org.opentripplanner.api.resource

Class SimpleIsochrone

java.lang.Object

org.opentripplanner.api.common.RoutingResource

org.opentripplanner.api.resource.SimpleIsochrone

@Path(value="/routers/{routerId}/simpleIsochrone")
public class SimpleIsochrone
extends RoutingResource

This class provides a vector isochrone generator for places without good OSM street connectivity, or for graphs that are too large-scale to bother with modeling streets (e.g. all of China). It assumes constant speed through both streets and "free space" around vertices, yielding isochrones that are the union of many circles. The origin snapping option used here (connect to all stations within M meters of a lat/lon) should be made into a standard query option in OTP. Instead of specifying an origin station search radius, it could be more coherent to use all stations within (maxIsochroneTime * speed) meters, and apply a travel time to reach them. The GET methods both use makeContours which in turn uses makePoints (where range checking occurs). Putting "@Setter" on all the parameters would allow resource classes to be used outside Jersey.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SimpleIsochrone.MinMap<K,V extends Comparable<V>> A HashMap that has been extended to track the greatest or smallest value for each key.

Field Summary

Fields inherited from class org.opentripplanner.api.common.RoutingResource

arriveBy, bannedAgencies, bannedRoutes, bannedStops, bannedStopsHard, bannedTrips, batch, bikeBoardCost, bikeSpeed, bikeSwitchCost, bikeSwitchTime, clampInitialWait, date, disableRemainingWeightHeuristic, flexFlagStopBufferSize, flexIgnoreDrtAdvanceBookMin, flexUseEligibilityServices, flexUseReservationServices, fromPlace, ignoreRealtimeUpdates, intermediatePlaces, maxPreTransitTime, maxTransfers, maxWalkDistance, minTransferTime, modes, nonpreferredTransferPenalty, numItineraries, optimize, otherThanPreferredRoutesPenalty, otpServer, preferredAgencies, preferredRoutes, reverseOptimizeOnTheFly, routerId, showIntermediateStops, startTransitStopId, startTransitTripId, time, toPlace, transferPenalty, triangleSafetyFactor, triangleSlopeFactor, triangleTimeFactor, unpreferredAgencies, unpreferredRoutes, waitAtBeginningFactor, waitReluctance, walkBoardCost, walkReluctance, walkSpeed, wheelchair, whiteListedAgencies, whiteListedRoutes

Constructor Summary

Constructors

Constructor and Description
SimpleIsochrone()

Method Summary

Modifier and Type	Method and Description
javax.ws.rs.core.Response	geoJsonGet()
javax.ws.rs.core.Response	zippedShapefileGet(boolean stream)

Methods inherited from class org.opentripplanner.api.common.RoutingResource

buildRequest

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleIsochrone

public SimpleIsochrone()

Method Detail

geoJsonGet

@GET
 @Produces(value="application/json")
public javax.ws.rs.core.Response geoJsonGet()
                                                                               throws Exception

Returns:

Evenly spaced travel time contours (isochrones) as GeoJSON.

Throws:

Exception

zippedShapefileGet

@GET
 @Produces(value="application/x-zip-compressed")
public javax.ws.rs.core.Response zippedShapefileGet(@QueryParam(value="stream") @DefaultValue(value="true")
                                                                                                          boolean stream)
                                                                                                   throws Exception

Returns:

Evenly spaced travel time contours (isochrones) as a zipped shapefile.

Throws:

Exception