Module Documentation: eml-spatialVector

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The eml-spatialVector module - Logical information about non-gridded geospatial image data

The eml-spatialVector module allows for the description of spatial objects in a GIS system that are not defined in a regularly gridded pattern. These geometries include points and vectors and the relationships among them. Specific attributes of a spatial vector can be documented here including the vector's geometry type, count and topology level.

Module details

Recommended Usage: all spatial datasets that contain spatial data entities represented as vector features.
Stand-alone: yes
Imports: eml-documentation, eml-spatialReference, eml-entity, eml-resource, eml-attribute, eml-constraint
Imported By:
View an image of the schema: eml-spatialVector image

Element Definitions:

spatialVector 

This element has no default value.
Content of this field: Description of this field:
Type: SpatialVectorType
Description of a spatial data entity based on features represented by vectors

attributeList 

This element has no default value.
Content of this field: Description of this field:
Type: att:AttributeListType
The list of attributes associated with this entity. For more information see the eml-attribute module.

constraint 

This element has no default value.
Content of this field: Description of this field:
Type: con:ConstraintType
Description of any relational constraints on this entity. For more information see the eml-constraint module.

geometry 

This element has no default value.
Content of this field: Description of this field:
Type: GeometryType
Geometric feature classification is based on an enumeration of simple feature classes defined by the OpenGIS consortium and implemented in Geographic Markup Language as simple feature types.
Example(s):
polygon

geometricObjectCount 

This element has no default value.
Content of this field: Description of this field:
Type: res:NonEmptyStringType
Total number of the geometric objects occurring in the dataset.
Example(s):
24

topologyLevel 

This element has no default value.
Content of this field: Description of this field:
Type: TopologyLevel
This element describes the relative complexity of the geometric information in the data file.
Example(s):
geometryOnly

spatialReference 

This element has no default value.
Content of this field: Description of this field:
Type: spref:SpatialReferenceType

horizontalAccuracy 

This element has no default value.
Content of this field: Description of this field:
Type: DataQuality
Horizontal positional accuracy of the data expressed as either text or quantitative assessment.

verticalAccuracy 

This element has no default value.
Content of this field: Description of this field:
Type: DataQuality
Vertical positional accuracy of the data expressed as either text or quantitative assessment.

accuracyReport 

This element has no default value.
Content of this field: Description of this field:
Type: res:NonEmptyStringType
A text statement of the data quality, included the means by which it was determined.

quantitativeAccuracyReport 

This element has no default value.
Content of this field: Description of this field:
Elements: Use: How many:
A sequence of (
quantitativeAccuracyValuerequired
quantitativeAccuracyMethodrequired
)
A quantitative assessment of the data quality expressed as a value and the method of its determination.

quantitativeAccuracyValue 

This element has no default value.
Content of this field: Description of this field:
Type: res:NonEmptyStringType
The value resulting from the accuracy test. Typically, this will be expressed in units corresponding to those declared for the parameter being assessed.
Example(s):
4.5

quantitativeAccuracyMethod 

This element has no default value.
Content of this field: Description of this field:
Type: res:NonEmptyStringType
Identification and explanation of the method used to calculate the quantitative accuracy assessment.
Example(s):
Error expressed as root mean square of 5 control points.

Attribute Definitions:

id

Type: res:IDType

Use: optional

system

Type: res:SystemType

Use: optional

scope

Type: res:ScopeType

Use: optional

Default value: document

Complex Type Definitions:

SpatialVectorType 
Content of this field: Description of this field:
Elements: Use: How many:
A choice of (
A sequence of (
ent:EntityGroup  
attributeListrequired
constraintoptionalunbounded
geometryrequiredunbounded
geometricObjectCountoptional
topologyLeveloptional
spatialReferenceoptional
horizontalAccuracyoptional
verticalAccuracyoptional
)
OR
res:ReferencesGroup  
)
Attributes: Use: Default Value:
idoptional
systemoptional
scopeoptionaldocument

DataQuality 
Content of this field: Description of this field:
Elements: Use: How many:
A sequence of (
accuracyReportrequired
quantitativeAccuracyReportoptionalunbounded
)

Simple Type Definitions:

GeometryType

Derived from: xs:string (by xs:restriction)

Allowed values:

  • Point
  • LineString
  • LinearRing
  • Polygon
  • MultiPoint
  • MultiLineString
  • MultiPolygon
  • MultiGeometry

TopologyLevel

Derived from: xs:string (by xs:restriction)

Allowed values:

  • geometryOnly
  • nonPlanarGraph
  • planarLineGraph
  • fullPlanarGraph
  • surfaceGraph
  • fullTopology3D

Group Definitions:

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