ArcObjects Library Reference  (NetworkAnalyst)    

NAServiceAreaSolver CoClass

Performs service area analysis.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server. Requires Network Analyst Extension.

Extended Error Information

Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.


Interfaces Description
INAServiceAreaSolver Provides access to the service area solver.
INAServiceAreaSolver2 Provides access to the service area solver.
INASolver Provides access to the common interface for all network solvers.
INASolverSettings Provides access to settings common to all solvers.
INASolverSettings2 Provides access to settings common to all solvers.
IPersistStream (esriSystem)
ISupportErrorInfo Indicates whether a specific interface can return Automation error objects.


NAServiceAreaSolver is a Network Analyst solver that computes the service area, or a polygon that surrounds all of the network locations that are within a specified cost-distance of a facility. For example, it can compute a three minute drive time polygon around a facility. More than one break value can be specified. For example, if solving on drivetime, break values of 5.0, 10.0, and 15.0 will compute three polygons at distances of 5, 10 and 15 minutes from the facility location. The actual set of edges traversed can also be generated separately. Multiple facilities will generate multiple, possibly overlapping service area lines and polygons. The overlapping polygons can be merged together and the overlapping lines can be made non-overlapping. Measure values can also be assigned to the service area lines. The NAServiceAreaSolver honors all of the settings of the INASolverSettings interface.