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GIS (Geographic Information System)
A computerized decision support system that
integrates geographic data,
attribute data
(page 309)
, and other spatially referenced data. A
GIS is used to capture, store, retrieve, analyze, and display
spatial data
(page 315)
.
global coordinate system
A method that converts the coordinates representing latitude
and longitude into an AutoCAD Map 3D map Cartesian coordinate system. This method
accounts for the curvature of the surface of the earth with a projection. A coordinate system
can use a projection, an ellipsoid definition, a datum definition, standard parallels, and a
central meridian to define it.
inset
A detailed, large-scale portion of a map, often placed on the same sheet as a
smaller-scale map of the larger area.
join
A relationship that is established between attribute data and feature sources to create
a view of the combined data for ad-hoc analysis.
key view
A thumbnail view of an entire map. You can create a simplified view of the mapped
area to use as the key view.
label
Text placed on or near a map
feature
(page 311)
that describes or identifies it.
layer
A resource that references a
feature class
(page 311)
or a
drawing source
(page 311)
that
you add using
Display Manager
(page 310)
. The layer contains styling and theming
information, and optionally a collection of scale ranges. See also
AutoCAD layer
(page 309)
,
drawing layer
(page 311)
,
feature layer
(page 311)
, or
surface layer
(page 315)
.
legend
A table that lists the styles in your map and specifies which layers or map scales
they represent.
lock
To make all or part of a disk file read only so that other users on a network cannot
modify it. Object locking applies to objects that another user is editing. File locking applies
to entire files, for example when an AutoCAD user wants to open a file while the file is being
edited in AutoCAD Map 3D.
logical operator
A symbol such as And, Or, Not, =, >, >=, <, and <= used to define logical
relationships.
map
A collection of layers displayed within a consistent coordinate system and extents. See
also
layer
(page 312)
.
map book
A collection of map tiles that you publish as separate pages. You can specify the
layout and properties for your map book on the Map Book tab of the
Task Pane
(page 315)
.
Map Explorer
The
Task Pane
(page 315)
tab where you manage your mapping resources.
312 | Chapter 9 Glossary
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