2011

rubber sheeting An editing method, used only when necessary, that attempts
to correct errors by stretching a map to fit known control points or
monuments.
rule (for feature themes) A feature theme consists of a collection of rules.
Each rule specifies a style and feature label for the features that meet the
specified condition. You can add a legend label to provide a description of
the condition of a rule. As a layer is drawn, each
feature (page 2063) is compared
to the rules in the order that they are listed. The first rule for which the feature
meets the condition is used to specify the style and feature label for that
feature.
save set Objects that have been created or modified in the current drawing
and are marked to be saved back to source drawings.
scale The ratio of the distance on a paper map to the distance on the ground.
If a paper map has a scale of 1:100,000 (also represented as 1/100000), then
a distance of 1 unit on the paper 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 You can define different stylizations 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 definition of multiple feature classes and the relationships between
them. A schema is the logical description of the data types used to model
real-world objects, and does not reference the actual data instances (a particular
road or land parcel). Rather, it is metadata. See also
feature class (page 2063).
SDF Spatial Data File. An open source file-based geodatabase that can contain
multiple feature classes or types of data stored in tables with attributes and
geometry. See
SDF 2 (page 2073), SDF 3 (page 2073).
SDF 2 The previous version of the SDF file format. It was the native file format
for Autodesk MapGuide (the last release was Autodesk MapGuide 6.5). Each
SDF 2 file generally contained one
feature class (page 2063) or type of data, for
example points, lines, polygons, or text.
SDF 3 The current version of the SDF format. It is the native format for
MapGuide Enterprise and MapGuide Open Source. Each SDF 3 file can contain
multiple feature classes or types of data stored in tables with attributes and
geometry. See
feature class (page 2063).
service An Oracle database.
shading See hillshading (page 2065).
Glossary | 2073