Using a property for coloring purposes
The Color by axis in the map chart feature layer below is set to the Members column in the data table to the right. All states have the same color so far, because the Color mode is set to Fixed. Assume you wish to identify states where the number of members exceeds a certain user-controlled value that you specify in a text area. For example, you might want to color all states that have more than 1000 members in green.
Before you begin
About this task
To do this, a color rule is added to the Fixed color mode. The rule
includes a property, whose value is controlled from a text area:
Procedure
-
In edit mode,
add the property control to the text area.
In this example, we add an
Input field.
-
In the
Property Control dialog, create the property via
New. Give it a name, specify its data type,
and a starting value. In this example, we call the property 'MembersExceed'.
No other settings are needed within the Property Control dialog. -
Now you can connect the property to the place that should react on
changes to the property value. In this case it is a color rule on the
Colors page in the
Feature Layer Settings dialog. Click
Add Rule, set
Rule type to
Greater than, and in the
Value field, select
Custom expression, and enter the created
property
${MembersExceed}(note the syntax) below Expression.
Results
