Autodesk 15606-011408-9005 - MAP R6.3 NAMED-10U PK, Tutorials Manual, Page: 322 / 332

query A set of criteria for specifying the selection of objects or records. For example, a layer
(page 312) -based query can display only the objects on the layers that contain state and
district boundaries.
raster Images containing individual dots (called pixels or cells) with color values, arranged
in a rectangular, evenly spaced array. Aerial photographs and satellite images are examples
of raster images used in mapping. Compare with
vector (page 316) .
resolution In a raster (page 314) image, the density of pixels-per-inch (PPI) or dots-per-inch
(DPI).
save set Objects that were created or modified in the current drawing and are marked to be
saved back to source drawing (page 315) s.
scale The ratio of the distance on a paper map to the distance on the ground. A scale of
1:100,000 (also represented as 1/100000), means that a distance of one unit on the map
corresponds to 100,000 units on the ground. On a digital map, scale represents the scale of
the map from which the digital map was derived.
scale threshold Levels at which a map display changes. You can define different style (page
315) s at different scale thresholds. For example, turn on the display of road names only when
the drawing scale factor is below 1:5000.
schema The metadata that provides a logical description of multiple feature class (page 311) es
and the relationships between them.
SDF Spatial Data File. The current version of the SDF format that is the native format for
the Autodesk MapGuide technology (Autodesk MapGuide Enterprise 2007 and MapGuide
Open Source). Each SDF file can contain multiple
feature class (page 311) es or types of data
stored in tables with attributes and geometry.
SDF 2 A previous version of the SDF file format that was the native file format for Autodesk
MapGuide (the last release was Autodesk MapGuide 6.5). Each SDF 2 file generally contained
one
feature (page 311) or type of data, for example points, lines, polygons, or text.
sheet An individual named object in a sheet set (page 314) that can be published. A sheet
references a layout.
sheet set A named collection of sheets and sheet subset (page 314) s for publishing.
sheet subset A named collection of sheets within a sheet set (page 314) . An individual sheet
can be a member of only a single subset.
sheet template A drawing file that defines a title block and a layout for use in sheets. A
sheet template can be specified for sheet set (page 314) s and sheet subset (page 314) s.
314 | Chapter 9 Glossary