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Used by
Element diggs:LinearReferencingMethodType / diggs:name
Namespace http://diggsml.org/schemas/3
Annotations
 
The name property.
Diagram
DiagramLinearReferencing_xsd_Simple_Type_diggs_LinearReferencingNameTypeEnumType.tmp#LinearReferencingNameTypeEnumType
Type diggs:LinearReferencingNameTypeEnumType
Properties
content simple
Source
 
<element name="name" type="diggs:LinearReferencingNameTypeEnumType">
  <annotation>
    <documentation>The name property.</documentation>
  </annotation>
</element>
Element diggs:LinearReferencingMethodType / diggs:type
Namespace http://diggsml.org/schemas/3
Annotations
 
The type/category of linear referencing method per 
ISO 19148 §6.2.3 (absolute, relative, interpolative).
                                
- absolute: Distance from fixed origin (typically first coordinate)
- relative: Distance from a specified referent point
- interpolative: Position determined by interpolation between 
  known control points
Diagram
DiagramLinearReferencing_xsd_Simple_Type_diggs_LinearReferencingMethodTypeEnumType.tmp#LinearReferencingMethodTypeEnumType
Type diggs:LinearReferencingMethodTypeEnumType
Properties
content simple
Source
 
<element name="type" type="diggs:LinearReferencingMethodTypeEnumType">
  <annotation>
    <documentation>The type/category of linear referencing method per ISO 19148 §6.2.3 (absolute, relative, interpolative). - absolute: Distance from fixed origin (typically first coordinate) - relative: Distance from a specified referent point - interpolative: Position determined by interpolation between known control points</documentation>
  </annotation>
</element>
Element diggs:LinearReferencingMethodType / diggs:units
Namespace http://diggsml.org/schemas/3
Annotations
 
Default units of measure for distance measurements along 
the linear element using this method. This is the unit for 
the first coordinate value (distance along).
                                
Common values: ft, m, km, mi
Diagram
DiagramMeasureTypes_xsd_Simple_Type_diggs_LengthUomEnumType.tmp#LengthUomEnumType
Type diggs:LengthUomEnumType
Properties
content simple
Source
 
<element name="units" type="diggs:LengthUomEnumType">
  <annotation>
    <documentation>Default units of measure for distance measurements along the linear element using this method. This is the unit for the first coordinate value (distance along). Common values: ft, m, km, mi</documentation>
  </annotation>
</element>
Element diggs:LinearReferencingMethodType / diggs:positiveDirection
Namespace http://diggsml.org/schemas/3
Annotations
 
Convention for positive measurement direction along the 
linear element. In DIGGS, typically "increasing" (along 
coordinate order). Semantic labels (downward, upward, forward) 
provide clarity but don't change the fundamental 
coordinate-order-based direction.
                                
Values:
- increasing: Default, follows coordinate order
- downward: Semantic label for boreholes (positive is deeper)
- upward: Semantic label (positive is shallower)
- forward: Semantic label for horizontal features
Diagram
DiagramLinearReferencing_xsd_Simple_Type_diggs_PositiveDirectionEnumType.tmp#PositiveDirectionEnumType
Type diggs:PositiveDirectionEnumType
Properties
content simple
minOccurs 0
default increasing
Facets
enumeration increasing 
Positive direction follows coordinate order from first to last.
This is the DIGGS standard and default convention.
enumeration downward 
Semantic label indicating positive is downward (deeper). 
Common for boreholes where first coordinate is collar and 
last is bottom of hole. Measurements increase with depth.
enumeration upward 
Semantic label indicating positive is upward (shallower). 
May be used for core logging from bottom to top, or for 
elevation-based referencing systems.
enumeration forward 
Semantic label for horizontal features indicating positive 
is in the forward direction of survey or alignment.
Common for transects, pipelines, and tracklines.
Source
 
<element name="positiveDirection" type="diggs:PositiveDirectionEnumType" minOccurs="0" default="increasing">
  <annotation>
    <documentation>Convention for positive measurement direction along the linear element. In DIGGS, typically "increasing" (along coordinate order). Semantic labels (downward, upward, forward) provide clarity but don't change the fundamental coordinate-order-based direction. Values: - increasing: Default, follows coordinate order - downward: Semantic label for boreholes (positive is deeper) - upward: Semantic label (positive is shallower) - forward: Semantic label for horizontal features</documentation>
  </annotation>
</element>
Element diggs:LinearReferencingMethodType / diggs:constraint
Namespace http://diggsml.org/schemas/3
Annotations
 
A string value that allows for the specification of constraints imposed by this LRM. For
example, a referenceFoot Linear Referencing Method can specify that referents cannot be of type "line start" or "Line end".
Diagram
Diagram
Type string
Properties
content simple
minOccurs 0
maxOccurs unbounded
Source
 
<element maxOccurs="unbounded" minOccurs="0" name="constraint" type="string">
  <annotation>
    <documentation>A string value that allows for the specification of constraints imposed by this LRM. For example, a referenceFoot Linear Referencing Method can specify that referents cannot be of type "line start" or "Line end".</documentation>
  </annotation>
</element>
Element diggs:LinearReferencingMethodType / diggs:offsetParameters
Namespace http://diggsml.org/schemas/3
Annotations
 
Optional parameters for methods that support lateral offset 
from the linear element centerline, such as for Transect or 
TrialPit sampling features.
                                
When PRESENT: This method supports 2D positioning
- LinearSRS using this method has srsDimension = 2
- Coordinates are encoded as: <gml:pos>distance offset</gml:pos>
- First value = distance along (in 'units')
- Second value = lateral offset (in 'offsetParameters/offsetUnits')
- Positive offset direction defined by 'offsetParameters/offsetDirection'
                                
When ABSENT: This method supports 1D positioning only
- LinearSRS using this method has srsDimension = 1
- Coordinates are encoded as: <gml:pos>distance</gml:pos>
                                
Used for:
- Transects with offset soil sampling
- Geophysical tracklines with side-scan sonar swaths
- Pipelines with offset monitoring points
- Survey lines with offset test pits
- Trial or test pits with offset sampling locations
Diagram
Diagramgml3_2Profile_diggs_xsd_Attribute_Group_gml_AssociationAttributeGroup.tmp#AssociationAttributeGroupLinearReferencing_xsd_Element_diggs_OffsetParameters.tmp#OffsetParametersLinearReferencing_xsd_Complex_Type_diggs_OffsetParametersPropertyType.tmp#OffsetParametersPropertyType
Type diggs:OffsetParametersPropertyType
Properties
content complex
minOccurs 0
Model
Children diggs:OffsetParameters
Instance
 
<diggs:offsetParameters xlink:actuate="" xlink:arcrole="" xlink:href="" nilReason="" xlink:role="" xlink:show="" xlink:title="" xlink:type="simple" xmlns:diggs="http://diggsml.org/schemas/3">
  <diggs:OffsetParameters gml:id="">{1,1}</diggs:OffsetParameters>
</diggs:offsetParameters>
Attributes
QName Type Fixed Use Annotation
nilReason gml:NilReasonType optional
xlink:actuate restriction of string optional 
The 'actuate' attribute is used to communicate the desired timing 
of traversal from the starting resource to the ending resource; 
it's value should be treated as follows:
onLoad - traverse to the ending resource immediately on loading 
         the starting resource 
onRequest - traverse from the starting resource to the ending 
            resource only on a post-loading event triggered for 
            this purpose 
other - behavior is unconstrained; examine other markup in link 
        for hints 
none - behavior is unconstrained
xlink:arcrole anyURI optional
xlink:href anyURI optional
xlink:role anyURI optional
xlink:show restriction of string optional 
The 'show' attribute is used to communicate the desired presentation 
of the ending resource on traversal from the starting resource; it's 
value should be treated as follows: 
new - load ending resource in a new window, frame, pane, or other 
      presentation context
replace - load the resource in the same window, frame, pane, or 
          other presentation context
embed - load ending resource in place of the presentation of the 
        starting resource
other - behavior is unconstrained; examine other markup in the 
        link for hints 
none - behavior is unconstrained
xlink:title string optional
xlink:type string simple optional
Source
 
<element name="offsetParameters" type="diggs:OffsetParametersPropertyType" minOccurs="0">
  <annotation>
    <documentation>Optional parameters for methods that support lateral offset from the linear element centerline, such as for Transect or TrialPit sampling features. When PRESENT: This method supports 2D positioning - LinearSRS using this method has srsDimension = 2 - Coordinates are encoded as: <gml:pos>distance offset</gml:pos> - First value = distance along (in 'units') - Second value = lateral offset (in 'offsetParameters/offsetUnits') - Positive offset direction defined by 'offsetParameters/offsetDirection' When ABSENT: This method supports 1D positioning only - LinearSRS using this method has srsDimension = 1 - Coordinates are encoded as: <gml:pos>distance</gml:pos> Used for: - Transects with offset soil sampling - Geophysical tracklines with side-scan sonar swaths - Pipelines with offset monitoring points - Survey lines with offset test pits - Trial or test pits with offset sampling locations</documentation>
  </annotation>
</element>
Complex Type diggs:LinearReferencingMethodType
Namespace http://diggsml.org/schemas/3
Annotations
 
Type definition for Linear Referencing Method per ISO 19148 §6.2.
                
Specifies how positions are determined along a linear feature. 
DIGGS LR methods rely on the LinearExtent geometry to establish the 
spatial framework. The method defines how measures are computed from 
or applied to that geometry.
                
Methods can be 1-dimensional (distance along only) or 2-dimensional 
(distance along + lateral offset). The presence of offsetParameters 
determines the dimensionality:
                
- offsetParameters absent: 1D method, srsDimension=1, gml:pos="distance"
- offsetParameters present: 2D method, srsDimension=2, 
  gml:pos="distance offset"
                
DIGGS examples:
- 1D: Borehole depth from ground surface
- 1D: Well measured depth from casing top
- 2D: Transect with offset sampling
- 2D: Geophysical trackline with swath data
Diagram
Diagramgml3_2Profile_diggs_xsd_Attribute_gml_id.tmp#idgml3_2Profile_diggs_xsd_Element_gml_description.tmp#descriptiongml3_2Profile_diggs_xsd_Element_gml_descriptionReference.tmp#descriptionReferencegml3_2Profile_diggs_xsd_Element_gml_identifier.tmp#identifiergml3_2Profile_diggs_xsd_Element_gml_name.tmp#namegml3_2Profile_diggs_xsd_Element_Group_gml_StandardObjectProperties.tmp#StandardObjectPropertiesgml3_2Profile_diggs_xsd_Complex_Type_gml_AbstractGMLType.tmp#AbstractGMLTypegml3_2Profile_diggs_xsd_Attribute_gml_id.tmp#idgml3_2Profile_diggs_xsd_Element_gml_description.tmp#descriptiongml3_2Profile_diggs_xsd_Element_gml_descriptionReference.tmp#descriptionReferencegml3_2Profile_diggs_xsd_Element_gml_identifier.tmp#identifiergml3_2Profile_diggs_xsd_Element_gml_name.tmp#namegml3_2Profile_diggs_xsd_Complex_Type_gml_DefinitionBaseType.tmp#DefinitionBaseTypegml3_2Profile_diggs_xsd_Element_gml_remarks.tmp#remarksgml3_2Profile_diggs_xsd_Complex_Type_gml_DefinitionType.tmp#DefinitionTypegml3_2Profile_diggs_xsd_Complex_Type_gml_IdentifiedObjectType.tmp#IdentifiedObjectTypeLinearReferencing_xsd_Complex_Type_diggs_LinearReferencingMethodType.tmp#LinearReferencingMethodType_nameLinearReferencing_xsd_Complex_Type_diggs_LinearReferencingMethodType.tmp#LinearReferencingMethodType_typeLinearReferencing_xsd_Complex_Type_diggs_LinearReferencingMethodType.tmp#LinearReferencingMethodType_unitsLinearReferencing_xsd_Complex_Type_diggs_LinearReferencingMethodType.tmp#LinearReferencingMethodType_positiveDirectionLinearReferencing_xsd_Complex_Type_diggs_LinearReferencingMethodType.tmp#LinearReferencingMethodType_constraintLinearReferencing_xsd_Complex_Type_diggs_LinearReferencingMethodType.tmp#LinearReferencingMethodType_offsetParameters
Type extension of gml:IdentifiedObjectType
Type hierarchy
Used by
Model
Children diggs:constraint, diggs:name, diggs:offsetParameters, diggs:positiveDirection, diggs:type, diggs:units, gml:description, gml:descriptionReference, gml:identifier, gml:name, gml:remarks
Attributes
QName Type Use Annotation
gml:id ID required 
Database handle for the object. It is of XML type ID, so is constrained to be
unique in the XML document within which it occurs. An external identifier for the object in
the form of a URI may be constructed using standard XML and XPointer methods. This is done
by concatenating the URI for the document, a fragment separator, and the value of the id
attribute.
Source
 
<complexType name="LinearReferencingMethodType">
  <annotation>
    <documentation>Type definition for Linear Referencing Method per ISO 19148 §6.2. Specifies how positions are determined along a linear feature. DIGGS LR methods rely on the LinearExtent geometry to establish the spatial framework. The method defines how measures are computed from or applied to that geometry. Methods can be 1-dimensional (distance along only) or 2-dimensional (distance along + lateral offset). The presence of offsetParameters determines the dimensionality: - offsetParameters absent: 1D method, srsDimension=1, gml:pos="distance" - offsetParameters present: 2D method, srsDimension=2, gml:pos="distance offset" DIGGS examples: - 1D: Borehole depth from ground surface - 1D: Well measured depth from casing top - 2D: Transect with offset sampling - 2D: Geophysical trackline with swath data</documentation>
  </annotation>
  <complexContent>
    <extension base="gml:IdentifiedObjectType">
      <sequence>
        <element name="name" type="diggs:LinearReferencingNameTypeEnumType">
          <annotation>
            <documentation>The name property.</documentation>
          </annotation>
        </element>
        <element name="type" type="diggs:LinearReferencingMethodTypeEnumType">
          <annotation>
            <documentation>The type/category of linear referencing method per ISO 19148 §6.2.3 (absolute, relative, interpolative). - absolute: Distance from fixed origin (typically first coordinate) - relative: Distance from a specified referent point - interpolative: Position determined by interpolation between known control points</documentation>
          </annotation>
        </element>
        <element name="units" type="diggs:LengthUomEnumType">
          <annotation>
            <documentation>Default units of measure for distance measurements along the linear element using this method. This is the unit for the first coordinate value (distance along). Common values: ft, m, km, mi</documentation>
          </annotation>
        </element>
        <element name="positiveDirection" type="diggs:PositiveDirectionEnumType" minOccurs="0" default="increasing">
          <annotation>
            <documentation>Convention for positive measurement direction along the linear element. In DIGGS, typically "increasing" (along coordinate order). Semantic labels (downward, upward, forward) provide clarity but don't change the fundamental coordinate-order-based direction. Values: - increasing: Default, follows coordinate order - downward: Semantic label for boreholes (positive is deeper) - upward: Semantic label (positive is shallower) - forward: Semantic label for horizontal features</documentation>
          </annotation>
        </element>
        <element maxOccurs="unbounded" minOccurs="0" name="constraint" type="string">
          <annotation>
            <documentation>A string value that allows for the specification of constraints imposed by this LRM. For example, a referenceFoot Linear Referencing Method can specify that referents cannot be of type "line start" or "Line end".</documentation>
          </annotation>
        </element>
        <element name="offsetParameters" type="diggs:OffsetParametersPropertyType" minOccurs="0">
          <annotation>
            <documentation>Optional parameters for methods that support lateral offset from the linear element centerline, such as for Transect or TrialPit sampling features. When PRESENT: This method supports 2D positioning - LinearSRS using this method has srsDimension = 2 - Coordinates are encoded as: <gml:pos>distance offset</gml:pos> - First value = distance along (in 'units') - Second value = lateral offset (in 'offsetParameters/offsetUnits') - Positive offset direction defined by 'offsetParameters/offsetDirection' When ABSENT: This method supports 1D positioning only - LinearSRS using this method has srsDimension = 1 - Coordinates are encoded as: <gml:pos>distance</gml:pos> Used for: - Transects with offset soil sampling - Geophysical tracklines with side-scan sonar swaths - Pipelines with offset monitoring points - Survey lines with offset test pits - Trial or test pits with offset sampling locations</documentation>
          </annotation>
        </element>
      </sequence>
    </extension>
  </complexContent>
</complexType>
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