com.graphhopper.routing.util

Class UrbanDensityCalculator

java.lang.Object

com.graphhopper.routing.util.UrbanDensityCalculator

public class UrbanDensityCalculator
extends Object

Constructor Summary

Constructors

Constructor and Description
UrbanDensityCalculator()

Method Summary

Modifier and Type	Method and Description
static void	calcUrbanDensity(Graph graph, EnumEncodedValue<UrbanDensity> urbanDensityEnc, EnumEncodedValue<RoadClass> roadClassEnc, BooleanEncodedValue roadClassLinkEnc, double residentialAreaRadius, double residentialAreaSensitivity, double cityAreaRadius, double cityAreaSensitivity, int threads) Calculates the urban density (rural/residential/city) for all edges of the graph.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UrbanDensityCalculator

public UrbanDensityCalculator()

Method Detail

calcUrbanDensity

public static void calcUrbanDensity(Graph graph,
                                    EnumEncodedValue<UrbanDensity> urbanDensityEnc,
                                    EnumEncodedValue<RoadClass> roadClassEnc,
                                    BooleanEncodedValue roadClassLinkEnc,
                                    double residentialAreaRadius,
                                    double residentialAreaSensitivity,
                                    double cityAreaRadius,
                                    double cityAreaSensitivity,
                                    int threads)

Calculates the urban density (rural/residential/city) for all edges of the graph. First a weighted road density is calculated for every edge to determine whether it belongs to a residential area. In a second step very dense residential areas are classified as 'city'.

Parameters:

residentialAreaRadius - radius used for residential area calculation in meters

residentialAreaSensitivity - Use higher values if there are too many residential areas that are not recognized. Use smaller values if there are too many non-residential areas that are classified as residential.

cityAreaRadius - in meters, see residentialAreaRadius

cityAreaSensitivity - similar to residentialAreaSensitivity, but for the city classification

threads - number of threads used to calculate the road densities