Pitney Bowes MapXtreme - Manual (Page 374)

Chapter 20: Routing
Iso Routing (Drive-Time and Drive-Distance)
MapXtreme v7.1 381 Developer Guide
• MaxOffRoadDistance - Specifies the maximum amount of distance to come off the road
network when using the ambient speed. The default setting for this property is no limit, allowing
off-road travel to occur to the maximum of the isoChrone. The server may not be able to
generate a response for a maximum off-road distance set to a very small value.
• ReturnAccesibleNodes - Specifies the type of isogram or feature to be returned from an
isoChrone request be a set of nodes (MultiPoint). By default, ReturnAccesibleNodes is False.
When this property is true, all of the points along the road network that can be reached for the
isoChrone calculation will be returned.
• ReturnGeometry - Specifies the type of isogram or feature to be returned from an isoChrone
request be a geometry (MultiPolygon). By default, ReturnGeometry is true. False will return all of
the points along the road network that can be reached for the isoChrone calculation.
• ReturnHoles - Specifies whether or not to return holes in the response. Holes are areas within
the larger boundary that cannot be reached within the desired time or distance, based on the
road network. These pockets of territory are often neighborhoods of local roads that are
cumbersome to traverse. Holes can be returned as is, or removed entirely. This setting will only
apply if ReturnGeometry is set to true (default). If this property is not specified, the default
setting, false, will be used.
• ReturnIslands - Specifies whether or not to return islands in the response. Islands are small
areas outside the main boundary that can be reached within the desired time or distance. These
areas are frequently located off exit ramps of major highways. Islands can be returned as is, or
removed entirely. This setting will only apply if ReturnGeometry is set to true (default). If this
property is not specified, the default setting, false, will be used.
• SimplificationFactor - Specifies the reduction factor for polygon complexity. The simplification
factor indicates what percentage of the original points should be returned or that the resulting
polygon should be based on. The polygon or set of points may contain many points. The
simplification factor is a decimal number between 0 and 1.0 (1 being 100 percent and 0.01 being
1 percent). Lower numbers mean lower storage and lower transmission times. This setting will
only apply if geometry is the result type. If this property is not specified, the default setting 0.05 (5
percent) will be used. The images below illustrate the behavior of the simplification factor option.
The image on the left shows the simplification factor set to 0.01 while the image on the right
shows the simplification factor set to 1.
• TimeOut - Specifies the amount of time allowed for the server to create the isogram. The default
value for this property is 600 seconds (10 minutes).