a theme for a feature layer
- In Display Manager,
select a feature layer. Click the Style icon
in the toolstrip.
For information about
creating a new feature layer, see Bringing in GIS Features.
- In the Style Editor,
under Scale Ranges, select the scale
range to theme.
For more information
about scale ranges, see Defining Scale Ranges.
- In the Polygon Style, Point
Style, or Line Style area, click New
- To analyze features based on values that
fall into various numerical ranges, do the following:
- For Property,
select the property on which to base the theme.
- For properties with numeric values, specify
the Minimum Value and Maximum
Value for the range.
- For properties with numeric values, select
a Distribution method. For more information
about distribution methods, see the Concepts tab of this topic.
The first rule includes
the Minimum Value and the last
rule includes the Maximum Value. Styles are
interpolated across the range.
You can specify the number
of rules to create if Distribution method
is Equal, Quantile,
or Jenks (Natural Breaks). Properties
containing strings use an Individual Values distribution
that does not allow the number of rules to be edited. Adjust the
number of rules to control the granularity of the theme.
- If you are editing an existing theme,
you can replace any existing rules by selecting Replace
- The default Style Range shows
the styles that will be used for each rule. Your options depend
on the type of geometry stored on this feature layer.
- To add labels to features in the theme,
do the following:
- To create legend labels for the theme,
do the following:
- Select the Create Legend Labels check
- For Legend Text,
enter the text to appear next to each rule in the legend.
For example, if you are
theming by size, you could change the legend text to “Square Acreage.”
- For Label Format,
specify how to display the legend label.
If you theme a layer
on a property that contained area information and you used the label
the label formats might look like the following examples:
- <Label Text> <Min> to <Max>
- <Label Text> <Min> - <Max>
- <Min> <= <Label Text> <<Max>
For information on inserting
a legend into your map, see Adding a Legend.