Target namespace Introduction LRMWithOffset

Copyright © 2012 Open Geospatial Consortium 45 includes dual along referents located elsewhere in the same document. Either the reference or the contained element shall be given, but neither both nor none.

9.5 Linear Referencing Offset

9.5.1 Target namespace

All schema components specified in this subclause are in the target namespace: http:www.opengis.netgml3.3lro

9.5.2 Introduction

Linear Referencing Offset includes the specification of linearly referenced locations which can have lateral and vertical offsets in their distance expressions.

9.5.3 LRMWithOffset

complexType name=LRMWithOffsetType complexContent extension base=gmllr:LinearReferencingMethodType sequence element name=offsetUnits type=gml:UomIdentifier element name=positiveLateralOffsetDirection type=gmllro:LateralOffsetDirectionType default=right minOccurs=0 element name=positiveVerticalOffsetDirection type=gmllro:VerticalOffsetDirectionType default=up minOccurs=0 sequence extension complexContent complexType element name=LRMWithOffset type=gmllro:LRMWithOffsetType substitutionGroup=gmllr:LinearReferencingMethod gmllro:LRMWithOffset implements ISO 19148 LRO_LRMWithOffset see ISODIS 19148, 6.4.2. A gmllro:LRMWithOffset specifies the manner in which measurements are made along and optionally laterally offset from a linear element. The element gmllro:offsetUnits specifies the offset units of measure used by the Linear Referencing Method as a gml:UomIdentifier. It is mandatory for Linear Referencing Methods that allow offsets.. This applies to measurements made laterally, vertically or along a vector from the linear element to an offset location. The optional element gmllro:positiveLateralOffsetDirection gives the gmllro:LateralOffsetDirectionType value used as the positive direction for the Linear Referencing Method for lateral measures perpendicular to the linear element. It is only applicable to Linear Referencing Methods that allow offsets. Allowable values are specified by the gmllro:LateralOffsetDirectionType codelist. The default value is right. The optional element gmllro:positiveVerticalOffsetDirection gives the gmllro:VerticalOffsetDirectionType value used as the positive direction for the Linear Referencing Method for vertical measures perpendicular to the linear element. It is only applicable to Linear Referencing 46 Copyright © 2012 Open Geospatial Consortium Methods that allow offsets. Allowable values are specified by the gmllro:VerticalOffsetDirectionType codelist. The default value is up.

9.5.4 LRMWithOffsetPropertyType