2011

■ Feature labels display the values of a property. For example, you can label
parcels with their address or area values.
As a layer is drawn, each feature 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 legend label for that feature. A default or empty
condition applies to all features and defines the style for features that do not
meet any of the preceding rules. A well-constructed theme contains only one
default rule and it is last in the list.
Distribution Methods
When you create a range of conditions for a feature theme, you must specify
the distribution method. The following methods are available:
DescriptionMethod
The difference between the high and low values is the
same for every range. This method is easy to interpret
Equal
and is useful for showing continuous data such as rainfall.
Features are placed in ranges based on how much their
values vary from the mean. AutoCAD Map 3D calculates
Standard Deviation
the mean and then adds or subtracts the standard devi-
ation to or from the mean to create the ranges.
Each range contains an equal number of features. This
method is useful for showing data in which values are
evenly distributed.
Quantile
Ranges are based on natural groupings of data values.
Features with similar values are grouped. This method
shows the natural groupings in the data.
Jenks (Natural Breaks)
Features are not grouped. This distribution is useful if
values are not continuous, there is a fixed number of
values, and many features have the same value.
Individual Values
Tell me more
Video
■ Show me how to theme a parcels layer.
■ Show me how to manually adjust the
ranges of a theme.
Theming Features | 1167