spatial featureSee geographic feature.
spatial indexingA means of accelerating coverage drawing, spatial selection, and feature identification by generating feature-based indexes for one or more feature classes of a coverage.
Spatial features in a GIS database are stored in either vector or raster form. GIS data structures adhering to a "vector" format store the position of map features as pairs of x, y (and sometimes z) coordinates.
Spatial features within a spatial database that have no associated attributes or auxiliary information.
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map layers Spatial features of a particular type maintained as separate GIS datasets that can be combined in a digital map as if they were different maps laid over each other on a light table.
Line: A spatial feature that is given a precise location that can be described by a series of coordinate pairs. In theory a line has length by no width.
Complex object - Spatial features that cannot be represented by simple geometry, e.g. the coastline of the United States.
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A numerical, text, or image field in a relational database table that describes a spatial feature such as a point, line, area, or cell.
The description of how spatial features are connected to each other. Method of determining spatial relationships in vector data models (tells computer what is inside or outside a polygon or which nodes are connected by arcs).
region A coverage feature class used to represent a spatial feature as one or more polygons. Many regions can be defined in a single coverage. Regions have attributes (PAT) that describe the geographic feature they represent.
or group of agencies, a profession, a group of researchers in the same discipline, corporate partners cooperating on a project, etc.) who, at least part of the time, share a common digital geographic information language and common spatial feature ...
The very first step to utilize the locational information is to obtain the x-y coordinates for all spatial features, either points or polygons.
Accordingly to this concept different branches of professionals should standardize the spatial features used by each group and after this software products can be developed to map the features from one group to the other.
Quality control editing of the digitized product is a crucial step in preparing spatial feature data. After initially digitizing a data layer, an edit plot is produced of those digitized features.
In addition to representing the attributes of coordinate features, tables can exist in ArcMap as objects separate from spatial features.
ArcView functionality includes spatial feature and attribute creation and editing, address matching and geocoding, newly enhanced cartographic features including expanded data classification options, and a wide range of spatial analysis techniques, ...
In a GIS each row is usually linked to a separate spatial feature, e.g. a forestry stand. Accordingly, each row would be comprised of several columns, each column containing a specific value for that geographic feature.
Using New Theme and Edit function in ArcView can digitize the spatial features. There are three feature types: point, line, and polygon. Users can choose one of them to edit. The Drawing tool palette can be used to draw new features.
Adheres to native Oracle Spatial feature and topology models
Supports Oracle Single Sign-on allowing users to access Oracle's database using Windows sign-on credentials
Maintains defined topological relationships ...
A shapefile stores non-topological geometry and attribute information for the spatial features in a data set. A shapefile consists of a set of 3 mandatory files, along with several optional files.
Students learn to add and overlay GIS data layers, select spatial features, and make basic map layouts. They also learn the basics of Microsoft Excel, Adobe Illustrator, and Adobe PhotoShop.
Orientation: Attribute of spatial features that describes the angle at which it is turned from its normal north south axis. Applies particularly to text or symbols, two point line features, and entire blocks of spatial features.
It is very important to be aware of the scale of a given spatial data source as the degree of simplification and reduction involved in the representation of spatial features tends to increase as scale decreases.
Tables - A Table is a collection of attribute data, typically linked to spatial features in a Theme.
Charts - A Chart is a graphic representation of attribute data in a Table. A Chart can be dynamically linked to both a View and a Table.
Entities
Individual spatial features which include trees, lakes, grasslands and so forth.
Equal Area Projection
Projection which preserves the area of the area of interest shown but does not preserve the real-world distance or shape.
Query: A logical search specification finding spatial features with linked records that contain matching geographic and/or nongraphic attributes.
The spatial component of a spatial feature consists of the geometric representation of its shape in some coordinate space - referred to as its "geometry".
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Characters or numbers describing some characteristic about a spatial feature.
Cell
The basic element in a raster based format (grids). Grid cells are always square.
Special data structure used in a database to speed searching for records in tables or spatial features in geographic data sets.
ArcInfo supports both spatial and attribute indexes. See also item indexing, cross-tile indexing and spatial indexing.
Coordinate Geometry (COGO) functions are typically used by land surveyors to enter traverses around spatial features such as parcels, to calculate precise locations and boundaries sing distances and bearings from reference points, ...
(3) The manipulation of spatial data organized in layers to create combined spatial features according to logical conditions specified in Boolean algebra.
The spatial features are extracted from Ariel imagery using photogrammetry methods.
Utility infrastructure GIS data capture for water lines, road network, pavements, sewerage network, and other related features.
Example: In the Portland map, a park is a spatial feature and the associated information about the park name, area, administrative code and type code are non-spatial attributes which are linked to the park by its location.
A data transformation enables you to control the data flow by mapping geometry and attributes in the source data to geometry and attributes in the destination. This process may include a change in coordinate system, spatial feature types, ...
 See also: Feature, Information, GIS, Model, Spatial Data
  
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