The ArcGIS Network Analyst, in particular its OD Cost
Matrix function, is often used by researchers to calibrate
the O–D travel time matrix (http://www.esri.com/
software/arcgis/extensions/networkanalyst/). Figure 3
illustrates the process for implementing the task in
ArcGIS. The process begins with building the network
dataset in ArcCatalog, where a user chooses the settings for
connectivity, modeling turns, and others and specifies the
network attributes such as length, travel time, and others.
Then, in ArcMap, the user activates the Network Analyst
extension and its OD Cost Matrix function. After loading
the predefined network dataset to the active project, various
network parameters (impedance, distance unit, etc.) need
to be defined. In the Network Analyst window, one can use
the origins feature to define ‘Facilities’ and the destinations
feature to define ‘Incidents’ and then choose the OD Cost
Matrix tool to solve the problem and save the result.