System an method for the visual display of data in an interactive split pie chart

摘要

A computer system having a visual display which displays data in an interactive split pie chart and permits a user to modify the input parameters of the pie chart to dynamically alter the configuration of the chart. The split pie chart can be split into two or more sections each corresponding to a different time period. Each section is divided into wedges corresponding to different variables and their corresponding values in two different time periods. Finally, the chart itself is geographically placed on a graphic image of a map. An interface between the computer system and a data storage system to transfer data to be transformed into the graphical representation of the pie chart is provided. The user modifies the input parameters of the pie chart through a user interface which translates the modifications into queries to the database storage system to retrieve the appropriate data.