Pitney Bowes MapXtreme - Manual (Page 273)

Chapter 14: Using Themes and Legends
GraduatedSymbolTheme
MapXtreme v7.1 280 Developer Guide
Object Themes
Object themes include graduated symbol, and pie and bar charts. These themes create objects that
represent the data values. The following UML diagram gives an overview of the object theme
hierarchy.
GraduatedSymbolTheme
A graduated symbol theme is an object theme that contains point features whose symbol sizes are
based on the numeric values of the theme's expression.
For instance, use graduated symbols to show housing income for a particular segment of the
population across an area.