Once the geometric network is loaded into ArcMap, the toolbar for the Geo-MODSIM extension
is accessed from the Tools > Customize > Toolbars tab by selecting the CSU-GeoDSS toolbar.
Clicking the GeoDSS-MODSIM dialog icon in the toolbar opens the Geo-MODSIM GUI in
ArcMap. All the functionality for connecting ArcGIS and MODSIM is available in this custom
dialog, which docks into the ArcMap work space, providing a convenient means of capturing the
objects and characteristics of the geometric network and transforming them into a MODSIM network
flow model (Figure 12.12). New MODSIM networks can be generated from this dialog, or
existing networks updated based on changes in the geometric network. The network is saved in the
MODSIM *.xy file format to accommodate storage of MODSIM-specific data. Synchronization
between the geometric network and MODSIM networks is automatically maintained, while also
providing access to general MODSIM user dialogs, run options, and customized tools for spatial/
temporal data preprocessing.