ESRI software] In ArcGIS Tracking Analyst, stored temporal data that can be viewed in past, future, and past-and-future time windows. This data is stored in a shapefile or as a … Read more