2011

metadata Data about data. In the GIS context, metadata consists of
information that describes the essential characteristics of geospatial data sets.
See also FGDC CSDGM Standard (page 2063).
Military Grid Reference System (MGRS) A
Universal Transverse Mercator
(UTM) projection
(page 2078)- and Universal Polar Stereographic (UPS)-based
grid reference system (page 2065) used by the United States military and NATO.
monuments Features with known coordinates, used to establish accurate and
precise location on a map. See also control points (page 2058).
Mpolygon A polygon object. A polygon differs from a closed polyline in that
it stores information about its inner and outer boundaries.
naming scheme The method of determining an individual map tile name.
Examples include column/row, sequential, and data driven.
network analysis, network flood trace See
flood trace (page 2064).
network topology A description of the spatial relationship between linear
drawing objects (links and, sometimes, nodes). For example, a network
topology can represent pipelines, streets, electrical transmission lines, and
rivers.
node A single point or a link end point or intersection in a topology. A node
can be represented as a block or point object.
node topology A description of the spatial relationship between geographic
point objects in a drawing. Examples of node topologies include point sources
of pollution and road signs.
normalizing In a theme, the scaling of data values relative to another data
value. A common example is adjusting the thematic value based on the area,
length, or perimeter of the entity.
object class All the drawing objects that have been created using a specific
object class definition. Use object classification to organize objects in your
drawing based on the real-world features they represent, such as roads. Object
classes allow you to create new objects that automatically have the appropriate
properties and values for objects in your drawing. See also
feature class (page
2063).
object class definition A definition of how to create a classified drawing
object in a drawing. An object class definition can include information about
the object type, default properties of the object, or default data that should
be attached to the object.
Glossary | 2069