Feature other geodata for individual SDSSs are stored in ArcGIS 9.2 file-based geodatabases. Resulting Tools The ArcGISDoubleMapPanel was specially developed for environmental and social research, which requires the ability to compare different scenarios. With the help of two PageLayoutBeans, two feature layers with different attributes can be displayed and the user can intuitively compare these attributes. A Java slider (JSlider) component located below the two maps allows the user to view changes in the scenario over time. This slider has access to multitemporal feature layers and provides different time increments. Alternatively, the ArcGISDoubleMapPanel displays feature data classified by only one attribute. The user is able to compare two maps or even a map and a static figure, like an age pyramid, visually. In the latter case, ArcGISDoubleMapPanel provides an easy way to give the user more detailed information, for example, population information for specific communes in the research area for a selected year. Using a specific processor that accesses the specific time step of the layer, both PageLayoutBeans of the ArcGISDoubleMapPanel are updated during run time. Based on the classification applied to the map, layers change col- The 3D-ArcGISScenePanel or or age pyramids change shape in response to movement of the time slider. The 3D-ArcGISScenePanel was developed for another SDSS. It is designed to optimize production systems under climate change and visualize eco-volume data within tropical agricultural science. Besides the use of the common ArcGIS tools provided by ArcGIS Engine, this graphical user interface (GUI) provides the user with the opportunity to rotate the 3D map in all directions and get a useful overview of a certain region of interest. In addition, specific 3D objects are included. Hence, within the IMPETUS client, three-dimensional vector and raster layers can be displayed and analyzed with the help of the 3D-ArcGISScenePanel. In the research area of the Upper Ouémé Valley in Benin, more than 2,000 wells were digitized and included in a comprehensive geodatabase. With the help of Esri ArcGIS Engine technology, ArcGISMapPanel was developed, which allows the user to visualize a one-to-many SQL-DB selection. This panel is a comprehensive map visualizing GUI, which includes a MapPanel, an overview map, and GIS tools. By using the ArcGISMapPanel and its specific functionalities, it is possible to select specific wells in the geodatabase based on a chosen location, visualize the data in a developed map panel, and save the selection in a vector file. Continued on page 18 ArcUser Fall 2009 17 www.esri.com