Enumeration specifying the desired level of detail for the output polygons of a ServiceArea analysis.
In a hierarchical service area analysis, the solver prefers higher-order edges to the lowest-order edges. This means that if a facility is located on a local road (the lowest level in a hierarchy), the solver spans out on the local roads in that area, but it tries to step up the hierarchy to secondary and primary roads. Once on secondary and primary roads, the solver ignores local roads throughout the rest of the service area. It ignores secondary and local roads once it has stepped up to primary roads. Mainly because of this hierarchical approach, nonhierarchical service areas tend to be superior in quality to their hierarchical counterparts.
This option is available when your network dataset includes a hierarchy attribute. This hierarchy attribute will be used in calculating the service areas polygons.
Standard polygons are generated quickly and are moderately accurate, but quality will deteriorate as you move toward the borders of the service area polygons. Outputting standard-detail polygons may result in islands of unreached network elements, such as roads, being covered.
The most detailed polygons. Holes within the polygon may exist; they represent islands of network elements that couldn't be reached without exceeding the cutoff impedance or due to travel restrictions. Expect high-precision polygons to take the longest amount of time to generate.