Pitney Bowes MapXtreme - Manual (Page 373)

Chapter 20: Routing
Iso Routing (Drive-Time and Drive-Distance)
MapXtreme v7.1 380 Developer Guide
be a problem, but 120, 121, and 122 minute costs may be a problem. The larger the cost the
larger the cost increments will need to be.
The above example shows the geometries returned for an Encompassing style
banding of cost 5, 10, and 15 minutes from the starting point. Notice how each
geometry includes the area of the prior isoChrone.
The above example shows the geometries returned for a Donut style banding of cost
5, 10, and 15 minutes from the starting point. Notice how each geometry begins at the
end of the prior geometry, excluding the area of the prior isoChrone.
• MajorRoadsOnly - Determines what road network is used in the calculation. The network can
include major roads only or all roads. A major road is a main road or highway. If you choose to
use major roads, performance will improve, but accuracy may decrease. The images below
illustrate the behavior of the major roads option. The image on the left shows MajorRoadsOnly
set to true while the image on the right shows MajorRoadsOnly set to false. Notice that the
service uses side streets and other types of secondary roads when calculating the iso response
if MajorRoadsOnly is set to false.