| 摘要 |
Exemplary embodiments include a method for generating a graphical comparison of geographic information system data in a computer system. The computer system can include a graphical user interface including a display and a selection device. The method can include displaying a plurality of controls on the display, each of the plurality of controls for generating a response in geographic information system data on the display, receiving a geographic information system data selection signal indicative of the selection device pointing at a geographic information system data selection control on the graphical user interface, and in response to the geographic information system data selection signal, retrieving geographic information system data from a geographic information system database for display on the graphical user interface, wherein the geographic information system data includes data from at least one historical point in time.
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