Pitney Bowes MapXtreme User Manual
Page 617
Appendix L: Glossary
Terms
MapXtreme v7.1
624
Developer Guide
Feature
A row in a table that has geometry, style, and attributes. A Feature usually has a Table and Key to
identify which row it represents.
FeatureLayer
A MapXtreme layer that displays Features from a Table. For example, a layer of region objects
representing world countries is a FeatureLayer. A FeatureLayer must be added to a Map via the
Map's Layer collection. FeatureLayers can be native .TAB data, remote RDB, seamless or raster
data.
Geocode
The process of assigning X and Y coordinates to records in a table or database so that the records
can be displayed as objects on a map.
GeoDictionary
A MapXtreme file that contains information about tables (TAB files only). The GeoDictionary is used
to automatically determine the table to which application data should be bound.
GeoDictionaryManager
A MapXtreme tool for maintaining the Geodictionary.
Geographic Information System (GIS)
An organized collection of computer hardware and software designed to efficiently create,
manipulate, analyze, and display all types of geographically or spatially referenced data.
Geometric Centroid
A centroid point (see
) that does not need to be contained within the object (usually a
FeatureGeometry).
Geography Markup Language (GML)
A markup language specific to mapping. The GML is being developed by the Open GIS Consortium
(OGC), an international organization that develops and promotes geographic standards.
Graticule
A grid of horizontal (latitude) and vertical (longitude) lines displayed on an earth map, spaced at a
regular distance (for example, every five degrees, every fifteen degrees). Used to establish a frame
of reference.
Grid
An interpolation of data values across an area. A grid is created from a data file in which data is
measured at evenly-spaced points. The entire map area is converted to a grid in which each grid cell
represents a value. See
.
Hillshading
Relief shading of a grid map according to a virtual light source. The brightness of each grid cell
corresponds to the light striking the surface and is adjusted based on its orientation to the light
source.
Hypertext Markup Language (HTML)
A plain text (Ascii) language that enables developers to create Web pages that can be displayed by
different Web browsers on different computing platforms. Html uses tags to specify the structure of
the various parts of a document. Html supports links (using URLs) that point to other web documents
and files.