Configure Polyline Quality

The quality of a polyline can be described in the following terms:

The number of points that make up the polyline

The more points there are, the smoother the polyline (especially in curves).

The floating-point precision of the points

Points are specified as latitude and longitude values, which are represented in single-precision floating-point format. This works well for small values (which can be represented precisely), but precision decreases as values increase because of floating-point rounding errors.

Specifying polyline quality

When you call the ComputeRoutes() method, you use a PolylineQuality enumeration value to specify the quality of the polyline.

Use the HIGH_QUALITY value when you want to create a polyline composed of the maximum number of points, to produce a polyline of the highest resolution. This increased quality comes at the expense of response latency.

Use the OVERVIEW value when you want to create a low-resolution overview of the route, which is a polyline composed of a minimal number of points. This option produces responses with the lowest latency.

Example

The following example demonstrates how to set the polyline quality in the request body.

 { 
 "origin" 
 : 
 { 
 "location" 
 : 
 { 
 "latLng" 
 : 
 { 
 "latitude" 
 : 
 37.419734 
 , 
 "longitude" 
 :- 
 122.0827784 
 } 
 } 
 }, 
 "destination" 
 : 
 { 
 "location" 
 : 
 { 
 "latLng" 
 : 
 { 
 "latitude" 
 : 
 37.417670 
 , 
 "longitude" 
 :- 
 122.079595 
 } 
 } 
 }, 
  "polylineQuality" 
 : 
 "HIGH_QUALITY" 
 }