The Finnish ‘DigiRoad’ Dataset in EuroRoadS Schema

Lassi LehtoFinnish Geodetic Institute

AgendaDigiRoadSchema mappingTranslating WFS experimentToolsFurther tests

DigiRoad

New dataset of the Finnish road networkContains all roads and streets

Also cycling and pedestrian pathsCentralised database 555 € / whole country, for non-commercial use

ContributorsFinnish Road AdministrationNational Land SurveyLocal authoritiesActual operation by private sector

http://www.digiroad.fi/en_GB/

2

2

DigiRoad

GDF –basedDelivery in two forms

1. With linear referencing (dynamic segmentation)2. With directly attached attributes

1Segment - Speed limit

TrafficElement - Functional class Attributes

copied

Attributes copied

Geometries copied

Schema mappingDone manuallyBased mostly on

Textual description of DigiRoadEuroRoadS D 6.3: Road Network Information ModelEuroRoadS GML Application Schema 3.1

No UML available for DigiRoadNo tools to work with Visio, EA, RR filesXMI in Eclipse with XML Modeler

Schema mapping

TrafficElement ER_RoadLinkroadType = 1 or 2 or 3

ER_FerryLinkroadType = 6

Schema mapping

TrafficElement ER_RoadLink

ER_ObjectIdreference_ID

GUID of the original trafficElement - not unique in delivery form 2

curvethe_geom

lat / lon coordinates projected coordinatesMultiLineString LineString

Schema mapping

TrafficElement ER_RoadLink

level”ER_RoadElement”

Schema mapping

TrafficElement ER_RoadLink

formOfWaytype1 := ER_Motorway2 := ER_MultiCarriageway3 := ER_SingleCarriageway4 := ER_RoundaboutCircle6 := ER_EncosedTrafficArea8 := ER_SlipRoad10 := ER_ServiceRoad13 := other: Area reserved for pedestrians14 := other: Cycling path17 := other: Moottoriliikennetien osa

Schema mapping

TrafficElement ER_RoadLink

nationalRoadClassnational1 := MainRoadS2 := FirstClass3 := SecondClass4 := ThirdClass0 := UndefinedNationalRoadClass

Schema mapping

Segment

ER_RoadLink

ER_SpeedLimit

speedLimit

TrafficElement

Geometric matching

Schema mapping

TrafficElement ER_FerryLink

level”ER_FerryConnection”

formOfFerry”ER_ShipOrHovercraft”

roadType = 6

Schema mapping

Segment ER_RoadNodedynType = 9

ER_ObjectIdreference_ID

level”ER_Junction”

formOfNode”other: TrafficLight”

locationthe_geom

lat / lon coordinates projected coordinatesMultiLineString Point

Translating WFS

PostGISPostgreSQL

GeoServer

XSLT-QueryXSLT-GML

WFS-TXalan

JTS

WMSXalan

XSLTGML-SVG

Xerces

PerformanceWhen geometric matching included

1.5 ms / Feature with a small dataset (0.1 MB) 3.1 ms / Feature with a big dataset (1.5 MB)

Without geometric operationsNearly constant 1.0 ms / Feature

2.3 s

Further experimentsAltova MapForce

Further experimentsStreaming Transformations for XML (STX)

SAX-basedOnly local operationsBig documents not a problemFast

Java implementation: Joosthttp://stx.sourceforge.net/