LandXML.org 2006 Nathan Crews Principal Schema Architect, LandXML.org Software Researcher, Autodesk.
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LandXML.org 2006 LandXML.org 2006 Nathan Crews Nathan Crews Principal Schema Architect, LandXML.org Principal Schema Architect, LandXML.org Software Researcher, Autodesk Software Researcher, Autodesk
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Transcript of LandXML.org 2006 Nathan Crews Principal Schema Architect, LandXML.org Software Researcher, Autodesk.
LandXML.org 2006LandXML.org 2006
Nathan CrewsNathan CrewsPrincipal Schema Architect, LandXML.orgPrincipal Schema Architect, LandXML.orgSoftware Researcher, AutodeskSoftware Researcher, Autodesk
OutlineOutline
► LandXML.orgLandXML.org MembershipMembership LandXML-1.0 statusLandXML-1.0 status
► LandXML-1.0 Standard AdoptionLandXML-1.0 Standard Adoption Registered Software ApplicationsRegistered Software Applications Government AdoptionGovernment Adoption
► LandXML-1.1 schemaLandXML-1.1 schema What changed?What changed?
► 3D Roads, Construction Staking, eSurvey, EPSG 3D Roads, Construction Staking, eSurvey, EPSG coordinate system supportcoordinate system support
StatusStatus► LandXML Multi-Domain Data InteroperabilityLandXML Multi-Domain Data Interoperability
LandXML.org: Worldwide, LandXML.org: Worldwide, Open OrganizationOpen Organization
► Initiated in December 1999 by former Initiated in December 1999 by former EAS-E initiative members and Autodesk.EAS-E initiative members and Autodesk.
► In March of 2000 we had 26 members.In March of 2000 we had 26 members.►February 2006: LandXML.org has February 2006: LandXML.org has
expanded around the world to expanded around the world to 3232 countriescountries and grown to and grown to 495495 representatives from representatives from 400400 member member companies/government agencies.companies/government agencies.
►No cost or specific obligations to joinNo cost or specific obligations to join..
LandXML.org Goal: LandXML.org Goal: Open Design/Survey Data Open Design/Survey Data
ExchangeExchange► Specify an XML file format for civil Specify an XML file format for civil
engineering design and survey engineering design and survey measurement data for the purposes of:measurement data for the purposes of:
1.1. Transferring engineering design data Transferring engineering design data between producers and consumers.between producers and consumers.
2.2. Providing a data format suitable for long-Providing a data format suitable for long-term data archival.term data archival.
3.3. Providing a standard format for electronic Providing a standard format for electronic design submission.design submission.
LandXMLLandXML
What it means, what it is and What it means, what it is and what can it be used for…what can it be used for…
Land + XML = LandXMLLand + XML = LandXML
►Land = all the engineering and survey Land = all the engineering and survey data used during land development data used during land development projects.projects.
►XML…XML…
XMLXML
►XML= eXML= eXXtensible tensible MMarkup arkup LLanguageanguage►XML is a specially formatted ASCII text XML is a specially formatted ASCII text
file using <elements> or tags.file using <elements> or tags.►HTML is a form of XML.HTML is a form of XML.
<HTML>
<Body>
A simple web page with a link <a href=“www.landxml.org”>LandXML.org</a>
</Body>
</HTML>
What is “LandXML”What is “LandXML”
►A specialized XML data file format A specialized XML data file format containing civil engineering and containing civil engineering and survey measurement data commonly survey measurement data commonly used in the Land Development and used in the Land Development and Transportation Industries.Transportation Industries.
LandXML is a StandardLandXML is a Standard
►LandXML-1.0LandXML-1.0 July 17, 2002 Ratified as an industry standard by LandXML.org.July 17, 2002 Ratified as an industry standard by LandXML.org. Based on W3C XML Schema Recommendation May 2, 2001.Based on W3C XML Schema Recommendation May 2, 2001. LandXML Software Developers Kit 1.0 and documentation.LandXML Software Developers Kit 1.0 and documentation.
►LandXML-1.1LandXML-1.1 Soon to be ratifiedSoon to be ratified LandXML Software Developers Kit 1.1 available now.LandXML Software Developers Kit 1.1 available now.
LandXML-1.0 Data LandXML-1.0 Data ModelModel
LandXML-1.0 Data ModelLandXML-1.0 Data ModelHousekeeping Data & Housekeeping Data &
COGOCOGO► ProjectProject
Project name and description.Project name and description.► ApplicationApplication
Application used to produce the data.Application used to produce the data.► AuthorAuthor
Who created the data.Who created the data.► UnitsUnits
Linear, angular, area, time, temperature, pressure, diameter, volume, flow Linear, angular, area, time, temperature, pressure, diameter, volume, flow and velocity.and velocity.
► Coordinate SystemsCoordinate Systems Grid and Projected coordinate systemsGrid and Projected coordinate systems EPSG (European Petroleum Standards Group) codesEPSG (European Petroleum Standards Group) codes
► Cogo PointsCogo Points The basic 3D point with name, number, description, code and purpose.The basic 3D point with name, number, description, code and purpose.
► Cogo GeometryCogo Geometry Contiguous Lines, circular curves, spirals, irregular lines and chains.Contiguous Lines, circular curves, spirals, irregular lines and chains.
LandXML-1.0 Data ModelLandXML-1.0 Data ModelDesign Geometry DataDesign Geometry Data
► ParcelsParcels Closed parcel coordinate geometryClosed parcel coordinate geometry Area, centroid, owner, class, typeArea, centroid, owner, class, type
► AlignmentsAlignments Road centerline 2D coordinate geometry. Road centerline 2D coordinate geometry. Profiles: vertical design alignments and sampled ground profiles.Profiles: vertical design alignments and sampled ground profiles. Cross Sections: design cross sections and sampled surface Cross Sections: design cross sections and sampled surface
sections.sections. SuperelevationsSuperelevations Station EquationsStation Equations
► SurfacesSurfaces (digital terrain models) (digital terrain models) TIN – The computed Triangulated Irregular Network of 3-point TIN – The computed Triangulated Irregular Network of 3-point
triangle faces.triangle faces. Grid – 4-point grid faces.Grid – 4-point grid faces. Source Data: breaklines, contours and points used to compute Source Data: breaklines, contours and points used to compute
the TIN or GRID.the TIN or GRID.
LandXML-1.0 Data ModelLandXML-1.0 Data ModelDesign Geometry DataDesign Geometry Data
► RoadwaysRoadways (3D road model) (3D road model) Alignments (profiles, cross sections)Alignments (profiles, cross sections) Surfaces (top and sub-surfaces)Surfaces (top and sub-surfaces) PlanFeaturesPlanFeatures Lanes and IntersectionsLanes and Intersections
► PipeNetworksPipeNetworks Stormwater pipes and structures.Stormwater pipes and structures.
► PlanFeaturesPlanFeatures Generic geometric data like fence lines, curbs, Generic geometric data like fence lines, curbs,
building outlines, and planting areas.building outlines, and planting areas.
LandXML-1.0 Data ModelLandXML-1.0 Data ModelSurvey DataSurvey Data
►MonumentsMonuments Survey monument dataSurvey monument data Survey order, class, type, description.Survey order, class, type, description.
►SurveySurvey Raw and reduced survey observations.Raw and reduced survey observations. Optical, EDM and GPS supported.Optical, EDM and GPS supported. Equipment, personnel and data collection Equipment, personnel and data collection
parameters.parameters.
The many things can The many things can you do with LandXML you do with LandXML
data files…data files…
LandXML data can be used LandXML data can be used to:to:
Exchange data between many civil Exchange data between many civil engineering/survey desktop and CAD-based engineering/survey desktop and CAD-based software applications.software applications.
Create engineering reports.Create engineering reports. Import parcels, roads, surfaces into Import parcels, roads, surfaces into
Architectural applications.Architectural applications. Submit online cadastral surveys.Submit online cadastral surveys. Import data into GIS applications.Import data into GIS applications. Send staking data to survey field Send staking data to survey field
instruments.instruments. Create 3D project visualizations.Create 3D project visualizations.
Field Staking
Design Creation
Design Validation IHSDM
LandXML
Design Reports
Design Visualization / Analysis Cost Estimation
LandXML supported by LandXML supported by many software applicationsmany software applications
►48+48+ Registered Software Applications from Registered Software Applications from Autodesk, Bentley, CAiCE, Carlson, Eagle Autodesk, Bentley, CAiCE, Carlson, Eagle Point, Leica GeoSystems, MircroSurvey, Point, Leica GeoSystems, MircroSurvey, Trimble Navigation, Tripod Data Systems, Trimble Navigation, Tripod Data Systems, Topcon, the U.S. FHWA and many more.Topcon, the U.S. FHWA and many more.
►Adopted for use by many governments Adopted for use by many governments around the world.around the world.
Government UsageGovernment Usage
►LandXML is the design data schema LandXML is the design data schema for the emerging AASHTO for the emerging AASHTO transportation XML industry standards.transportation XML industry standards.
►Survey data standard for Land Survey data standard for Land Information New Zealand’s Landonline.Information New Zealand’s Landonline.
►Collaboration in Slovenia as a national Collaboration in Slovenia as a national 3D road model standard.3D road model standard.
►Used in a Philippine Digital Land Used in a Philippine Digital Land Survey Management systemSurvey Management system
LandonlineLandonlineLand Information New Land Information New
ZealandZealandLandonline LandXML Cadastral data flowLandonline LandXML Cadastral data flow
External Survey
Software
Landonline
2. Extract1. Search
3. Prepare
4. Pre-validate
5. Submit
LandXML File
LandXML File
U.S. FHWA IHSDM U.S. FHWA IHSDM SoftwareSoftware
Adoption In ProcessAdoption In Process
►Australia eSurvey online cadastral survey Australia eSurvey online cadastral survey system based on LandXML-1.1.system based on LandXML-1.1.
►Finland InfraModel governments Finland InfraModel governments standards.standards.
►AASHTO SDMSAASHTO SDMS►Ongoing discussions and projects in:Ongoing discussions and projects in:
ThailandThailand JapanJapan CanadaCanada Australia, roadsAustralia, roads
Standards CollaborationStandards Collaboration
►TransXMLTransXML Design data schemaDesign data schema
►Open Geospatial ConsortiumOpen Geospatial Consortium CAD to GISCAD to GIS The GeoWebThe GeoWeb
► IAI/IFC IAI/IFC IFCRoad ProjectIFCRoad Project
LandXML-1.1LandXML-1.1
LandXML-1.1LandXML-1.1
►The intent for this revision was to make The intent for this revision was to make corrections and add support for corrections and add support for additional data based on real world additional data based on real world experience. experience.
►1.0 and 1.1 designed to be forward and 1.0 and 1.1 designed to be forward and backward compatible! backward compatible!
►No drastic model changes that force No drastic model changes that force significant work to update the existing significant work to update the existing applications.applications.
LandXML-1.1 ChangesLandXML-1.1 Changes
► Improve documentation to eliminate Improve documentation to eliminate ambiguous data definitions.ambiguous data definitions.
► Added EPSG coordinate system names to Added EPSG coordinate system names to <CoordinateSystem> (shared by Open <CoordinateSystem> (shared by Open Geospatial Consortium and GML schemas).Geospatial Consortium and GML schemas).
► Clarify zenithAngle definition in the survey Clarify zenithAngle definition in the survey data.data.
► Add support for PI based alignment definitions.Add support for PI based alignment definitions.► Add railway cant (superelevation) data to Add railway cant (superelevation) data to
<Alignment>.<Alignment>.
LandXML-1.1 ChangesLandXML-1.1 Changes
► Add data structure to support additional electronic Add data structure to support additional electronic Australian cadastral survey system.Australian cadastral survey system.
► Allow duplicate “name” attributes across Allow duplicate “name” attributes across collections of same element type.collections of same element type.
► Add road design cross section definitions to Add road design cross section definitions to Alignments.Alignments.
► Add support for non-linear road design cross Add support for non-linear road design cross section transitions.section transitions.
► Adjust the <PipeNetwork> structure to better Adjust the <PipeNetwork> structure to better support modern hydraulic materials such as curved support modern hydraulic materials such as curved pipe.pipe.
► Miscellaneous minor schema validation/model Miscellaneous minor schema validation/model changes. changes.
LandXML-1.1 3D Road LandXML-1.1 3D Road ModelModel
LandXML-1.1 Road ModelLandXML-1.1 Road Model
►Design cross sections model entire 3D Design cross sections model entire 3D road structure.road structure.
►Provides data well suited for road Provides data well suited for road construction staking.construction staking.
►Enables quantities area/volume Enables quantities area/volume calculations for each section material.calculations for each section material.
►Supports non-linear transitions.Supports non-linear transitions.
3D Road Modeling3D Road Modeling
Design Cross SectionsDesign Cross Sections
Right Travel laneCurb and gutter
sidewalk
bufferditch
PGL
Design Cross SectionsDesign Cross Sections
12
34
Right side closed volume surface points are defined clockwise from top down. Left side closed volume surfaces are defined counter-clockwise
Connection points
Non-closed surfacesDefined by slope and horizontal distance
TransitionsTransitions
Road design cross section Road design cross section conventionsconventions
► All offset values are measured from the PGL and All offset values are measured from the PGL and are horizontal measurements.are horizontal measurements.
► + offsets to the right, - to the left of and way + offsets to the right, - to the left of and way from the PGL.from the PGL.
► + slopes increase from PGL, - slopes decrease.+ slopes increase from PGL, - slopes decrease.► Right side closed volume surface point are Right side closed volume surface point are
defined clockwise from the top most point down.defined clockwise from the top most point down.► Left side closed volume surface point are Left side closed volume surface point are
defined counter-clockwise from the top most defined counter-clockwise from the top most point down. point down.
Multi-Domain Data Multi-Domain Data InteroperabilityInteroperability
► LandXML is proving to be useful outside the LandXML is proving to be useful outside the civil engineering/survey domain.civil engineering/survey domain. ArchitectsArchitects
► Buildings do connect to the ground, utlities and Buildings do connect to the ground, utlities and roadways.roadways.
Geospatial applicationsGeospatial applications► Import new design / survey projects quickly and Import new design / survey projects quickly and
efficiently.efficiently.► Data exchange for site and road maintenance.Data exchange for site and road maintenance.
Traffic modelingTraffic modeling► Model the proposed road, analyze traffic capacity and Model the proposed road, analyze traffic capacity and
simulate impact.simulate impact.
LandXML: A Ready Source LandXML: A Ready Source of GIS Dataof GIS Data
LandXMLFile
CAD
DesignAnalysis
Survey Data Collection
GIS MappingIntegration
GIS Analysis
GIS Visualization
SummarySummary
►The LandXML-1.0 standard is The LandXML-1.0 standard is supported by many applications.supported by many applications.
►LandXML-1.1 improves the usefulness LandXML-1.1 improves the usefulness of the design data for roads, online of the design data for roads, online survey systems and GIS survey systems and GIS interoperability.interoperability.
►The work continues…The work continues…
From CAD to GIS in 2 From CAD to GIS in 2 SecondsSeconds
