Abstract: A method for displaying a user-configurable data report such as a treemap. The method includes creating a first data report by processing a set of report data that has been configured to a standardized format, e.g., an XML document. A user interface is provided on the monitor and the first data report is displayed in a report area or window of the user interface. The method includes displaying a hierarchical control tree for the first data report in a control area of the user interface. A selection of one of the nodes of the control tree is received via the user interface and the method includes responding by creating a second data report based on the node selection. The second data report is displayed in the report area. The method includes receiving user input of report creation parameters that are then used in creating the second data report.